diff --git a/package.json b/package.json index ebcfbab..32a6693 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "connect-rtc-js", - "version": "1.0.0", + "version": "1.1.3", "description": "Amazon Connect softphone library", "license": "Amazon Software License", "main": "./src/js/connect-rtc.js", diff --git a/release/connect-rtc-debug.js b/release/connect-rtc-debug.js new file mode 100644 index 0000000..a08e725 --- /dev/null +++ b/release/connect-rtc-debug.js @@ -0,0 +1,9347 @@ +(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i Array#indexOf +// true -> Array#includes +var toIObject = require('./_to-iobject'); +var toLength = require('./_to-length'); +var toAbsoluteIndex = require('./_to-absolute-index'); +module.exports = function (IS_INCLUDES) { + return function ($this, el, fromIndex) { + var O = toIObject($this); + var length = toLength(O.length); + var index = toAbsoluteIndex(fromIndex, length); + var value; + // Array#includes uses SameValueZero equality algorithm + // eslint-disable-next-line no-self-compare + if (IS_INCLUDES && el != el) while (length > index) { + value = O[index++]; + // eslint-disable-next-line no-self-compare + if (value != value) return true; + // Array#indexOf ignores holes, Array#includes - not + } else for (;length > index; index++) if (IS_INCLUDES || index in O) { + if (O[index] === el) return IS_INCLUDES || index || 0; + } return !IS_INCLUDES && -1; + }; +}; + +},{"./_to-absolute-index":87,"./_to-iobject":89,"./_to-length":90}],30:[function(require,module,exports){ +// getting tag from 19.1.3.6 Object.prototype.toString() +var cof = require('./_cof'); +var TAG = require('./_wks')('toStringTag'); +// ES3 wrong here +var ARG = cof(function () { return arguments; }()) == 'Arguments'; + +// fallback for IE11 Script Access Denied error +var tryGet = function (it, key) { + try { + return it[key]; + } catch (e) { /* empty */ } +}; + +module.exports = function (it) { + var O, T, B; + return it === undefined ? 'Undefined' : it === null ? 'Null' + // @@toStringTag case + : typeof (T = tryGet(O = Object(it), TAG)) == 'string' ? T + // builtinTag case + : ARG ? cof(O) + // ES3 arguments fallback + : (B = cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B; +}; + +},{"./_cof":31,"./_wks":97}],31:[function(require,module,exports){ +var toString = {}.toString; + +module.exports = function (it) { + return toString.call(it).slice(8, -1); +}; + +},{}],32:[function(require,module,exports){ +var core = module.exports = { version: '2.6.2' }; +if (typeof __e == 'number') __e = core; // eslint-disable-line no-undef + +},{}],33:[function(require,module,exports){ +// optional / simple context binding +var aFunction = require('./_a-function'); +module.exports = function (fn, that, length) { + aFunction(fn); + if (that === undefined) return fn; + switch (length) { + case 1: return function (a) { + return fn.call(that, a); + }; + case 2: return function (a, b) { + return fn.call(that, a, b); + }; + case 3: return function (a, b, c) { + return fn.call(that, a, b, c); + }; + } + return function (/* ...args */) { + return fn.apply(that, arguments); + }; +}; + +},{"./_a-function":25}],34:[function(require,module,exports){ +// 7.2.1 RequireObjectCoercible(argument) +module.exports = function (it) { + if (it == undefined) throw TypeError("Can't call method on " + it); + return it; +}; + +},{}],35:[function(require,module,exports){ +// Thank's IE8 for his funny defineProperty +module.exports = !require('./_fails')(function () { + return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7; +}); + +},{"./_fails":40}],36:[function(require,module,exports){ +var isObject = require('./_is-object'); +var document = require('./_global').document; +// typeof document.createElement is 'object' in old IE +var is = isObject(document) && isObject(document.createElement); +module.exports = function (it) { + return is ? document.createElement(it) : {}; +}; + +},{"./_global":42,"./_is-object":51}],37:[function(require,module,exports){ +// IE 8- don't enum bug keys +module.exports = ( + 'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf' +).split(','); + +},{}],38:[function(require,module,exports){ +// all enumerable object keys, includes symbols +var getKeys = require('./_object-keys'); +var gOPS = require('./_object-gops'); +var pIE = require('./_object-pie'); +module.exports = function (it) { + var result = getKeys(it); + var getSymbols = gOPS.f; + if (getSymbols) { + var symbols = getSymbols(it); + var isEnum = pIE.f; + var i = 0; + var key; + while (symbols.length > i) if (isEnum.call(it, key = symbols[i++])) result.push(key); + } return result; +}; + +},{"./_object-gops":68,"./_object-keys":71,"./_object-pie":72}],39:[function(require,module,exports){ +var global = require('./_global'); +var core = require('./_core'); +var ctx = require('./_ctx'); +var hide = require('./_hide'); +var has = require('./_has'); +var PROTOTYPE = 'prototype'; + +var $export = function (type, name, source) { + var IS_FORCED = type & $export.F; + var IS_GLOBAL = type & $export.G; + var IS_STATIC = type & $export.S; + var IS_PROTO = type & $export.P; + var IS_BIND = type & $export.B; + var IS_WRAP = type & $export.W; + var exports = IS_GLOBAL ? core : core[name] || (core[name] = {}); + var expProto = exports[PROTOTYPE]; + var target = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE]; + var key, own, out; + if (IS_GLOBAL) source = name; + for (key in source) { + // contains in native + own = !IS_FORCED && target && target[key] !== undefined; + if (own && has(exports, key)) continue; + // export native or passed + out = own ? target[key] : source[key]; + // prevent global pollution for namespaces + exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key] + // bind timers to global for call from export context + : IS_BIND && own ? ctx(out, global) + // wrap global constructors for prevent change them in library + : IS_WRAP && target[key] == out ? (function (C) { + var F = function (a, b, c) { + if (this instanceof C) { + switch (arguments.length) { + case 0: return new C(); + case 1: return new C(a); + case 2: return new C(a, b); + } return new C(a, b, c); + } return C.apply(this, arguments); + }; + F[PROTOTYPE] = C[PROTOTYPE]; + return F; + // make static versions for prototype methods + })(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out; + // export proto methods to core.%CONSTRUCTOR%.methods.%NAME% + if (IS_PROTO) { + (exports.virtual || (exports.virtual = {}))[key] = out; + // export proto methods to core.%CONSTRUCTOR%.prototype.%NAME% + if (type & $export.R && expProto && !expProto[key]) hide(expProto, key, out); + } + } +}; +// type bitmap +$export.F = 1; // forced +$export.G = 2; // global +$export.S = 4; // static +$export.P = 8; // proto +$export.B = 16; // bind +$export.W = 32; // wrap +$export.U = 64; // safe +$export.R = 128; // real proto method for `library` +module.exports = $export; + +},{"./_core":32,"./_ctx":33,"./_global":42,"./_has":43,"./_hide":44}],40:[function(require,module,exports){ +module.exports = function (exec) { + try { + return !!exec(); + } catch (e) { + return true; + } +}; + +},{}],41:[function(require,module,exports){ +var ctx = require('./_ctx'); +var call = require('./_iter-call'); +var isArrayIter = require('./_is-array-iter'); +var anObject = require('./_an-object'); +var toLength = require('./_to-length'); +var getIterFn = require('./core.get-iterator-method'); +var BREAK = {}; +var RETURN = {}; +var exports = module.exports = function (iterable, entries, fn, that, ITERATOR) { + var iterFn = ITERATOR ? function () { return iterable; } : getIterFn(iterable); + var f = ctx(fn, that, entries ? 2 : 1); + var index = 0; + var length, step, iterator, result; + if (typeof iterFn != 'function') throw TypeError(iterable + ' is not iterable!'); + // fast case for arrays with default iterator + if (isArrayIter(iterFn)) for (length = toLength(iterable.length); length > index; index++) { + result = entries ? f(anObject(step = iterable[index])[0], step[1]) : f(iterable[index]); + if (result === BREAK || result === RETURN) return result; + } else for (iterator = iterFn.call(iterable); !(step = iterator.next()).done;) { + result = call(iterator, f, step.value, entries); + if (result === BREAK || result === RETURN) return result; + } +}; +exports.BREAK = BREAK; +exports.RETURN = RETURN; + +},{"./_an-object":28,"./_ctx":33,"./_is-array-iter":49,"./_iter-call":52,"./_to-length":90,"./core.get-iterator-method":98}],42:[function(require,module,exports){ +// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028 +var global = module.exports = typeof window != 'undefined' && window.Math == Math + ? window : typeof self != 'undefined' && self.Math == Math ? self + // eslint-disable-next-line no-new-func + : Function('return this')(); +if (typeof __g == 'number') __g = global; // eslint-disable-line no-undef + +},{}],43:[function(require,module,exports){ +var hasOwnProperty = {}.hasOwnProperty; +module.exports = function (it, key) { + return hasOwnProperty.call(it, key); +}; + +},{}],44:[function(require,module,exports){ +var dP = require('./_object-dp'); +var createDesc = require('./_property-desc'); +module.exports = require('./_descriptors') ? function (object, key, value) { + return dP.f(object, key, createDesc(1, value)); +} : function (object, key, value) { + object[key] = value; + return object; +}; + +},{"./_descriptors":35,"./_object-dp":63,"./_property-desc":76}],45:[function(require,module,exports){ +var document = require('./_global').document; +module.exports = document && document.documentElement; + +},{"./_global":42}],46:[function(require,module,exports){ +module.exports = !require('./_descriptors') && !require('./_fails')(function () { + return Object.defineProperty(require('./_dom-create')('div'), 'a', { get: function () { return 7; } }).a != 7; +}); + +},{"./_descriptors":35,"./_dom-create":36,"./_fails":40}],47:[function(require,module,exports){ +// fast apply, http://jsperf.lnkit.com/fast-apply/5 +module.exports = function (fn, args, that) { + var un = that === undefined; + switch (args.length) { + case 0: return un ? fn() + : fn.call(that); + case 1: return un ? fn(args[0]) + : fn.call(that, args[0]); + case 2: return un ? fn(args[0], args[1]) + : fn.call(that, args[0], args[1]); + case 3: return un ? fn(args[0], args[1], args[2]) + : fn.call(that, args[0], args[1], args[2]); + case 4: return un ? fn(args[0], args[1], args[2], args[3]) + : fn.call(that, args[0], args[1], args[2], args[3]); + } return fn.apply(that, args); +}; + +},{}],48:[function(require,module,exports){ +// fallback for non-array-like ES3 and non-enumerable old V8 strings +var cof = require('./_cof'); +// eslint-disable-next-line no-prototype-builtins +module.exports = Object('z').propertyIsEnumerable(0) ? Object : function (it) { + return cof(it) == 'String' ? it.split('') : Object(it); +}; + +},{"./_cof":31}],49:[function(require,module,exports){ +// check on default Array iterator +var Iterators = require('./_iterators'); +var ITERATOR = require('./_wks')('iterator'); +var ArrayProto = Array.prototype; + +module.exports = function (it) { + return it !== undefined && (Iterators.Array === it || ArrayProto[ITERATOR] === it); +}; + +},{"./_iterators":57,"./_wks":97}],50:[function(require,module,exports){ +// 7.2.2 IsArray(argument) +var cof = require('./_cof'); +module.exports = Array.isArray || function isArray(arg) { + return cof(arg) == 'Array'; +}; + +},{"./_cof":31}],51:[function(require,module,exports){ +module.exports = function (it) { + return typeof it === 'object' ? it !== null : typeof it === 'function'; +}; + +},{}],52:[function(require,module,exports){ +// call something on iterator step with safe closing on error +var anObject = require('./_an-object'); +module.exports = function (iterator, fn, value, entries) { + try { + return entries ? fn(anObject(value)[0], value[1]) : fn(value); + // 7.4.6 IteratorClose(iterator, completion) + } catch (e) { + var ret = iterator['return']; + if (ret !== undefined) anObject(ret.call(iterator)); + throw e; + } +}; + +},{"./_an-object":28}],53:[function(require,module,exports){ +'use strict'; +var create = require('./_object-create'); +var descriptor = require('./_property-desc'); +var setToStringTag = require('./_set-to-string-tag'); +var IteratorPrototype = {}; + +// 25.1.2.1.1 %IteratorPrototype%[@@iterator]() +require('./_hide')(IteratorPrototype, require('./_wks')('iterator'), function () { return this; }); + +module.exports = function (Constructor, NAME, next) { + Constructor.prototype = create(IteratorPrototype, { next: descriptor(1, next) }); + setToStringTag(Constructor, NAME + ' Iterator'); +}; + +},{"./_hide":44,"./_object-create":62,"./_property-desc":76,"./_set-to-string-tag":81,"./_wks":97}],54:[function(require,module,exports){ +'use strict'; +var LIBRARY = require('./_library'); +var $export = require('./_export'); +var redefine = require('./_redefine'); +var hide = require('./_hide'); +var Iterators = require('./_iterators'); +var $iterCreate = require('./_iter-create'); +var setToStringTag = require('./_set-to-string-tag'); +var getPrototypeOf = require('./_object-gpo'); +var ITERATOR = require('./_wks')('iterator'); +var BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next` +var FF_ITERATOR = '@@iterator'; +var KEYS = 'keys'; +var VALUES = 'values'; + +var returnThis = function () { return this; }; + +module.exports = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) { + $iterCreate(Constructor, NAME, next); + var getMethod = function (kind) { + if (!BUGGY && kind in proto) return proto[kind]; + switch (kind) { + case KEYS: return function keys() { return new Constructor(this, kind); }; + case VALUES: return function values() { return new Constructor(this, kind); }; + } return function entries() { return new Constructor(this, kind); }; + }; + var TAG = NAME + ' Iterator'; + var DEF_VALUES = DEFAULT == VALUES; + var VALUES_BUG = false; + var proto = Base.prototype; + var $native = proto[ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT]; + var $default = $native || getMethod(DEFAULT); + var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined; + var $anyNative = NAME == 'Array' ? proto.entries || $native : $native; + var methods, key, IteratorPrototype; + // Fix native + if ($anyNative) { + IteratorPrototype = getPrototypeOf($anyNative.call(new Base())); + if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) { + // Set @@toStringTag to native iterators + setToStringTag(IteratorPrototype, TAG, true); + // fix for some old engines + if (!LIBRARY && typeof IteratorPrototype[ITERATOR] != 'function') hide(IteratorPrototype, ITERATOR, returnThis); + } + } + // fix Array#{values, @@iterator}.name in V8 / FF + if (DEF_VALUES && $native && $native.name !== VALUES) { + VALUES_BUG = true; + $default = function values() { return $native.call(this); }; + } + // Define iterator + if ((!LIBRARY || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR])) { + hide(proto, ITERATOR, $default); + } + // Plug for library + Iterators[NAME] = $default; + Iterators[TAG] = returnThis; + if (DEFAULT) { + methods = { + values: DEF_VALUES ? $default : getMethod(VALUES), + keys: IS_SET ? $default : getMethod(KEYS), + entries: $entries + }; + if (FORCED) for (key in methods) { + if (!(key in proto)) redefine(proto, key, methods[key]); + } else $export($export.P + $export.F * (BUGGY || VALUES_BUG), NAME, methods); + } + return methods; +}; + +},{"./_export":39,"./_hide":44,"./_iter-create":53,"./_iterators":57,"./_library":58,"./_object-gpo":69,"./_redefine":78,"./_set-to-string-tag":81,"./_wks":97}],55:[function(require,module,exports){ +var ITERATOR = require('./_wks')('iterator'); +var SAFE_CLOSING = false; + +try { + var riter = [7][ITERATOR](); + riter['return'] = function () { SAFE_CLOSING = true; }; + // eslint-disable-next-line no-throw-literal + Array.from(riter, function () { throw 2; }); +} catch (e) { /* empty */ } + +module.exports = function (exec, skipClosing) { + if (!skipClosing && !SAFE_CLOSING) return false; + var safe = false; + try { + var arr = [7]; + var iter = arr[ITERATOR](); + iter.next = function () { return { done: safe = true }; }; + arr[ITERATOR] = function () { return iter; }; + exec(arr); + } catch (e) { /* empty */ } + return safe; +}; + +},{"./_wks":97}],56:[function(require,module,exports){ +module.exports = function (done, value) { + return { value: value, done: !!done }; +}; + +},{}],57:[function(require,module,exports){ +module.exports = {}; + +},{}],58:[function(require,module,exports){ +module.exports = true; + +},{}],59:[function(require,module,exports){ +var META = require('./_uid')('meta'); +var isObject = require('./_is-object'); +var has = require('./_has'); +var setDesc = require('./_object-dp').f; +var id = 0; +var isExtensible = Object.isExtensible || function () { + return true; +}; +var FREEZE = !require('./_fails')(function () { + return isExtensible(Object.preventExtensions({})); +}); +var setMeta = function (it) { + setDesc(it, META, { value: { + i: 'O' + ++id, // object ID + w: {} // weak collections IDs + } }); +}; +var fastKey = function (it, create) { + // return primitive with prefix + if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it; + if (!has(it, META)) { + // can't set metadata to uncaught frozen object + if (!isExtensible(it)) return 'F'; + // not necessary to add metadata + if (!create) return 'E'; + // add missing metadata + setMeta(it); + // return object ID + } return it[META].i; +}; +var getWeak = function (it, create) { + if (!has(it, META)) { + // can't set metadata to uncaught frozen object + if (!isExtensible(it)) return true; + // not necessary to add metadata + if (!create) return false; + // add missing metadata + setMeta(it); + // return hash weak collections IDs + } return it[META].w; +}; +// add metadata on freeze-family methods calling +var onFreeze = function (it) { + if (FREEZE && meta.NEED && isExtensible(it) && !has(it, META)) setMeta(it); + return it; +}; +var meta = module.exports = { + KEY: META, + NEED: false, + fastKey: fastKey, + getWeak: getWeak, + onFreeze: onFreeze +}; + +},{"./_fails":40,"./_has":43,"./_is-object":51,"./_object-dp":63,"./_uid":93}],60:[function(require,module,exports){ +var global = require('./_global'); +var macrotask = require('./_task').set; +var Observer = global.MutationObserver || global.WebKitMutationObserver; +var process = global.process; +var Promise = global.Promise; +var isNode = require('./_cof')(process) == 'process'; + +module.exports = function () { + var head, last, notify; + + var flush = function () { + var parent, fn; + if (isNode && (parent = process.domain)) parent.exit(); + while (head) { + fn = head.fn; + head = head.next; + try { + fn(); + } catch (e) { + if (head) notify(); + else last = undefined; + throw e; + } + } last = undefined; + if (parent) parent.enter(); + }; + + // Node.js + if (isNode) { + notify = function () { + process.nextTick(flush); + }; + // browsers with MutationObserver, except iOS Safari - https://github.com/zloirock/core-js/issues/339 + } else if (Observer && !(global.navigator && global.navigator.standalone)) { + var toggle = true; + var node = document.createTextNode(''); + new Observer(flush).observe(node, { characterData: true }); // eslint-disable-line no-new + notify = function () { + node.data = toggle = !toggle; + }; + // environments with maybe non-completely correct, but existent Promise + } else if (Promise && Promise.resolve) { + // Promise.resolve without an argument throws an error in LG WebOS 2 + var promise = Promise.resolve(undefined); + notify = function () { + promise.then(flush); + }; + // for other environments - macrotask based on: + // - setImmediate + // - MessageChannel + // - window.postMessag + // - onreadystatechange + // - setTimeout + } else { + notify = function () { + // strange IE + webpack dev server bug - use .call(global) + macrotask.call(global, flush); + }; + } + + return function (fn) { + var task = { fn: fn, next: undefined }; + if (last) last.next = task; + if (!head) { + head = task; + notify(); + } last = task; + }; +}; + +},{"./_cof":31,"./_global":42,"./_task":86}],61:[function(require,module,exports){ +'use strict'; +// 25.4.1.5 NewPromiseCapability(C) +var aFunction = require('./_a-function'); + +function PromiseCapability(C) { + var resolve, reject; + this.promise = new C(function ($$resolve, $$reject) { + if (resolve !== undefined || reject !== undefined) throw TypeError('Bad Promise constructor'); + resolve = $$resolve; + reject = $$reject; + }); + this.resolve = aFunction(resolve); + this.reject = aFunction(reject); +} + +module.exports.f = function (C) { + return new PromiseCapability(C); +}; + +},{"./_a-function":25}],62:[function(require,module,exports){ +// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties]) +var anObject = require('./_an-object'); +var dPs = require('./_object-dps'); +var enumBugKeys = require('./_enum-bug-keys'); +var IE_PROTO = require('./_shared-key')('IE_PROTO'); +var Empty = function () { /* empty */ }; +var PROTOTYPE = 'prototype'; + +// Create object with fake `null` prototype: use iframe Object with cleared prototype +var createDict = function () { + // Thrash, waste and sodomy: IE GC bug + var iframe = require('./_dom-create')('iframe'); + var i = enumBugKeys.length; + var lt = '<'; + var gt = '>'; + var iframeDocument; + iframe.style.display = 'none'; + require('./_html').appendChild(iframe); + iframe.src = 'javascript:'; // eslint-disable-line no-script-url + // createDict = iframe.contentWindow.Object; + // html.removeChild(iframe); + iframeDocument = iframe.contentWindow.document; + iframeDocument.open(); + iframeDocument.write(lt + 'script' + gt + 'document.F=Object' + lt + '/script' + gt); + iframeDocument.close(); + createDict = iframeDocument.F; + while (i--) delete createDict[PROTOTYPE][enumBugKeys[i]]; + return createDict(); +}; + +module.exports = Object.create || function create(O, Properties) { + var result; + if (O !== null) { + Empty[PROTOTYPE] = anObject(O); + result = new Empty(); + Empty[PROTOTYPE] = null; + // add "__proto__" for Object.getPrototypeOf polyfill + result[IE_PROTO] = O; + } else result = createDict(); + return Properties === undefined ? result : dPs(result, Properties); +}; + +},{"./_an-object":28,"./_dom-create":36,"./_enum-bug-keys":37,"./_html":45,"./_object-dps":64,"./_shared-key":82}],63:[function(require,module,exports){ +var anObject = require('./_an-object'); +var IE8_DOM_DEFINE = require('./_ie8-dom-define'); +var toPrimitive = require('./_to-primitive'); +var dP = Object.defineProperty; + +exports.f = require('./_descriptors') ? Object.defineProperty : function defineProperty(O, P, Attributes) { + anObject(O); + P = toPrimitive(P, true); + anObject(Attributes); + if (IE8_DOM_DEFINE) try { + return dP(O, P, Attributes); + } catch (e) { /* empty */ } + if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!'); + if ('value' in Attributes) O[P] = Attributes.value; + return O; +}; + +},{"./_an-object":28,"./_descriptors":35,"./_ie8-dom-define":46,"./_to-primitive":92}],64:[function(require,module,exports){ +var dP = require('./_object-dp'); +var anObject = require('./_an-object'); +var getKeys = require('./_object-keys'); + +module.exports = require('./_descriptors') ? Object.defineProperties : function defineProperties(O, Properties) { + anObject(O); + var keys = getKeys(Properties); + var length = keys.length; + var i = 0; + var P; + while (length > i) dP.f(O, P = keys[i++], Properties[P]); + return O; +}; + +},{"./_an-object":28,"./_descriptors":35,"./_object-dp":63,"./_object-keys":71}],65:[function(require,module,exports){ +var pIE = require('./_object-pie'); +var createDesc = require('./_property-desc'); +var toIObject = require('./_to-iobject'); +var toPrimitive = require('./_to-primitive'); +var has = require('./_has'); +var IE8_DOM_DEFINE = require('./_ie8-dom-define'); +var gOPD = Object.getOwnPropertyDescriptor; + +exports.f = require('./_descriptors') ? gOPD : function getOwnPropertyDescriptor(O, P) { + O = toIObject(O); + P = toPrimitive(P, true); + if (IE8_DOM_DEFINE) try { + return gOPD(O, P); + } catch (e) { /* empty */ } + if (has(O, P)) return createDesc(!pIE.f.call(O, P), O[P]); +}; + +},{"./_descriptors":35,"./_has":43,"./_ie8-dom-define":46,"./_object-pie":72,"./_property-desc":76,"./_to-iobject":89,"./_to-primitive":92}],66:[function(require,module,exports){ +// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window +var toIObject = require('./_to-iobject'); +var gOPN = require('./_object-gopn').f; +var toString = {}.toString; + +var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames + ? Object.getOwnPropertyNames(window) : []; + +var getWindowNames = function (it) { + try { + return gOPN(it); + } catch (e) { + return windowNames.slice(); + } +}; + +module.exports.f = function getOwnPropertyNames(it) { + return windowNames && toString.call(it) == '[object Window]' ? getWindowNames(it) : gOPN(toIObject(it)); +}; + +},{"./_object-gopn":67,"./_to-iobject":89}],67:[function(require,module,exports){ +// 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O) +var $keys = require('./_object-keys-internal'); +var hiddenKeys = require('./_enum-bug-keys').concat('length', 'prototype'); + +exports.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) { + return $keys(O, hiddenKeys); +}; + +},{"./_enum-bug-keys":37,"./_object-keys-internal":70}],68:[function(require,module,exports){ +exports.f = Object.getOwnPropertySymbols; + +},{}],69:[function(require,module,exports){ +// 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O) +var has = require('./_has'); +var toObject = require('./_to-object'); +var IE_PROTO = require('./_shared-key')('IE_PROTO'); +var ObjectProto = Object.prototype; + +module.exports = Object.getPrototypeOf || function (O) { + O = toObject(O); + if (has(O, IE_PROTO)) return O[IE_PROTO]; + if (typeof O.constructor == 'function' && O instanceof O.constructor) { + return O.constructor.prototype; + } return O instanceof Object ? ObjectProto : null; +}; + +},{"./_has":43,"./_shared-key":82,"./_to-object":91}],70:[function(require,module,exports){ +var has = require('./_has'); +var toIObject = require('./_to-iobject'); +var arrayIndexOf = require('./_array-includes')(false); +var IE_PROTO = require('./_shared-key')('IE_PROTO'); + +module.exports = function (object, names) { + var O = toIObject(object); + var i = 0; + var result = []; + var key; + for (key in O) if (key != IE_PROTO) has(O, key) && result.push(key); + // Don't enum bug & hidden keys + while (names.length > i) if (has(O, key = names[i++])) { + ~arrayIndexOf(result, key) || result.push(key); + } + return result; +}; + +},{"./_array-includes":29,"./_has":43,"./_shared-key":82,"./_to-iobject":89}],71:[function(require,module,exports){ +// 19.1.2.14 / 15.2.3.14 Object.keys(O) +var $keys = require('./_object-keys-internal'); +var enumBugKeys = require('./_enum-bug-keys'); + +module.exports = Object.keys || function keys(O) { + return $keys(O, enumBugKeys); +}; + +},{"./_enum-bug-keys":37,"./_object-keys-internal":70}],72:[function(require,module,exports){ +exports.f = {}.propertyIsEnumerable; + +},{}],73:[function(require,module,exports){ +// most Object methods by ES6 should accept primitives +var $export = require('./_export'); +var core = require('./_core'); +var fails = require('./_fails'); +module.exports = function (KEY, exec) { + var fn = (core.Object || {})[KEY] || Object[KEY]; + var exp = {}; + exp[KEY] = exec(fn); + $export($export.S + $export.F * fails(function () { fn(1); }), 'Object', exp); +}; + +},{"./_core":32,"./_export":39,"./_fails":40}],74:[function(require,module,exports){ +module.exports = function (exec) { + try { + return { e: false, v: exec() }; + } catch (e) { + return { e: true, v: e }; + } +}; + +},{}],75:[function(require,module,exports){ +var anObject = require('./_an-object'); +var isObject = require('./_is-object'); +var newPromiseCapability = require('./_new-promise-capability'); + +module.exports = function (C, x) { + anObject(C); + if (isObject(x) && x.constructor === C) return x; + var promiseCapability = newPromiseCapability.f(C); + var resolve = promiseCapability.resolve; + resolve(x); + return promiseCapability.promise; +}; + +},{"./_an-object":28,"./_is-object":51,"./_new-promise-capability":61}],76:[function(require,module,exports){ +module.exports = function (bitmap, value) { + return { + enumerable: !(bitmap & 1), + configurable: !(bitmap & 2), + writable: !(bitmap & 4), + value: value + }; +}; + +},{}],77:[function(require,module,exports){ +var hide = require('./_hide'); +module.exports = function (target, src, safe) { + for (var key in src) { + if (safe && target[key]) target[key] = src[key]; + else hide(target, key, src[key]); + } return target; +}; + +},{"./_hide":44}],78:[function(require,module,exports){ +module.exports = require('./_hide'); + +},{"./_hide":44}],79:[function(require,module,exports){ +// Works with __proto__ only. Old v8 can't work with null proto objects. +/* eslint-disable no-proto */ +var isObject = require('./_is-object'); +var anObject = require('./_an-object'); +var check = function (O, proto) { + anObject(O); + if (!isObject(proto) && proto !== null) throw TypeError(proto + ": can't set as prototype!"); +}; +module.exports = { + set: Object.setPrototypeOf || ('__proto__' in {} ? // eslint-disable-line + function (test, buggy, set) { + try { + set = require('./_ctx')(Function.call, require('./_object-gopd').f(Object.prototype, '__proto__').set, 2); + set(test, []); + buggy = !(test instanceof Array); + } catch (e) { buggy = true; } + return function setPrototypeOf(O, proto) { + check(O, proto); + if (buggy) O.__proto__ = proto; + else set(O, proto); + return O; + }; + }({}, false) : undefined), + check: check +}; + +},{"./_an-object":28,"./_ctx":33,"./_is-object":51,"./_object-gopd":65}],80:[function(require,module,exports){ +'use strict'; +var global = require('./_global'); +var core = require('./_core'); +var dP = require('./_object-dp'); +var DESCRIPTORS = require('./_descriptors'); +var SPECIES = require('./_wks')('species'); + +module.exports = function (KEY) { + var C = typeof core[KEY] == 'function' ? core[KEY] : global[KEY]; + if (DESCRIPTORS && C && !C[SPECIES]) dP.f(C, SPECIES, { + configurable: true, + get: function () { return this; } + }); +}; + +},{"./_core":32,"./_descriptors":35,"./_global":42,"./_object-dp":63,"./_wks":97}],81:[function(require,module,exports){ +var def = require('./_object-dp').f; +var has = require('./_has'); +var TAG = require('./_wks')('toStringTag'); + +module.exports = function (it, tag, stat) { + if (it && !has(it = stat ? it : it.prototype, TAG)) def(it, TAG, { configurable: true, value: tag }); +}; + +},{"./_has":43,"./_object-dp":63,"./_wks":97}],82:[function(require,module,exports){ +var shared = require('./_shared')('keys'); +var uid = require('./_uid'); +module.exports = function (key) { + return shared[key] || (shared[key] = uid(key)); +}; + +},{"./_shared":83,"./_uid":93}],83:[function(require,module,exports){ +var core = require('./_core'); +var global = require('./_global'); +var SHARED = '__core-js_shared__'; +var store = global[SHARED] || (global[SHARED] = {}); + +(module.exports = function (key, value) { + return store[key] || (store[key] = value !== undefined ? value : {}); +})('versions', []).push({ + version: core.version, + mode: require('./_library') ? 'pure' : 'global', + copyright: '© 2019 Denis Pushkarev (zloirock.ru)' +}); + +},{"./_core":32,"./_global":42,"./_library":58}],84:[function(require,module,exports){ +// 7.3.20 SpeciesConstructor(O, defaultConstructor) +var anObject = require('./_an-object'); +var aFunction = require('./_a-function'); +var SPECIES = require('./_wks')('species'); +module.exports = function (O, D) { + var C = anObject(O).constructor; + var S; + return C === undefined || (S = anObject(C)[SPECIES]) == undefined ? D : aFunction(S); +}; + +},{"./_a-function":25,"./_an-object":28,"./_wks":97}],85:[function(require,module,exports){ +var toInteger = require('./_to-integer'); +var defined = require('./_defined'); +// true -> String#at +// false -> String#codePointAt +module.exports = function (TO_STRING) { + return function (that, pos) { + var s = String(defined(that)); + var i = toInteger(pos); + var l = s.length; + var a, b; + if (i < 0 || i >= l) return TO_STRING ? '' : undefined; + a = s.charCodeAt(i); + return a < 0xd800 || a > 0xdbff || i + 1 === l || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff + ? TO_STRING ? s.charAt(i) : a + : TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000; + }; +}; + +},{"./_defined":34,"./_to-integer":88}],86:[function(require,module,exports){ +var ctx = require('./_ctx'); +var invoke = require('./_invoke'); +var html = require('./_html'); +var cel = require('./_dom-create'); +var global = require('./_global'); +var process = global.process; +var setTask = global.setImmediate; +var clearTask = global.clearImmediate; +var MessageChannel = global.MessageChannel; +var Dispatch = global.Dispatch; +var counter = 0; +var queue = {}; +var ONREADYSTATECHANGE = 'onreadystatechange'; +var defer, channel, port; +var run = function () { + var id = +this; + // eslint-disable-next-line no-prototype-builtins + if (queue.hasOwnProperty(id)) { + var fn = queue[id]; + delete queue[id]; + fn(); + } +}; +var listener = function (event) { + run.call(event.data); +}; +// Node.js 0.9+ & IE10+ has setImmediate, otherwise: +if (!setTask || !clearTask) { + setTask = function setImmediate(fn) { + var args = []; + var i = 1; + while (arguments.length > i) args.push(arguments[i++]); + queue[++counter] = function () { + // eslint-disable-next-line no-new-func + invoke(typeof fn == 'function' ? fn : Function(fn), args); + }; + defer(counter); + return counter; + }; + clearTask = function clearImmediate(id) { + delete queue[id]; + }; + // Node.js 0.8- + if (require('./_cof')(process) == 'process') { + defer = function (id) { + process.nextTick(ctx(run, id, 1)); + }; + // Sphere (JS game engine) Dispatch API + } else if (Dispatch && Dispatch.now) { + defer = function (id) { + Dispatch.now(ctx(run, id, 1)); + }; + // Browsers with MessageChannel, includes WebWorkers + } else if (MessageChannel) { + channel = new MessageChannel(); + port = channel.port2; + channel.port1.onmessage = listener; + defer = ctx(port.postMessage, port, 1); + // Browsers with postMessage, skip WebWorkers + // IE8 has postMessage, but it's sync & typeof its postMessage is 'object' + } else if (global.addEventListener && typeof postMessage == 'function' && !global.importScripts) { + defer = function (id) { + global.postMessage(id + '', '*'); + }; + global.addEventListener('message', listener, false); + // IE8- + } else if (ONREADYSTATECHANGE in cel('script')) { + defer = function (id) { + html.appendChild(cel('script'))[ONREADYSTATECHANGE] = function () { + html.removeChild(this); + run.call(id); + }; + }; + // Rest old browsers + } else { + defer = function (id) { + setTimeout(ctx(run, id, 1), 0); + }; + } +} +module.exports = { + set: setTask, + clear: clearTask +}; + +},{"./_cof":31,"./_ctx":33,"./_dom-create":36,"./_global":42,"./_html":45,"./_invoke":47}],87:[function(require,module,exports){ +var toInteger = require('./_to-integer'); +var max = Math.max; +var min = Math.min; +module.exports = function (index, length) { + index = toInteger(index); + return index < 0 ? max(index + length, 0) : min(index, length); +}; + +},{"./_to-integer":88}],88:[function(require,module,exports){ +// 7.1.4 ToInteger +var ceil = Math.ceil; +var floor = Math.floor; +module.exports = function (it) { + return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it); +}; + +},{}],89:[function(require,module,exports){ +// to indexed object, toObject with fallback for non-array-like ES3 strings +var IObject = require('./_iobject'); +var defined = require('./_defined'); +module.exports = function (it) { + return IObject(defined(it)); +}; + +},{"./_defined":34,"./_iobject":48}],90:[function(require,module,exports){ +// 7.1.15 ToLength +var toInteger = require('./_to-integer'); +var min = Math.min; +module.exports = function (it) { + return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991 +}; + +},{"./_to-integer":88}],91:[function(require,module,exports){ +// 7.1.13 ToObject(argument) +var defined = require('./_defined'); +module.exports = function (it) { + return Object(defined(it)); +}; + +},{"./_defined":34}],92:[function(require,module,exports){ +// 7.1.1 ToPrimitive(input [, PreferredType]) +var isObject = require('./_is-object'); +// instead of the ES6 spec version, we didn't implement @@toPrimitive case +// and the second argument - flag - preferred type is a string +module.exports = function (it, S) { + if (!isObject(it)) return it; + var fn, val; + if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val; + if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val; + if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val; + throw TypeError("Can't convert object to primitive value"); +}; + +},{"./_is-object":51}],93:[function(require,module,exports){ +var id = 0; +var px = Math.random(); +module.exports = function (key) { + return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36)); +}; + +},{}],94:[function(require,module,exports){ +var global = require('./_global'); +var navigator = global.navigator; + +module.exports = navigator && navigator.userAgent || ''; + +},{"./_global":42}],95:[function(require,module,exports){ +var global = require('./_global'); +var core = require('./_core'); +var LIBRARY = require('./_library'); +var wksExt = require('./_wks-ext'); +var defineProperty = require('./_object-dp').f; +module.exports = function (name) { + var $Symbol = core.Symbol || (core.Symbol = LIBRARY ? {} : global.Symbol || {}); + if (name.charAt(0) != '_' && !(name in $Symbol)) defineProperty($Symbol, name, { value: wksExt.f(name) }); +}; + +},{"./_core":32,"./_global":42,"./_library":58,"./_object-dp":63,"./_wks-ext":96}],96:[function(require,module,exports){ +exports.f = require('./_wks'); + +},{"./_wks":97}],97:[function(require,module,exports){ +var store = require('./_shared')('wks'); +var uid = require('./_uid'); +var Symbol = require('./_global').Symbol; +var USE_SYMBOL = typeof Symbol == 'function'; + +var $exports = module.exports = function (name) { + return store[name] || (store[name] = + USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name)); +}; + +$exports.store = store; + +},{"./_global":42,"./_shared":83,"./_uid":93}],98:[function(require,module,exports){ +var classof = require('./_classof'); +var ITERATOR = require('./_wks')('iterator'); +var Iterators = require('./_iterators'); +module.exports = require('./_core').getIteratorMethod = function (it) { + if (it != undefined) return it[ITERATOR] + || it['@@iterator'] + || Iterators[classof(it)]; +}; + +},{"./_classof":30,"./_core":32,"./_iterators":57,"./_wks":97}],99:[function(require,module,exports){ +'use strict'; +var addToUnscopables = require('./_add-to-unscopables'); +var step = require('./_iter-step'); +var Iterators = require('./_iterators'); +var toIObject = require('./_to-iobject'); + +// 22.1.3.4 Array.prototype.entries() +// 22.1.3.13 Array.prototype.keys() +// 22.1.3.29 Array.prototype.values() +// 22.1.3.30 Array.prototype[@@iterator]() +module.exports = require('./_iter-define')(Array, 'Array', function (iterated, kind) { + this._t = toIObject(iterated); // target + this._i = 0; // next index + this._k = kind; // kind +// 22.1.5.2.1 %ArrayIteratorPrototype%.next() +}, function () { + var O = this._t; + var kind = this._k; + var index = this._i++; + if (!O || index >= O.length) { + this._t = undefined; + return step(1); + } + if (kind == 'keys') return step(0, index); + if (kind == 'values') return step(0, O[index]); + return step(0, [index, O[index]]); +}, 'values'); + +// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7) +Iterators.Arguments = Iterators.Array; + +addToUnscopables('keys'); +addToUnscopables('values'); +addToUnscopables('entries'); + +},{"./_add-to-unscopables":26,"./_iter-define":54,"./_iter-step":56,"./_iterators":57,"./_to-iobject":89}],100:[function(require,module,exports){ +var $export = require('./_export'); +// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties]) +$export($export.S, 'Object', { create: require('./_object-create') }); + +},{"./_export":39,"./_object-create":62}],101:[function(require,module,exports){ +var $export = require('./_export'); +// 19.1.2.4 / 15.2.3.6 Object.defineProperty(O, P, Attributes) +$export($export.S + $export.F * !require('./_descriptors'), 'Object', { defineProperty: require('./_object-dp').f }); + +},{"./_descriptors":35,"./_export":39,"./_object-dp":63}],102:[function(require,module,exports){ +// 19.1.2.6 Object.getOwnPropertyDescriptor(O, P) +var toIObject = require('./_to-iobject'); +var $getOwnPropertyDescriptor = require('./_object-gopd').f; + +require('./_object-sap')('getOwnPropertyDescriptor', function () { + return function getOwnPropertyDescriptor(it, key) { + return $getOwnPropertyDescriptor(toIObject(it), key); + }; +}); + +},{"./_object-gopd":65,"./_object-sap":73,"./_to-iobject":89}],103:[function(require,module,exports){ +// 19.1.2.9 Object.getPrototypeOf(O) +var toObject = require('./_to-object'); +var $getPrototypeOf = require('./_object-gpo'); + +require('./_object-sap')('getPrototypeOf', function () { + return function getPrototypeOf(it) { + return $getPrototypeOf(toObject(it)); + }; +}); + +},{"./_object-gpo":69,"./_object-sap":73,"./_to-object":91}],104:[function(require,module,exports){ +// 19.1.3.19 Object.setPrototypeOf(O, proto) +var $export = require('./_export'); +$export($export.S, 'Object', { setPrototypeOf: require('./_set-proto').set }); + +},{"./_export":39,"./_set-proto":79}],105:[function(require,module,exports){ + +},{}],106:[function(require,module,exports){ +'use strict'; +var LIBRARY = require('./_library'); +var global = require('./_global'); +var ctx = require('./_ctx'); +var classof = require('./_classof'); +var $export = require('./_export'); +var isObject = require('./_is-object'); +var aFunction = require('./_a-function'); +var anInstance = require('./_an-instance'); +var forOf = require('./_for-of'); +var speciesConstructor = require('./_species-constructor'); +var task = require('./_task').set; +var microtask = require('./_microtask')(); +var newPromiseCapabilityModule = require('./_new-promise-capability'); +var perform = require('./_perform'); +var userAgent = require('./_user-agent'); +var promiseResolve = require('./_promise-resolve'); +var PROMISE = 'Promise'; +var TypeError = global.TypeError; +var process = global.process; +var versions = process && process.versions; +var v8 = versions && versions.v8 || ''; +var $Promise = global[PROMISE]; +var isNode = classof(process) == 'process'; +var empty = function () { /* empty */ }; +var Internal, newGenericPromiseCapability, OwnPromiseCapability, Wrapper; +var newPromiseCapability = newGenericPromiseCapability = newPromiseCapabilityModule.f; + +var USE_NATIVE = !!function () { + try { + // correct subclassing with @@species support + var promise = $Promise.resolve(1); + var FakePromise = (promise.constructor = {})[require('./_wks')('species')] = function (exec) { + exec(empty, empty); + }; + // unhandled rejections tracking support, NodeJS Promise without it fails @@species test + return (isNode || typeof PromiseRejectionEvent == 'function') + && promise.then(empty) instanceof FakePromise + // v8 6.6 (Node 10 and Chrome 66) have a bug with resolving custom thenables + // https://bugs.chromium.org/p/chromium/issues/detail?id=830565 + // we can't detect it synchronously, so just check versions + && v8.indexOf('6.6') !== 0 + && userAgent.indexOf('Chrome/66') === -1; + } catch (e) { /* empty */ } +}(); + +// helpers +var isThenable = function (it) { + var then; + return isObject(it) && typeof (then = it.then) == 'function' ? then : false; +}; +var notify = function (promise, isReject) { + if (promise._n) return; + promise._n = true; + var chain = promise._c; + microtask(function () { + var value = promise._v; + var ok = promise._s == 1; + var i = 0; + var run = function (reaction) { + var handler = ok ? reaction.ok : reaction.fail; + var resolve = reaction.resolve; + var reject = reaction.reject; + var domain = reaction.domain; + var result, then, exited; + try { + if (handler) { + if (!ok) { + if (promise._h == 2) onHandleUnhandled(promise); + promise._h = 1; + } + if (handler === true) result = value; + else { + if (domain) domain.enter(); + result = handler(value); // may throw + if (domain) { + domain.exit(); + exited = true; + } + } + if (result === reaction.promise) { + reject(TypeError('Promise-chain cycle')); + } else if (then = isThenable(result)) { + then.call(result, resolve, reject); + } else resolve(result); + } else reject(value); + } catch (e) { + if (domain && !exited) domain.exit(); + reject(e); + } + }; + while (chain.length > i) run(chain[i++]); // variable length - can't use forEach + promise._c = []; + promise._n = false; + if (isReject && !promise._h) onUnhandled(promise); + }); +}; +var onUnhandled = function (promise) { + task.call(global, function () { + var value = promise._v; + var unhandled = isUnhandled(promise); + var result, handler, console; + if (unhandled) { + result = perform(function () { + if (isNode) { + process.emit('unhandledRejection', value, promise); + } else if (handler = global.onunhandledrejection) { + handler({ promise: promise, reason: value }); + } else if ((console = global.console) && console.error) { + console.error('Unhandled promise rejection', value); + } + }); + // Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should + promise._h = isNode || isUnhandled(promise) ? 2 : 1; + } promise._a = undefined; + if (unhandled && result.e) throw result.v; + }); +}; +var isUnhandled = function (promise) { + return promise._h !== 1 && (promise._a || promise._c).length === 0; +}; +var onHandleUnhandled = function (promise) { + task.call(global, function () { + var handler; + if (isNode) { + process.emit('rejectionHandled', promise); + } else if (handler = global.onrejectionhandled) { + handler({ promise: promise, reason: promise._v }); + } + }); +}; +var $reject = function (value) { + var promise = this; + if (promise._d) return; + promise._d = true; + promise = promise._w || promise; // unwrap + promise._v = value; + promise._s = 2; + if (!promise._a) promise._a = promise._c.slice(); + notify(promise, true); +}; +var $resolve = function (value) { + var promise = this; + var then; + if (promise._d) return; + promise._d = true; + promise = promise._w || promise; // unwrap + try { + if (promise === value) throw TypeError("Promise can't be resolved itself"); + if (then = isThenable(value)) { + microtask(function () { + var wrapper = { _w: promise, _d: false }; // wrap + try { + then.call(value, ctx($resolve, wrapper, 1), ctx($reject, wrapper, 1)); + } catch (e) { + $reject.call(wrapper, e); + } + }); + } else { + promise._v = value; + promise._s = 1; + notify(promise, false); + } + } catch (e) { + $reject.call({ _w: promise, _d: false }, e); // wrap + } +}; + +// constructor polyfill +if (!USE_NATIVE) { + // 25.4.3.1 Promise(executor) + $Promise = function Promise(executor) { + anInstance(this, $Promise, PROMISE, '_h'); + aFunction(executor); + Internal.call(this); + try { + executor(ctx($resolve, this, 1), ctx($reject, this, 1)); + } catch (err) { + $reject.call(this, err); + } + }; + // eslint-disable-next-line no-unused-vars + Internal = function Promise(executor) { + this._c = []; // <- awaiting reactions + this._a = undefined; // <- checked in isUnhandled reactions + this._s = 0; // <- state + this._d = false; // <- done + this._v = undefined; // <- value + this._h = 0; // <- rejection state, 0 - default, 1 - handled, 2 - unhandled + this._n = false; // <- notify + }; + Internal.prototype = require('./_redefine-all')($Promise.prototype, { + // 25.4.5.3 Promise.prototype.then(onFulfilled, onRejected) + then: function then(onFulfilled, onRejected) { + var reaction = newPromiseCapability(speciesConstructor(this, $Promise)); + reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true; + reaction.fail = typeof onRejected == 'function' && onRejected; + reaction.domain = isNode ? process.domain : undefined; + this._c.push(reaction); + if (this._a) this._a.push(reaction); + if (this._s) notify(this, false); + return reaction.promise; + }, + // 25.4.5.1 Promise.prototype.catch(onRejected) + 'catch': function (onRejected) { + return this.then(undefined, onRejected); + } + }); + OwnPromiseCapability = function () { + var promise = new Internal(); + this.promise = promise; + this.resolve = ctx($resolve, promise, 1); + this.reject = ctx($reject, promise, 1); + }; + newPromiseCapabilityModule.f = newPromiseCapability = function (C) { + return C === $Promise || C === Wrapper + ? new OwnPromiseCapability(C) + : newGenericPromiseCapability(C); + }; +} + +$export($export.G + $export.W + $export.F * !USE_NATIVE, { Promise: $Promise }); +require('./_set-to-string-tag')($Promise, PROMISE); +require('./_set-species')(PROMISE); +Wrapper = require('./_core')[PROMISE]; + +// statics +$export($export.S + $export.F * !USE_NATIVE, PROMISE, { + // 25.4.4.5 Promise.reject(r) + reject: function reject(r) { + var capability = newPromiseCapability(this); + var $$reject = capability.reject; + $$reject(r); + return capability.promise; + } +}); +$export($export.S + $export.F * (LIBRARY || !USE_NATIVE), PROMISE, { + // 25.4.4.6 Promise.resolve(x) + resolve: function resolve(x) { + return promiseResolve(LIBRARY && this === Wrapper ? $Promise : this, x); + } +}); +$export($export.S + $export.F * !(USE_NATIVE && require('./_iter-detect')(function (iter) { + $Promise.all(iter)['catch'](empty); +})), PROMISE, { + // 25.4.4.1 Promise.all(iterable) + all: function all(iterable) { + var C = this; + var capability = newPromiseCapability(C); + var resolve = capability.resolve; + var reject = capability.reject; + var result = perform(function () { + var values = []; + var index = 0; + var remaining = 1; + forOf(iterable, false, function (promise) { + var $index = index++; + var alreadyCalled = false; + values.push(undefined); + remaining++; + C.resolve(promise).then(function (value) { + if (alreadyCalled) return; + alreadyCalled = true; + values[$index] = value; + --remaining || resolve(values); + }, reject); + }); + --remaining || resolve(values); + }); + if (result.e) reject(result.v); + return capability.promise; + }, + // 25.4.4.4 Promise.race(iterable) + race: function race(iterable) { + var C = this; + var capability = newPromiseCapability(C); + var reject = capability.reject; + var result = perform(function () { + forOf(iterable, false, function (promise) { + C.resolve(promise).then(capability.resolve, reject); + }); + }); + if (result.e) reject(result.v); + return capability.promise; + } +}); + +},{"./_a-function":25,"./_an-instance":27,"./_classof":30,"./_core":32,"./_ctx":33,"./_export":39,"./_for-of":41,"./_global":42,"./_is-object":51,"./_iter-detect":55,"./_library":58,"./_microtask":60,"./_new-promise-capability":61,"./_perform":74,"./_promise-resolve":75,"./_redefine-all":77,"./_set-species":80,"./_set-to-string-tag":81,"./_species-constructor":84,"./_task":86,"./_user-agent":94,"./_wks":97}],107:[function(require,module,exports){ +'use strict'; +var $at = require('./_string-at')(true); + +// 21.1.3.27 String.prototype[@@iterator]() +require('./_iter-define')(String, 'String', function (iterated) { + this._t = String(iterated); // target + this._i = 0; // next index +// 21.1.5.2.1 %StringIteratorPrototype%.next() +}, function () { + var O = this._t; + var index = this._i; + var point; + if (index >= O.length) return { value: undefined, done: true }; + point = $at(O, index); + this._i += point.length; + return { value: point, done: false }; +}); + +},{"./_iter-define":54,"./_string-at":85}],108:[function(require,module,exports){ +'use strict'; +// ECMAScript 6 symbols shim +var global = require('./_global'); +var has = require('./_has'); +var DESCRIPTORS = require('./_descriptors'); +var $export = require('./_export'); +var redefine = require('./_redefine'); +var META = require('./_meta').KEY; +var $fails = require('./_fails'); +var shared = require('./_shared'); +var setToStringTag = require('./_set-to-string-tag'); +var uid = require('./_uid'); +var wks = require('./_wks'); +var wksExt = require('./_wks-ext'); +var wksDefine = require('./_wks-define'); +var enumKeys = require('./_enum-keys'); +var isArray = require('./_is-array'); +var anObject = require('./_an-object'); +var isObject = require('./_is-object'); +var toIObject = require('./_to-iobject'); +var toPrimitive = require('./_to-primitive'); +var createDesc = require('./_property-desc'); +var _create = require('./_object-create'); +var gOPNExt = require('./_object-gopn-ext'); +var $GOPD = require('./_object-gopd'); +var $DP = require('./_object-dp'); +var $keys = require('./_object-keys'); +var gOPD = $GOPD.f; +var dP = $DP.f; +var gOPN = gOPNExt.f; +var $Symbol = global.Symbol; +var $JSON = global.JSON; +var _stringify = $JSON && $JSON.stringify; +var PROTOTYPE = 'prototype'; +var HIDDEN = wks('_hidden'); +var TO_PRIMITIVE = wks('toPrimitive'); +var isEnum = {}.propertyIsEnumerable; +var SymbolRegistry = shared('symbol-registry'); +var AllSymbols = shared('symbols'); +var OPSymbols = shared('op-symbols'); +var ObjectProto = Object[PROTOTYPE]; +var USE_NATIVE = typeof $Symbol == 'function'; +var QObject = global.QObject; +// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173 +var setter = !QObject || !QObject[PROTOTYPE] || !QObject[PROTOTYPE].findChild; + +// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687 +var setSymbolDesc = DESCRIPTORS && $fails(function () { + return _create(dP({}, 'a', { + get: function () { return dP(this, 'a', { value: 7 }).a; } + })).a != 7; +}) ? function (it, key, D) { + var protoDesc = gOPD(ObjectProto, key); + if (protoDesc) delete ObjectProto[key]; + dP(it, key, D); + if (protoDesc && it !== ObjectProto) dP(ObjectProto, key, protoDesc); +} : dP; + +var wrap = function (tag) { + var sym = AllSymbols[tag] = _create($Symbol[PROTOTYPE]); + sym._k = tag; + return sym; +}; + +var isSymbol = USE_NATIVE && typeof $Symbol.iterator == 'symbol' ? function (it) { + return typeof it == 'symbol'; +} : function (it) { + return it instanceof $Symbol; +}; + +var $defineProperty = function defineProperty(it, key, D) { + if (it === ObjectProto) $defineProperty(OPSymbols, key, D); + anObject(it); + key = toPrimitive(key, true); + anObject(D); + if (has(AllSymbols, key)) { + if (!D.enumerable) { + if (!has(it, HIDDEN)) dP(it, HIDDEN, createDesc(1, {})); + it[HIDDEN][key] = true; + } else { + if (has(it, HIDDEN) && it[HIDDEN][key]) it[HIDDEN][key] = false; + D = _create(D, { enumerable: createDesc(0, false) }); + } return setSymbolDesc(it, key, D); + } return dP(it, key, D); +}; +var $defineProperties = function defineProperties(it, P) { + anObject(it); + var keys = enumKeys(P = toIObject(P)); + var i = 0; + var l = keys.length; + var key; + while (l > i) $defineProperty(it, key = keys[i++], P[key]); + return it; +}; +var $create = function create(it, P) { + return P === undefined ? _create(it) : $defineProperties(_create(it), P); +}; +var $propertyIsEnumerable = function propertyIsEnumerable(key) { + var E = isEnum.call(this, key = toPrimitive(key, true)); + if (this === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return false; + return E || !has(this, key) || !has(AllSymbols, key) || has(this, HIDDEN) && this[HIDDEN][key] ? E : true; +}; +var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(it, key) { + it = toIObject(it); + key = toPrimitive(key, true); + if (it === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return; + var D = gOPD(it, key); + if (D && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) D.enumerable = true; + return D; +}; +var $getOwnPropertyNames = function getOwnPropertyNames(it) { + var names = gOPN(toIObject(it)); + var result = []; + var i = 0; + var key; + while (names.length > i) { + if (!has(AllSymbols, key = names[i++]) && key != HIDDEN && key != META) result.push(key); + } return result; +}; +var $getOwnPropertySymbols = function getOwnPropertySymbols(it) { + var IS_OP = it === ObjectProto; + var names = gOPN(IS_OP ? OPSymbols : toIObject(it)); + var result = []; + var i = 0; + var key; + while (names.length > i) { + if (has(AllSymbols, key = names[i++]) && (IS_OP ? has(ObjectProto, key) : true)) result.push(AllSymbols[key]); + } return result; +}; + +// 19.4.1.1 Symbol([description]) +if (!USE_NATIVE) { + $Symbol = function Symbol() { + if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor!'); + var tag = uid(arguments.length > 0 ? arguments[0] : undefined); + var $set = function (value) { + if (this === ObjectProto) $set.call(OPSymbols, value); + if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false; + setSymbolDesc(this, tag, createDesc(1, value)); + }; + if (DESCRIPTORS && setter) setSymbolDesc(ObjectProto, tag, { configurable: true, set: $set }); + return wrap(tag); + }; + redefine($Symbol[PROTOTYPE], 'toString', function toString() { + return this._k; + }); + + $GOPD.f = $getOwnPropertyDescriptor; + $DP.f = $defineProperty; + require('./_object-gopn').f = gOPNExt.f = $getOwnPropertyNames; + require('./_object-pie').f = $propertyIsEnumerable; + require('./_object-gops').f = $getOwnPropertySymbols; + + if (DESCRIPTORS && !require('./_library')) { + redefine(ObjectProto, 'propertyIsEnumerable', $propertyIsEnumerable, true); + } + + wksExt.f = function (name) { + return wrap(wks(name)); + }; +} + +$export($export.G + $export.W + $export.F * !USE_NATIVE, { Symbol: $Symbol }); + +for (var es6Symbols = ( + // 19.4.2.2, 19.4.2.3, 19.4.2.4, 19.4.2.6, 19.4.2.8, 19.4.2.9, 19.4.2.10, 19.4.2.11, 19.4.2.12, 19.4.2.13, 19.4.2.14 + 'hasInstance,isConcatSpreadable,iterator,match,replace,search,species,split,toPrimitive,toStringTag,unscopables' +).split(','), j = 0; es6Symbols.length > j;)wks(es6Symbols[j++]); + +for (var wellKnownSymbols = $keys(wks.store), k = 0; wellKnownSymbols.length > k;) wksDefine(wellKnownSymbols[k++]); + +$export($export.S + $export.F * !USE_NATIVE, 'Symbol', { + // 19.4.2.1 Symbol.for(key) + 'for': function (key) { + return has(SymbolRegistry, key += '') + ? SymbolRegistry[key] + : SymbolRegistry[key] = $Symbol(key); + }, + // 19.4.2.5 Symbol.keyFor(sym) + keyFor: function keyFor(sym) { + if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol!'); + for (var key in SymbolRegistry) if (SymbolRegistry[key] === sym) return key; + }, + useSetter: function () { setter = true; }, + useSimple: function () { setter = false; } +}); + +$export($export.S + $export.F * !USE_NATIVE, 'Object', { + // 19.1.2.2 Object.create(O [, Properties]) + create: $create, + // 19.1.2.4 Object.defineProperty(O, P, Attributes) + defineProperty: $defineProperty, + // 19.1.2.3 Object.defineProperties(O, Properties) + defineProperties: $defineProperties, + // 19.1.2.6 Object.getOwnPropertyDescriptor(O, P) + getOwnPropertyDescriptor: $getOwnPropertyDescriptor, + // 19.1.2.7 Object.getOwnPropertyNames(O) + getOwnPropertyNames: $getOwnPropertyNames, + // 19.1.2.8 Object.getOwnPropertySymbols(O) + getOwnPropertySymbols: $getOwnPropertySymbols +}); + +// 24.3.2 JSON.stringify(value [, replacer [, space]]) +$JSON && $export($export.S + $export.F * (!USE_NATIVE || $fails(function () { + var S = $Symbol(); + // MS Edge converts symbol values to JSON as {} + // WebKit converts symbol values to JSON as null + // V8 throws on boxed symbols + return _stringify([S]) != '[null]' || _stringify({ a: S }) != '{}' || _stringify(Object(S)) != '{}'; +})), 'JSON', { + stringify: function stringify(it) { + var args = [it]; + var i = 1; + var replacer, $replacer; + while (arguments.length > i) args.push(arguments[i++]); + $replacer = replacer = args[1]; + if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined + if (!isArray(replacer)) replacer = function (key, value) { + if (typeof $replacer == 'function') value = $replacer.call(this, key, value); + if (!isSymbol(value)) return value; + }; + args[1] = replacer; + return _stringify.apply($JSON, args); + } +}); + +// 19.4.3.4 Symbol.prototype[@@toPrimitive](hint) +$Symbol[PROTOTYPE][TO_PRIMITIVE] || require('./_hide')($Symbol[PROTOTYPE], TO_PRIMITIVE, $Symbol[PROTOTYPE].valueOf); +// 19.4.3.5 Symbol.prototype[@@toStringTag] +setToStringTag($Symbol, 'Symbol'); +// 20.2.1.9 Math[@@toStringTag] +setToStringTag(Math, 'Math', true); +// 24.3.3 JSON[@@toStringTag] +setToStringTag(global.JSON, 'JSON', true); + +},{"./_an-object":28,"./_descriptors":35,"./_enum-keys":38,"./_export":39,"./_fails":40,"./_global":42,"./_has":43,"./_hide":44,"./_is-array":50,"./_is-object":51,"./_library":58,"./_meta":59,"./_object-create":62,"./_object-dp":63,"./_object-gopd":65,"./_object-gopn":67,"./_object-gopn-ext":66,"./_object-gops":68,"./_object-keys":71,"./_object-pie":72,"./_property-desc":76,"./_redefine":78,"./_set-to-string-tag":81,"./_shared":83,"./_to-iobject":89,"./_to-primitive":92,"./_uid":93,"./_wks":97,"./_wks-define":95,"./_wks-ext":96}],109:[function(require,module,exports){ +// https://github.com/tc39/proposal-promise-finally +'use strict'; +var $export = require('./_export'); +var core = require('./_core'); +var global = require('./_global'); +var speciesConstructor = require('./_species-constructor'); +var promiseResolve = require('./_promise-resolve'); + +$export($export.P + $export.R, 'Promise', { 'finally': function (onFinally) { + var C = speciesConstructor(this, core.Promise || global.Promise); + var isFunction = typeof onFinally == 'function'; + return this.then( + isFunction ? function (x) { + return promiseResolve(C, onFinally()).then(function () { return x; }); + } : onFinally, + isFunction ? function (e) { + return promiseResolve(C, onFinally()).then(function () { throw e; }); + } : onFinally + ); +} }); + +},{"./_core":32,"./_export":39,"./_global":42,"./_promise-resolve":75,"./_species-constructor":84}],110:[function(require,module,exports){ +'use strict'; +// https://github.com/tc39/proposal-promise-try +var $export = require('./_export'); +var newPromiseCapability = require('./_new-promise-capability'); +var perform = require('./_perform'); + +$export($export.S, 'Promise', { 'try': function (callbackfn) { + var promiseCapability = newPromiseCapability.f(this); + var result = perform(callbackfn); + (result.e ? promiseCapability.reject : promiseCapability.resolve)(result.v); + return promiseCapability.promise; +} }); + +},{"./_export":39,"./_new-promise-capability":61,"./_perform":74}],111:[function(require,module,exports){ +require('./_wks-define')('asyncIterator'); + +},{"./_wks-define":95}],112:[function(require,module,exports){ +require('./_wks-define')('observable'); + +},{"./_wks-define":95}],113:[function(require,module,exports){ +require('./es6.array.iterator'); +var global = require('./_global'); +var hide = require('./_hide'); +var Iterators = require('./_iterators'); +var TO_STRING_TAG = require('./_wks')('toStringTag'); + +var DOMIterables = ('CSSRuleList,CSSStyleDeclaration,CSSValueList,ClientRectList,DOMRectList,DOMStringList,' + + 'DOMTokenList,DataTransferItemList,FileList,HTMLAllCollection,HTMLCollection,HTMLFormElement,HTMLSelectElement,' + + 'MediaList,MimeTypeArray,NamedNodeMap,NodeList,PaintRequestList,Plugin,PluginArray,SVGLengthList,SVGNumberList,' + + 'SVGPathSegList,SVGPointList,SVGStringList,SVGTransformList,SourceBufferList,StyleSheetList,TextTrackCueList,' + + 'TextTrackList,TouchList').split(','); + +for (var i = 0; i < DOMIterables.length; i++) { + var NAME = DOMIterables[i]; + var Collection = global[NAME]; + var proto = Collection && Collection.prototype; + if (proto && !proto[TO_STRING_TAG]) hide(proto, TO_STRING_TAG, NAME); + Iterators[NAME] = Iterators.Array; +} + +},{"./_global":42,"./_hide":44,"./_iterators":57,"./_wks":97,"./es6.array.iterator":99}],114:[function(require,module,exports){ +/** + * Copyright (c) 2014-present, Facebook, Inc. + * + * This source code is licensed under the MIT license found in the + * LICENSE file in the root directory of this source tree. + */ + +// This method of obtaining a reference to the global object needs to be +// kept identical to the way it is obtained in runtime.js +var g = (function() { return this })() || Function("return this")(); + +// Use `getOwnPropertyNames` because not all browsers support calling +// `hasOwnProperty` on the global `self` object in a worker. See #183. +var hadRuntime = g.regeneratorRuntime && + Object.getOwnPropertyNames(g).indexOf("regeneratorRuntime") >= 0; + +// Save the old regeneratorRuntime in case it needs to be restored later. +var oldRuntime = hadRuntime && g.regeneratorRuntime; + +// Force reevalutation of runtime.js. +g.regeneratorRuntime = undefined; + +module.exports = require("./runtime"); + +if (hadRuntime) { + // Restore the original runtime. + g.regeneratorRuntime = oldRuntime; +} else { + // Remove the global property added by runtime.js. + try { + delete g.regeneratorRuntime; + } catch(e) { + g.regeneratorRuntime = undefined; + } +} + +},{"./runtime":115}],115:[function(require,module,exports){ +/** + * Copyright (c) 2014-present, Facebook, Inc. + * + * This source code is licensed under the MIT license found in the + * LICENSE file in the root directory of this source tree. + */ + +!(function(global) { + "use strict"; + + var Op = Object.prototype; + var hasOwn = Op.hasOwnProperty; + var undefined; // More compressible than void 0. + var $Symbol = typeof Symbol === "function" ? Symbol : {}; + var iteratorSymbol = $Symbol.iterator || "@@iterator"; + var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator"; + var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag"; + + var inModule = typeof module === "object"; + var runtime = global.regeneratorRuntime; + if (runtime) { + if (inModule) { + // If regeneratorRuntime is defined globally and we're in a module, + // make the exports object identical to regeneratorRuntime. + module.exports = runtime; + } + // Don't bother evaluating the rest of this file if the runtime was + // already defined globally. + return; + } + + // Define the runtime globally (as expected by generated code) as either + // module.exports (if we're in a module) or a new, empty object. + runtime = global.regeneratorRuntime = inModule ? module.exports : {}; + + function wrap(innerFn, outerFn, self, tryLocsList) { + // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator. + var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator; + var generator = Object.create(protoGenerator.prototype); + var context = new Context(tryLocsList || []); + + // The ._invoke method unifies the implementations of the .next, + // .throw, and .return methods. + generator._invoke = makeInvokeMethod(innerFn, self, context); + + return generator; + } + runtime.wrap = wrap; + + // Try/catch helper to minimize deoptimizations. Returns a completion + // record like context.tryEntries[i].completion. This interface could + // have been (and was previously) designed to take a closure to be + // invoked without arguments, but in all the cases we care about we + // already have an existing method we want to call, so there's no need + // to create a new function object. We can even get away with assuming + // the method takes exactly one argument, since that happens to be true + // in every case, so we don't have to touch the arguments object. The + // only additional allocation required is the completion record, which + // has a stable shape and so hopefully should be cheap to allocate. + function tryCatch(fn, obj, arg) { + try { + return { type: "normal", arg: fn.call(obj, arg) }; + } catch (err) { + return { type: "throw", arg: err }; + } + } + + var GenStateSuspendedStart = "suspendedStart"; + var GenStateSuspendedYield = "suspendedYield"; + var GenStateExecuting = "executing"; + var GenStateCompleted = "completed"; + + // Returning this object from the innerFn has the same effect as + // breaking out of the dispatch switch statement. + var ContinueSentinel = {}; + + // Dummy constructor functions that we use as the .constructor and + // .constructor.prototype properties for functions that return Generator + // objects. For full spec compliance, you may wish to configure your + // minifier not to mangle the names of these two functions. + function Generator() {} + function GeneratorFunction() {} + function GeneratorFunctionPrototype() {} + + // This is a polyfill for %IteratorPrototype% for environments that + // don't natively support it. + var IteratorPrototype = {}; + IteratorPrototype[iteratorSymbol] = function () { + return this; + }; + + var getProto = Object.getPrototypeOf; + var NativeIteratorPrototype = getProto && getProto(getProto(values([]))); + if (NativeIteratorPrototype && + NativeIteratorPrototype !== Op && + hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) { + // This environment has a native %IteratorPrototype%; use it instead + // of the polyfill. + IteratorPrototype = NativeIteratorPrototype; + } + + var Gp = GeneratorFunctionPrototype.prototype = + Generator.prototype = Object.create(IteratorPrototype); + GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype; + GeneratorFunctionPrototype.constructor = GeneratorFunction; + GeneratorFunctionPrototype[toStringTagSymbol] = + GeneratorFunction.displayName = "GeneratorFunction"; + + // Helper for defining the .next, .throw, and .return methods of the + // Iterator interface in terms of a single ._invoke method. + function defineIteratorMethods(prototype) { + ["next", "throw", "return"].forEach(function(method) { + prototype[method] = function(arg) { + return this._invoke(method, arg); + }; + }); + } + + runtime.isGeneratorFunction = function(genFun) { + var ctor = typeof genFun === "function" && genFun.constructor; + return ctor + ? ctor === GeneratorFunction || + // For the native GeneratorFunction constructor, the best we can + // do is to check its .name property. + (ctor.displayName || ctor.name) === "GeneratorFunction" + : false; + }; + + runtime.mark = function(genFun) { + if (Object.setPrototypeOf) { + Object.setPrototypeOf(genFun, GeneratorFunctionPrototype); + } else { + genFun.__proto__ = GeneratorFunctionPrototype; + if (!(toStringTagSymbol in genFun)) { + genFun[toStringTagSymbol] = "GeneratorFunction"; + } + } + genFun.prototype = Object.create(Gp); + return genFun; + }; + + // Within the body of any async function, `await x` is transformed to + // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test + // `hasOwn.call(value, "__await")` to determine if the yielded value is + // meant to be awaited. + runtime.awrap = function(arg) { + return { __await: arg }; + }; + + function AsyncIterator(generator) { + function invoke(method, arg, resolve, reject) { + var record = tryCatch(generator[method], generator, arg); + if (record.type === "throw") { + reject(record.arg); + } else { + var result = record.arg; + var value = result.value; + if (value && + typeof value === "object" && + hasOwn.call(value, "__await")) { + return Promise.resolve(value.__await).then(function(value) { + invoke("next", value, resolve, reject); + }, function(err) { + invoke("throw", err, resolve, reject); + }); + } + + return Promise.resolve(value).then(function(unwrapped) { + // When a yielded Promise is resolved, its final value becomes + // the .value of the Promise<{value,done}> result for the + // current iteration. If the Promise is rejected, however, the + // result for this iteration will be rejected with the same + // reason. Note that rejections of yielded Promises are not + // thrown back into the generator function, as is the case + // when an awaited Promise is rejected. This difference in + // behavior between yield and await is important, because it + // allows the consumer to decide what to do with the yielded + // rejection (swallow it and continue, manually .throw it back + // into the generator, abandon iteration, whatever). With + // await, by contrast, there is no opportunity to examine the + // rejection reason outside the generator function, so the + // only option is to throw it from the await expression, and + // let the generator function handle the exception. + result.value = unwrapped; + resolve(result); + }, reject); + } + } + + var previousPromise; + + function enqueue(method, arg) { + function callInvokeWithMethodAndArg() { + return new Promise(function(resolve, reject) { + invoke(method, arg, resolve, reject); + }); + } + + return previousPromise = + // If enqueue has been called before, then we want to wait until + // all previous Promises have been resolved before calling invoke, + // so that results are always delivered in the correct order. If + // enqueue has not been called before, then it is important to + // call invoke immediately, without waiting on a callback to fire, + // so that the async generator function has the opportunity to do + // any necessary setup in a predictable way. This predictability + // is why the Promise constructor synchronously invokes its + // executor callback, and why async functions synchronously + // execute code before the first await. Since we implement simple + // async functions in terms of async generators, it is especially + // important to get this right, even though it requires care. + previousPromise ? previousPromise.then( + callInvokeWithMethodAndArg, + // Avoid propagating failures to Promises returned by later + // invocations of the iterator. + callInvokeWithMethodAndArg + ) : callInvokeWithMethodAndArg(); + } + + // Define the unified helper method that is used to implement .next, + // .throw, and .return (see defineIteratorMethods). + this._invoke = enqueue; + } + + defineIteratorMethods(AsyncIterator.prototype); + AsyncIterator.prototype[asyncIteratorSymbol] = function () { + return this; + }; + runtime.AsyncIterator = AsyncIterator; + + // Note that simple async functions are implemented on top of + // AsyncIterator objects; they just return a Promise for the value of + // the final result produced by the iterator. + runtime.async = function(innerFn, outerFn, self, tryLocsList) { + var iter = new AsyncIterator( + wrap(innerFn, outerFn, self, tryLocsList) + ); + + return runtime.isGeneratorFunction(outerFn) + ? iter // If outerFn is a generator, return the full iterator. + : iter.next().then(function(result) { + return result.done ? result.value : iter.next(); + }); + }; + + function makeInvokeMethod(innerFn, self, context) { + var state = GenStateSuspendedStart; + + return function invoke(method, arg) { + if (state === GenStateExecuting) { + throw new Error("Generator is already running"); + } + + if (state === GenStateCompleted) { + if (method === "throw") { + throw arg; + } + + // Be forgiving, per 25.3.3.3.3 of the spec: + // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume + return doneResult(); + } + + context.method = method; + context.arg = arg; + + while (true) { + var delegate = context.delegate; + if (delegate) { + var delegateResult = maybeInvokeDelegate(delegate, context); + if (delegateResult) { + if (delegateResult === ContinueSentinel) continue; + return delegateResult; + } + } + + if (context.method === "next") { + // Setting context._sent for legacy support of Babel's + // function.sent implementation. + context.sent = context._sent = context.arg; + + } else if (context.method === "throw") { + if (state === GenStateSuspendedStart) { + state = GenStateCompleted; + throw context.arg; + } + + context.dispatchException(context.arg); + + } else if (context.method === "return") { + context.abrupt("return", context.arg); + } + + state = GenStateExecuting; + + var record = tryCatch(innerFn, self, context); + if (record.type === "normal") { + // If an exception is thrown from innerFn, we leave state === + // GenStateExecuting and loop back for another invocation. + state = context.done + ? GenStateCompleted + : GenStateSuspendedYield; + + if (record.arg === ContinueSentinel) { + continue; + } + + return { + value: record.arg, + done: context.done + }; + + } else if (record.type === "throw") { + state = GenStateCompleted; + // Dispatch the exception by looping back around to the + // context.dispatchException(context.arg) call above. + context.method = "throw"; + context.arg = record.arg; + } + } + }; + } + + // Call delegate.iterator[context.method](context.arg) and handle the + // result, either by returning a { value, done } result from the + // delegate iterator, or by modifying context.method and context.arg, + // setting context.delegate to null, and returning the ContinueSentinel. + function maybeInvokeDelegate(delegate, context) { + var method = delegate.iterator[context.method]; + if (method === undefined) { + // A .throw or .return when the delegate iterator has no .throw + // method always terminates the yield* loop. + context.delegate = null; + + if (context.method === "throw") { + if (delegate.iterator.return) { + // If the delegate iterator has a return method, give it a + // chance to clean up. + context.method = "return"; + context.arg = undefined; + maybeInvokeDelegate(delegate, context); + + if (context.method === "throw") { + // If maybeInvokeDelegate(context) changed context.method from + // "return" to "throw", let that override the TypeError below. + return ContinueSentinel; + } + } + + context.method = "throw"; + context.arg = new TypeError( + "The iterator does not provide a 'throw' method"); + } + + return ContinueSentinel; + } + + var record = tryCatch(method, delegate.iterator, context.arg); + + if (record.type === "throw") { + context.method = "throw"; + context.arg = record.arg; + context.delegate = null; + return ContinueSentinel; + } + + var info = record.arg; + + if (! info) { + context.method = "throw"; + context.arg = new TypeError("iterator result is not an object"); + context.delegate = null; + return ContinueSentinel; + } + + if (info.done) { + // Assign the result of the finished delegate to the temporary + // variable specified by delegate.resultName (see delegateYield). + context[delegate.resultName] = info.value; + + // Resume execution at the desired location (see delegateYield). + context.next = delegate.nextLoc; + + // If context.method was "throw" but the delegate handled the + // exception, let the outer generator proceed normally. If + // context.method was "next", forget context.arg since it has been + // "consumed" by the delegate iterator. If context.method was + // "return", allow the original .return call to continue in the + // outer generator. + if (context.method !== "return") { + context.method = "next"; + context.arg = undefined; + } + + } else { + // Re-yield the result returned by the delegate method. + return info; + } + + // The delegate iterator is finished, so forget it and continue with + // the outer generator. + context.delegate = null; + return ContinueSentinel; + } + + // Define Generator.prototype.{next,throw,return} in terms of the + // unified ._invoke helper method. + defineIteratorMethods(Gp); + + Gp[toStringTagSymbol] = "Generator"; + + // A Generator should always return itself as the iterator object when the + // @@iterator function is called on it. Some browsers' implementations of the + // iterator prototype chain incorrectly implement this, causing the Generator + // object to not be returned from this call. This ensures that doesn't happen. + // See https://github.com/facebook/regenerator/issues/274 for more details. + Gp[iteratorSymbol] = function() { + return this; + }; + + Gp.toString = function() { + return "[object Generator]"; + }; + + function pushTryEntry(locs) { + var entry = { tryLoc: locs[0] }; + + if (1 in locs) { + entry.catchLoc = locs[1]; + } + + if (2 in locs) { + entry.finallyLoc = locs[2]; + entry.afterLoc = locs[3]; + } + + this.tryEntries.push(entry); + } + + function resetTryEntry(entry) { + var record = entry.completion || {}; + record.type = "normal"; + delete record.arg; + entry.completion = record; + } + + function Context(tryLocsList) { + // The root entry object (effectively a try statement without a catch + // or a finally block) gives us a place to store values thrown from + // locations where there is no enclosing try statement. + this.tryEntries = [{ tryLoc: "root" }]; + tryLocsList.forEach(pushTryEntry, this); + this.reset(true); + } + + runtime.keys = function(object) { + var keys = []; + for (var key in object) { + keys.push(key); + } + keys.reverse(); + + // Rather than returning an object with a next method, we keep + // things simple and return the next function itself. + return function next() { + while (keys.length) { + var key = keys.pop(); + if (key in object) { + next.value = key; + next.done = false; + return next; + } + } + + // To avoid creating an additional object, we just hang the .value + // and .done properties off the next function object itself. This + // also ensures that the minifier will not anonymize the function. + next.done = true; + return next; + }; + }; + + function values(iterable) { + if (iterable) { + var iteratorMethod = iterable[iteratorSymbol]; + if (iteratorMethod) { + return iteratorMethod.call(iterable); + } + + if (typeof iterable.next === "function") { + return iterable; + } + + if (!isNaN(iterable.length)) { + var i = -1, next = function next() { + while (++i < iterable.length) { + if (hasOwn.call(iterable, i)) { + next.value = iterable[i]; + next.done = false; + return next; + } + } + + next.value = undefined; + next.done = true; + + return next; + }; + + return next.next = next; + } + } + + // Return an iterator with no values. + return { next: doneResult }; + } + runtime.values = values; + + function doneResult() { + return { value: undefined, done: true }; + } + + Context.prototype = { + constructor: Context, + + reset: function(skipTempReset) { + this.prev = 0; + this.next = 0; + // Resetting context._sent for legacy support of Babel's + // function.sent implementation. + this.sent = this._sent = undefined; + this.done = false; + this.delegate = null; + + this.method = "next"; + this.arg = undefined; + + this.tryEntries.forEach(resetTryEntry); + + if (!skipTempReset) { + for (var name in this) { + // Not sure about the optimal order of these conditions: + if (name.charAt(0) === "t" && + hasOwn.call(this, name) && + !isNaN(+name.slice(1))) { + this[name] = undefined; + } + } + } + }, + + stop: function() { + this.done = true; + + var rootEntry = this.tryEntries[0]; + var rootRecord = rootEntry.completion; + if (rootRecord.type === "throw") { + throw rootRecord.arg; + } + + return this.rval; + }, + + dispatchException: function(exception) { + if (this.done) { + throw exception; + } + + var context = this; + function handle(loc, caught) { + record.type = "throw"; + record.arg = exception; + context.next = loc; + + if (caught) { + // If the dispatched exception was caught by a catch block, + // then let that catch block handle the exception normally. + context.method = "next"; + context.arg = undefined; + } + + return !! caught; + } + + for (var i = this.tryEntries.length - 1; i >= 0; --i) { + var entry = this.tryEntries[i]; + var record = entry.completion; + + if (entry.tryLoc === "root") { + // Exception thrown outside of any try block that could handle + // it, so set the completion value of the entire function to + // throw the exception. + return handle("end"); + } + + if (entry.tryLoc <= this.prev) { + var hasCatch = hasOwn.call(entry, "catchLoc"); + var hasFinally = hasOwn.call(entry, "finallyLoc"); + + if (hasCatch && hasFinally) { + if (this.prev < entry.catchLoc) { + return handle(entry.catchLoc, true); + } else if (this.prev < entry.finallyLoc) { + return handle(entry.finallyLoc); + } + + } else if (hasCatch) { + if (this.prev < entry.catchLoc) { + return handle(entry.catchLoc, true); + } + + } else if (hasFinally) { + if (this.prev < entry.finallyLoc) { + return handle(entry.finallyLoc); + } + + } else { + throw new Error("try statement without catch or finally"); + } + } + } + }, + + abrupt: function(type, arg) { + for (var i = this.tryEntries.length - 1; i >= 0; --i) { + var entry = this.tryEntries[i]; + if (entry.tryLoc <= this.prev && + hasOwn.call(entry, "finallyLoc") && + this.prev < entry.finallyLoc) { + var finallyEntry = entry; + break; + } + } + + if (finallyEntry && + (type === "break" || + type === "continue") && + finallyEntry.tryLoc <= arg && + arg <= finallyEntry.finallyLoc) { + // Ignore the finally entry if control is not jumping to a + // location outside the try/catch block. + finallyEntry = null; + } + + var record = finallyEntry ? finallyEntry.completion : {}; + record.type = type; + record.arg = arg; + + if (finallyEntry) { + this.method = "next"; + this.next = finallyEntry.finallyLoc; + return ContinueSentinel; + } + + return this.complete(record); + }, + + complete: function(record, afterLoc) { + if (record.type === "throw") { + throw record.arg; + } + + if (record.type === "break" || + record.type === "continue") { + this.next = record.arg; + } else if (record.type === "return") { + this.rval = this.arg = record.arg; + this.method = "return"; + this.next = "end"; + } else if (record.type === "normal" && afterLoc) { + this.next = afterLoc; + } + + return ContinueSentinel; + }, + + finish: function(finallyLoc) { + for (var i = this.tryEntries.length - 1; i >= 0; --i) { + var entry = this.tryEntries[i]; + if (entry.finallyLoc === finallyLoc) { + this.complete(entry.completion, entry.afterLoc); + resetTryEntry(entry); + return ContinueSentinel; + } + } + }, + + "catch": function(tryLoc) { + for (var i = this.tryEntries.length - 1; i >= 0; --i) { + var entry = this.tryEntries[i]; + if (entry.tryLoc === tryLoc) { + var record = entry.completion; + if (record.type === "throw") { + var thrown = record.arg; + resetTryEntry(entry); + } + return thrown; + } + } + + // The context.catch method must only be called with a location + // argument that corresponds to a known catch block. + throw new Error("illegal catch attempt"); + }, + + delegateYield: function(iterable, resultName, nextLoc) { + this.delegate = { + iterator: values(iterable), + resultName: resultName, + nextLoc: nextLoc + }; + + if (this.method === "next") { + // Deliberately forget the last sent value so that we don't + // accidentally pass it on to the delegate. + this.arg = undefined; + } + + return ContinueSentinel; + } + }; +})( + // In sloppy mode, unbound `this` refers to the global object, fallback to + // Function constructor if we're in global strict mode. That is sadly a form + // of indirect eval which violates Content Security Policy. + (function() { return this })() || Function("return this")() +); + +},{}],116:[function(require,module,exports){ + /* eslint-env node */ +'use strict'; + +// SDP helpers. +var SDPUtils = {}; + +// Generate an alphanumeric identifier for cname or mids. +// TODO: use UUIDs instead? https://gist.github.com/jed/982883 +SDPUtils.generateIdentifier = function() { + return Math.random().toString(36).substr(2, 10); +}; + +// The RTCP CNAME used by all peerconnections from the same JS. +SDPUtils.localCName = SDPUtils.generateIdentifier(); + +// Splits SDP into lines, dealing with both CRLF and LF. +SDPUtils.splitLines = function(blob) { + return blob.trim().split('\n').map(function(line) { + return line.trim(); + }); +}; +// Splits SDP into sessionpart and mediasections. Ensures CRLF. +SDPUtils.splitSections = function(blob) { + var parts = blob.split('\nm='); + return parts.map(function(part, index) { + return (index > 0 ? 'm=' + part : part).trim() + '\r\n'; + }); +}; + +// Returns lines that start with a certain prefix. +SDPUtils.matchPrefix = function(blob, prefix) { + return SDPUtils.splitLines(blob).filter(function(line) { + return line.indexOf(prefix) === 0; + }); +}; + +// Parses an ICE candidate line. Sample input: +// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8 +// rport 55996" +SDPUtils.parseCandidate = function(line) { + var parts; + // Parse both variants. + if (line.indexOf('a=candidate:') === 0) { + parts = line.substring(12).split(' '); + } else { + parts = line.substring(10).split(' '); + } + + var candidate = { + foundation: parts[0], + component: parts[1], + protocol: parts[2].toLowerCase(), + priority: parseInt(parts[3], 10), + ip: parts[4], + port: parseInt(parts[5], 10), + // skip parts[6] == 'typ' + type: parts[7] + }; + + for (var i = 8; i < parts.length; i += 2) { + switch (parts[i]) { + case 'raddr': + candidate.relatedAddress = parts[i + 1]; + break; + case 'rport': + candidate.relatedPort = parseInt(parts[i + 1], 10); + break; + case 'tcptype': + candidate.tcpType = parts[i + 1]; + break; + default: // extension handling, in particular ufrag + candidate[parts[i]] = parts[i + 1]; + break; + } + } + return candidate; +}; + +// Translates a candidate object into SDP candidate attribute. +SDPUtils.writeCandidate = function(candidate) { + var sdp = []; + sdp.push(candidate.foundation); + sdp.push(candidate.component); + sdp.push(candidate.protocol.toUpperCase()); + sdp.push(candidate.priority); + sdp.push(candidate.ip); + sdp.push(candidate.port); + + var type = candidate.type; + sdp.push('typ'); + sdp.push(type); + if (type !== 'host' && candidate.relatedAddress && + candidate.relatedPort) { + sdp.push('raddr'); + sdp.push(candidate.relatedAddress); // was: relAddr + sdp.push('rport'); + sdp.push(candidate.relatedPort); // was: relPort + } + if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') { + sdp.push('tcptype'); + sdp.push(candidate.tcpType); + } + return 'candidate:' + sdp.join(' '); +}; + +// Parses an ice-options line, returns an array of option tags. +// a=ice-options:foo bar +SDPUtils.parseIceOptions = function(line) { + return line.substr(14).split(' '); +} + +// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input: +// a=rtpmap:111 opus/48000/2 +SDPUtils.parseRtpMap = function(line) { + var parts = line.substr(9).split(' '); + var parsed = { + payloadType: parseInt(parts.shift(), 10) // was: id + }; + + parts = parts[0].split('/'); + + parsed.name = parts[0]; + parsed.clockRate = parseInt(parts[1], 10); // was: clockrate + // was: channels + parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1; + return parsed; +}; + +// Generate an a=rtpmap line from RTCRtpCodecCapability or +// RTCRtpCodecParameters. +SDPUtils.writeRtpMap = function(codec) { + var pt = codec.payloadType; + if (codec.preferredPayloadType !== undefined) { + pt = codec.preferredPayloadType; + } + return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate + + (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\r\n'; +}; + +// Parses an a=extmap line (headerextension from RFC 5285). Sample input: +// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset +// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset +SDPUtils.parseExtmap = function(line) { + var parts = line.substr(9).split(' '); + return { + id: parseInt(parts[0], 10), + direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv', + uri: parts[1] + }; +}; + +// Generates a=extmap line from RTCRtpHeaderExtensionParameters or +// RTCRtpHeaderExtension. +SDPUtils.writeExtmap = function(headerExtension) { + return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) + + (headerExtension.direction && headerExtension.direction !== 'sendrecv' + ? '/' + headerExtension.direction + : '') + + ' ' + headerExtension.uri + '\r\n'; +}; + +// Parses an ftmp line, returns dictionary. Sample input: +// a=fmtp:96 vbr=on;cng=on +// Also deals with vbr=on; cng=on +SDPUtils.parseFmtp = function(line) { + var parsed = {}; + var kv; + var parts = line.substr(line.indexOf(' ') + 1).split(';'); + for (var j = 0; j < parts.length; j++) { + kv = parts[j].trim().split('='); + parsed[kv[0].trim()] = kv[1]; + } + return parsed; +}; + +// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters. +SDPUtils.writeFmtp = function(codec) { + var line = ''; + var pt = codec.payloadType; + if (codec.preferredPayloadType !== undefined) { + pt = codec.preferredPayloadType; + } + if (codec.parameters && Object.keys(codec.parameters).length) { + var params = []; + Object.keys(codec.parameters).forEach(function(param) { + params.push(param + '=' + codec.parameters[param]); + }); + line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n'; + } + return line; +}; + +// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input: +// a=rtcp-fb:98 nack rpsi +SDPUtils.parseRtcpFb = function(line) { + var parts = line.substr(line.indexOf(' ') + 1).split(' '); + return { + type: parts.shift(), + parameter: parts.join(' ') + }; +}; +// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters. +SDPUtils.writeRtcpFb = function(codec) { + var lines = ''; + var pt = codec.payloadType; + if (codec.preferredPayloadType !== undefined) { + pt = codec.preferredPayloadType; + } + if (codec.rtcpFeedback && codec.rtcpFeedback.length) { + // FIXME: special handling for trr-int? + codec.rtcpFeedback.forEach(function(fb) { + lines += 'a=rtcp-fb:' + pt + ' ' + fb.type + + (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') + + '\r\n'; + }); + } + return lines; +}; + +// Parses an RFC 5576 ssrc media attribute. Sample input: +// a=ssrc:3735928559 cname:something +SDPUtils.parseSsrcMedia = function(line) { + var sp = line.indexOf(' '); + var parts = { + ssrc: parseInt(line.substr(7, sp - 7), 10) + }; + var colon = line.indexOf(':', sp); + if (colon > -1) { + parts.attribute = line.substr(sp + 1, colon - sp - 1); + parts.value = line.substr(colon + 1); + } else { + parts.attribute = line.substr(sp + 1); + } + return parts; +}; + +// Extracts the MID (RFC 5888) from a media section. +// returns the MID or undefined if no mid line was found. +SDPUtils.getMid = function(mediaSection) { + var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0]; + if (mid) { + return mid.substr(6); + } +} + +SDPUtils.parseFingerprint = function(line) { + var parts = line.substr(14).split(' '); + return { + algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge. + value: parts[1] + }; +}; + +// Extracts DTLS parameters from SDP media section or sessionpart. +// FIXME: for consistency with other functions this should only +// get the fingerprint line as input. See also getIceParameters. +SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) { + var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, + 'a=fingerprint:'); + // Note: a=setup line is ignored since we use the 'auto' role. + // Note2: 'algorithm' is not case sensitive except in Edge. + return { + role: 'auto', + fingerprints: lines.map(SDPUtils.parseFingerprint) + }; +}; + +// Serializes DTLS parameters to SDP. +SDPUtils.writeDtlsParameters = function(params, setupType) { + var sdp = 'a=setup:' + setupType + '\r\n'; + params.fingerprints.forEach(function(fp) { + sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n'; + }); + return sdp; +}; +// Parses ICE information from SDP media section or sessionpart. +// FIXME: for consistency with other functions this should only +// get the ice-ufrag and ice-pwd lines as input. +SDPUtils.getIceParameters = function(mediaSection, sessionpart) { + var lines = SDPUtils.splitLines(mediaSection); + // Search in session part, too. + lines = lines.concat(SDPUtils.splitLines(sessionpart)); + var iceParameters = { + usernameFragment: lines.filter(function(line) { + return line.indexOf('a=ice-ufrag:') === 0; + })[0].substr(12), + password: lines.filter(function(line) { + return line.indexOf('a=ice-pwd:') === 0; + })[0].substr(10) + }; + return iceParameters; +}; + +// Serializes ICE parameters to SDP. +SDPUtils.writeIceParameters = function(params) { + return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' + + 'a=ice-pwd:' + params.password + '\r\n'; +}; + +// Parses the SDP media section and returns RTCRtpParameters. +SDPUtils.parseRtpParameters = function(mediaSection) { + var description = { + codecs: [], + headerExtensions: [], + fecMechanisms: [], + rtcp: [] + }; + var lines = SDPUtils.splitLines(mediaSection); + var mline = lines[0].split(' '); + for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..] + var pt = mline[i]; + var rtpmapline = SDPUtils.matchPrefix( + mediaSection, 'a=rtpmap:' + pt + ' ')[0]; + if (rtpmapline) { + var codec = SDPUtils.parseRtpMap(rtpmapline); + var fmtps = SDPUtils.matchPrefix( + mediaSection, 'a=fmtp:' + pt + ' '); + // Only the first a=fmtp: is considered. + codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {}; + codec.rtcpFeedback = SDPUtils.matchPrefix( + mediaSection, 'a=rtcp-fb:' + pt + ' ') + .map(SDPUtils.parseRtcpFb); + description.codecs.push(codec); + // parse FEC mechanisms from rtpmap lines. + switch (codec.name.toUpperCase()) { + case 'RED': + case 'ULPFEC': + description.fecMechanisms.push(codec.name.toUpperCase()); + break; + default: // only RED and ULPFEC are recognized as FEC mechanisms. + break; + } + } + } + SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) { + description.headerExtensions.push(SDPUtils.parseExtmap(line)); + }); + // FIXME: parse rtcp. + return description; +}; + +// Generates parts of the SDP media section describing the capabilities / +// parameters. +SDPUtils.writeRtpDescription = function(kind, caps) { + var sdp = ''; + + // Build the mline. + sdp += 'm=' + kind + ' '; + sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs. + sdp += ' UDP/TLS/RTP/SAVPF '; + sdp += caps.codecs.map(function(codec) { + if (codec.preferredPayloadType !== undefined) { + return codec.preferredPayloadType; + } + return codec.payloadType; + }).join(' ') + '\r\n'; + + sdp += 'c=IN IP4 0.0.0.0\r\n'; + sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n'; + + // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb. + caps.codecs.forEach(function(codec) { + sdp += SDPUtils.writeRtpMap(codec); + sdp += SDPUtils.writeFmtp(codec); + sdp += SDPUtils.writeRtcpFb(codec); + }); + var maxptime = 0; + caps.codecs.forEach(function(codec) { + if (codec.maxptime > maxptime) { + maxptime = codec.maxptime; + } + }); + if (maxptime > 0) { + sdp += 'a=maxptime:' + maxptime + '\r\n'; + } + sdp += 'a=rtcp-mux\r\n'; + + caps.headerExtensions.forEach(function(extension) { + sdp += SDPUtils.writeExtmap(extension); + }); + // FIXME: write fecMechanisms. + return sdp; +}; + +// Parses the SDP media section and returns an array of +// RTCRtpEncodingParameters. +SDPUtils.parseRtpEncodingParameters = function(mediaSection) { + var encodingParameters = []; + var description = SDPUtils.parseRtpParameters(mediaSection); + var hasRed = description.fecMechanisms.indexOf('RED') !== -1; + var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1; + + // filter a=ssrc:... cname:, ignore PlanB-msid + var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(parts) { + return parts.attribute === 'cname'; + }); + var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc; + var secondarySsrc; + + var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID') + .map(function(line) { + var parts = line.split(' '); + parts.shift(); + return parts.map(function(part) { + return parseInt(part, 10); + }); + }); + if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) { + secondarySsrc = flows[0][1]; + } + + description.codecs.forEach(function(codec) { + if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) { + var encParam = { + ssrc: primarySsrc, + codecPayloadType: parseInt(codec.parameters.apt, 10), + rtx: { + ssrc: secondarySsrc + } + }; + encodingParameters.push(encParam); + if (hasRed) { + encParam = JSON.parse(JSON.stringify(encParam)); + encParam.fec = { + ssrc: secondarySsrc, + mechanism: hasUlpfec ? 'red+ulpfec' : 'red' + }; + encodingParameters.push(encParam); + } + } + }); + if (encodingParameters.length === 0 && primarySsrc) { + encodingParameters.push({ + ssrc: primarySsrc + }); + } + + // we support both b=AS and b=TIAS but interpret AS as TIAS. + var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b='); + if (bandwidth.length) { + if (bandwidth[0].indexOf('b=TIAS:') === 0) { + bandwidth = parseInt(bandwidth[0].substr(7), 10); + } else if (bandwidth[0].indexOf('b=AS:') === 0) { + bandwidth = parseInt(bandwidth[0].substr(5), 10); + } + encodingParameters.forEach(function(params) { + params.maxBitrate = bandwidth; + }); + } + return encodingParameters; +}; + +// parses http://draft.ortc.org/#rtcrtcpparameters* +SDPUtils.parseRtcpParameters = function(mediaSection) { + var rtcpParameters = {}; + + var cname; + // Gets the first SSRC. Note that with RTX there might be multiple + // SSRCs. + var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(obj) { + return obj.attribute === 'cname'; + })[0]; + if (remoteSsrc) { + rtcpParameters.cname = remoteSsrc.value; + rtcpParameters.ssrc = remoteSsrc.ssrc; + } + + // Edge uses the compound attribute instead of reducedSize + // compound is !reducedSize + var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize'); + rtcpParameters.reducedSize = rsize.length > 0; + rtcpParameters.compound = rsize.length === 0; + + // parses the rtcp-mux attrіbute. + // Note that Edge does not support unmuxed RTCP. + var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux'); + rtcpParameters.mux = mux.length > 0; + + return rtcpParameters; +}; + +// parses either a=msid: or a=ssrc:... msid lines and returns +// the id of the MediaStream and MediaStreamTrack. +SDPUtils.parseMsid = function(mediaSection) { + var parts; + var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:'); + if (spec.length === 1) { + parts = spec[0].substr(7).split(' '); + return {stream: parts[0], track: parts[1]}; + } + var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(parts) { + return parts.attribute === 'msid'; + }); + if (planB.length > 0) { + parts = planB[0].value.split(' '); + return {stream: parts[0], track: parts[1]}; + } +}; + +SDPUtils.writeSessionBoilerplate = function() { + // FIXME: sess-id should be an NTP timestamp. + return 'v=0\r\n' + + 'o=thisisadapterortc 8169639915646943137 2 IN IP4 127.0.0.1\r\n' + + 's=-\r\n' + + 't=0 0\r\n'; +}; + +SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) { + var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); + + // Map ICE parameters (ufrag, pwd) to SDP. + sdp += SDPUtils.writeIceParameters( + transceiver.iceGatherer.getLocalParameters()); + + // Map DTLS parameters to SDP. + sdp += SDPUtils.writeDtlsParameters( + transceiver.dtlsTransport.getLocalParameters(), + type === 'offer' ? 'actpass' : 'active'); + + sdp += 'a=mid:' + transceiver.mid + '\r\n'; + + if (transceiver.direction) { + sdp += 'a=' + transceiver.direction + '\r\n'; + } else if (transceiver.rtpSender && transceiver.rtpReceiver) { + sdp += 'a=sendrecv\r\n'; + } else if (transceiver.rtpSender) { + sdp += 'a=sendonly\r\n'; + } else if (transceiver.rtpReceiver) { + sdp += 'a=recvonly\r\n'; + } else { + sdp += 'a=inactive\r\n'; + } + + if (transceiver.rtpSender) { + // spec. + var msid = 'msid:' + stream.id + ' ' + + transceiver.rtpSender.track.id + '\r\n'; + sdp += 'a=' + msid; + + // for Chrome. + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + + ' ' + msid; + if (transceiver.sendEncodingParameters[0].rtx) { + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + + ' ' + msid; + sdp += 'a=ssrc-group:FID ' + + transceiver.sendEncodingParameters[0].ssrc + ' ' + + transceiver.sendEncodingParameters[0].rtx.ssrc + + '\r\n'; + } + } + // FIXME: this should be written by writeRtpDescription. + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + + ' cname:' + SDPUtils.localCName + '\r\n'; + if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) { + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + + ' cname:' + SDPUtils.localCName + '\r\n'; + } + return sdp; +}; + +// Gets the direction from the mediaSection or the sessionpart. +SDPUtils.getDirection = function(mediaSection, sessionpart) { + // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv. + var lines = SDPUtils.splitLines(mediaSection); + for (var i = 0; i < lines.length; i++) { + switch (lines[i]) { + case 'a=sendrecv': + case 'a=sendonly': + case 'a=recvonly': + case 'a=inactive': + return lines[i].substr(2); + default: + // FIXME: What should happen here? + } + } + if (sessionpart) { + return SDPUtils.getDirection(sessionpart); + } + return 'sendrecv'; +}; + +SDPUtils.getKind = function(mediaSection) { + var lines = SDPUtils.splitLines(mediaSection); + var mline = lines[0].split(' '); + return mline[0].substr(2); +}; + +SDPUtils.isRejected = function(mediaSection) { + return mediaSection.split(' ', 2)[1] === '0'; +}; + +// Expose public methods. +module.exports = SDPUtils; + +},{}],117:[function(require,module,exports){ +/** + * Convert array of 16 byte values to UUID string format of the form: + * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX + */ +var byteToHex = []; +for (var i = 0; i < 256; ++i) { + byteToHex[i] = (i + 0x100).toString(16).substr(1); +} + +function bytesToUuid(buf, offset) { + var i = offset || 0; + var bth = byteToHex; + // join used to fix memory issue caused by concatenation: https://bugs.chromium.org/p/v8/issues/detail?id=3175#c4 + return ([bth[buf[i++]], bth[buf[i++]], + bth[buf[i++]], bth[buf[i++]], '-', + bth[buf[i++]], bth[buf[i++]], '-', + bth[buf[i++]], bth[buf[i++]], '-', + bth[buf[i++]], bth[buf[i++]], '-', + bth[buf[i++]], bth[buf[i++]], + bth[buf[i++]], bth[buf[i++]], + bth[buf[i++]], bth[buf[i++]]]).join(''); +} + +module.exports = bytesToUuid; + +},{}],118:[function(require,module,exports){ +// Unique ID creation requires a high quality random # generator. In the +// browser this is a little complicated due to unknown quality of Math.random() +// and inconsistent support for the `crypto` API. We do the best we can via +// feature-detection + +// getRandomValues needs to be invoked in a context where "this" is a Crypto +// implementation. Also, find the complete implementation of crypto on IE11. +var getRandomValues = (typeof(crypto) != 'undefined' && crypto.getRandomValues && crypto.getRandomValues.bind(crypto)) || + (typeof(msCrypto) != 'undefined' && typeof window.msCrypto.getRandomValues == 'function' && msCrypto.getRandomValues.bind(msCrypto)); + +if (getRandomValues) { + // WHATWG crypto RNG - http://wiki.whatwg.org/wiki/Crypto + var rnds8 = new Uint8Array(16); // eslint-disable-line no-undef + + module.exports = function whatwgRNG() { + getRandomValues(rnds8); + return rnds8; + }; +} else { + // Math.random()-based (RNG) + // + // If all else fails, use Math.random(). It's fast, but is of unspecified + // quality. + var rnds = new Array(16); + + module.exports = function mathRNG() { + for (var i = 0, r; i < 16; i++) { + if ((i & 0x03) === 0) r = Math.random() * 0x100000000; + rnds[i] = r >>> ((i & 0x03) << 3) & 0xff; + } + + return rnds; + }; +} + +},{}],119:[function(require,module,exports){ +var rng = require('./lib/rng'); +var bytesToUuid = require('./lib/bytesToUuid'); + +function v4(options, buf, offset) { + var i = buf && offset || 0; + + if (typeof(options) == 'string') { + buf = options === 'binary' ? new Array(16) : null; + options = null; + } + options = options || {}; + + var rnds = options.random || (options.rng || rng)(); + + // Per 4.4, set bits for version and `clock_seq_hi_and_reserved` + rnds[6] = (rnds[6] & 0x0f) | 0x40; + rnds[8] = (rnds[8] & 0x3f) | 0x80; + + // Copy bytes to buffer, if provided + if (buf) { + for (var ii = 0; ii < 16; ++ii) { + buf[i + ii] = rnds[ii]; + } + } + + return buf || bytesToUuid(rnds); +} + +module.exports = v4; + +},{"./lib/bytesToUuid":117,"./lib/rng":118}],120:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ + +'use strict'; + +// Shimming starts here. +(function() { + // Utils. + var logging = require('./utils').log; + var browserDetails = require('./utils').browserDetails; + // Export to the adapter global object visible in the browser. + module.exports.browserDetails = browserDetails; + module.exports.extractVersion = require('./utils').extractVersion; + module.exports.disableLog = require('./utils').disableLog; + + // Uncomment the line below if you want logging to occur, including logging + // for the switch statement below. Can also be turned on in the browser via + // adapter.disableLog(false), but then logging from the switch statement below + // will not appear. + // require('./utils').disableLog(false); + + // Browser shims. + var chromeShim = require('./chrome/chrome_shim') || null; + var edgeShim = require('./edge/edge_shim') || null; + var firefoxShim = require('./firefox/firefox_shim') || null; + var safariShim = require('./safari/safari_shim') || null; + + // Shim browser if found. + switch (browserDetails.browser) { + case 'opera': // fallthrough as it uses chrome shims + case 'chrome': + if (!chromeShim || !chromeShim.shimPeerConnection) { + logging('Chrome shim is not included in this adapter release.'); + return; + } + logging('adapter.js shimming chrome.'); + // Export to the adapter global object visible in the browser. + module.exports.browserShim = chromeShim; + + chromeShim.shimGetUserMedia(); + chromeShim.shimMediaStream(); + chromeShim.shimSourceObject(); + chromeShim.shimPeerConnection(); + chromeShim.shimOnTrack(); + break; + case 'firefox': + if (!firefoxShim || !firefoxShim.shimPeerConnection) { + logging('Firefox shim is not included in this adapter release.'); + return; + } + logging('adapter.js shimming firefox.'); + // Export to the adapter global object visible in the browser. + module.exports.browserShim = firefoxShim; + + firefoxShim.shimGetUserMedia(); + firefoxShim.shimSourceObject(); + firefoxShim.shimPeerConnection(); + firefoxShim.shimOnTrack(); + break; + case 'edge': + if (!edgeShim || !edgeShim.shimPeerConnection) { + logging('MS edge shim is not included in this adapter release.'); + return; + } + logging('adapter.js shimming edge.'); + // Export to the adapter global object visible in the browser. + module.exports.browserShim = edgeShim; + + edgeShim.shimGetUserMedia(); + edgeShim.shimPeerConnection(); + break; + case 'safari': + if (!safariShim) { + logging('Safari shim is not included in this adapter release.'); + return; + } + logging('adapter.js shimming safari.'); + // Export to the adapter global object visible in the browser. + module.exports.browserShim = safariShim; + + safariShim.shimGetUserMedia(); + break; + default: + logging('Unsupported browser!'); + } +})(); + +},{"./chrome/chrome_shim":121,"./edge/edge_shim":123,"./firefox/firefox_shim":125,"./safari/safari_shim":127,"./utils":128}],121:[function(require,module,exports){ + +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; +var logging = require('../utils.js').log; +var browserDetails = require('../utils.js').browserDetails; + +var chromeShim = { + shimMediaStream: function() { + window.MediaStream = window.MediaStream || window.webkitMediaStream; + }, + + shimOnTrack: function() { + if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in + window.RTCPeerConnection.prototype)) { + Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', { + get: function() { + return this._ontrack; + }, + set: function(f) { + var self = this; + if (this._ontrack) { + this.removeEventListener('track', this._ontrack); + this.removeEventListener('addstream', this._ontrackpoly); + } + this.addEventListener('track', this._ontrack = f); + this.addEventListener('addstream', this._ontrackpoly = function(e) { + // onaddstream does not fire when a track is added to an existing + // stream. But stream.onaddtrack is implemented so we use that. + e.stream.addEventListener('addtrack', function(te) { + var event = new Event('track'); + event.track = te.track; + event.receiver = {track: te.track}; + event.streams = [e.stream]; + self.dispatchEvent(event); + }); + e.stream.getTracks().forEach(function(track) { + var event = new Event('track'); + event.track = track; + event.receiver = {track: track}; + event.streams = [e.stream]; + this.dispatchEvent(event); + }.bind(this)); + }.bind(this)); + } + }); + } + }, + + shimSourceObject: function() { + if (typeof window === 'object') { + if (window.HTMLMediaElement && + !('srcObject' in window.HTMLMediaElement.prototype)) { + // Shim the srcObject property, once, when HTMLMediaElement is found. + Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', { + get: function() { + return this._srcObject; + }, + set: function(stream) { + var self = this; + // Use _srcObject as a private property for this shim + this._srcObject = stream; + if (this.src) { + URL.revokeObjectURL(this.src); + } + + if (!stream) { + this.src = ''; + return; + } + this.src = URL.createObjectURL(stream); + // We need to recreate the blob url when a track is added or + // removed. Doing it manually since we want to avoid a recursion. + stream.addEventListener('addtrack', function() { + if (self.src) { + URL.revokeObjectURL(self.src); + } + self.src = URL.createObjectURL(stream); + }); + stream.addEventListener('removetrack', function() { + if (self.src) { + URL.revokeObjectURL(self.src); + } + self.src = URL.createObjectURL(stream); + }); + } + }); + } + } + }, + + shimPeerConnection: function() { + // The RTCPeerConnection object. + window.RTCPeerConnection = function(pcConfig, pcConstraints) { + // Translate iceTransportPolicy to iceTransports, + // see https://code.google.com/p/webrtc/issues/detail?id=4869 + logging('PeerConnection'); + if (pcConfig && pcConfig.iceTransportPolicy) { + pcConfig.iceTransports = pcConfig.iceTransportPolicy; + } + + var pc = new webkitRTCPeerConnection(pcConfig, pcConstraints); + var origGetStats = pc.getStats.bind(pc); + pc.getStats = function(selector, successCallback, errorCallback) { + var self = this; + var args = arguments; + + // If selector is a function then we are in the old style stats so just + // pass back the original getStats format to avoid breaking old users. + if (arguments.length > 0 && typeof selector === 'function') { + return origGetStats(selector, successCallback); + } + + var fixChromeStats_ = function(response) { + var standardReport = {}; + var reports = response.result(); + reports.forEach(function(report) { + var standardStats = { + id: report.id, + timestamp: report.timestamp, + type: report.type + }; + report.names().forEach(function(name) { + standardStats[name] = report.stat(name); + }); + standardReport[standardStats.id] = standardStats; + }); + + return standardReport; + }; + + // shim getStats with maplike support + var makeMapStats = function(stats, legacyStats) { + var map = new Map(Object.keys(stats).map(function(key) { + return[key, stats[key]]; + })); + legacyStats = legacyStats || stats; + Object.keys(legacyStats).forEach(function(key) { + map[key] = legacyStats[key]; + }); + return map; + }; + + if (arguments.length >= 2) { + var successCallbackWrapper_ = function(response) { + args[1](makeMapStats(fixChromeStats_(response))); + }; + + return origGetStats.apply(this, [successCallbackWrapper_, + arguments[0]]); + } + + // promise-support + return new Promise(function(resolve, reject) { + if (args.length === 1 && typeof selector === 'object') { + origGetStats.apply(self, [ + function(response) { + resolve(makeMapStats(fixChromeStats_(response))); + }, reject]); + } else { + // Preserve legacy chrome stats only on legacy access of stats obj + origGetStats.apply(self, [ + function(response) { + resolve(makeMapStats(fixChromeStats_(response), + response.result())); + }, reject]); + } + }).then(successCallback, errorCallback); + }; + + return pc; + }; + window.RTCPeerConnection.prototype = webkitRTCPeerConnection.prototype; + + // wrap static methods. Currently just generateCertificate. + if (webkitRTCPeerConnection.generateCertificate) { + Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { + get: function() { + return webkitRTCPeerConnection.generateCertificate; + } + }); + } + + ['createOffer', 'createAnswer'].forEach(function(method) { + var nativeMethod = webkitRTCPeerConnection.prototype[method]; + webkitRTCPeerConnection.prototype[method] = function() { + var self = this; + if (arguments.length < 1 || (arguments.length === 1 && + typeof arguments[0] === 'object')) { + var opts = arguments.length === 1 ? arguments[0] : undefined; + return new Promise(function(resolve, reject) { + nativeMethod.apply(self, [resolve, reject, opts]); + }); + } + return nativeMethod.apply(this, arguments); + }; + }); + + // add promise support -- natively available in Chrome 51 + if (browserDetails.version < 51) { + ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] + .forEach(function(method) { + var nativeMethod = webkitRTCPeerConnection.prototype[method]; + webkitRTCPeerConnection.prototype[method] = function() { + var args = arguments; + var self = this; + var promise = new Promise(function(resolve, reject) { + nativeMethod.apply(self, [args[0], resolve, reject]); + }); + if (args.length < 2) { + return promise; + } + return promise.then(function() { + args[1].apply(null, []); + }, + function(err) { + if (args.length >= 3) { + args[2].apply(null, [err]); + } + }); + }; + }); + } + + // shim implicit creation of RTCSessionDescription/RTCIceCandidate + ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] + .forEach(function(method) { + var nativeMethod = webkitRTCPeerConnection.prototype[method]; + webkitRTCPeerConnection.prototype[method] = function() { + arguments[0] = new ((method === 'addIceCandidate') ? + RTCIceCandidate : RTCSessionDescription)(arguments[0]); + return nativeMethod.apply(this, arguments); + }; + }); + + // support for addIceCandidate(null) + var nativeAddIceCandidate = + RTCPeerConnection.prototype.addIceCandidate; + RTCPeerConnection.prototype.addIceCandidate = function() { + if (arguments[0] === null) { + if (arguments[1]) { + arguments[1].apply(null); + } + return Promise.resolve(); + } + return nativeAddIceCandidate.apply(this, arguments); + }; + } +}; + + +// Expose public methods. +module.exports = { + shimMediaStream: chromeShim.shimMediaStream, + shimOnTrack: chromeShim.shimOnTrack, + shimSourceObject: chromeShim.shimSourceObject, + shimPeerConnection: chromeShim.shimPeerConnection, + shimGetUserMedia: require('./getusermedia') +}; + +},{"../utils.js":128,"./getusermedia":122}],122:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; +var logging = require('../utils.js').log; + +// Expose public methods. +module.exports = function() { + var constraintsToChrome_ = function(c) { + if (typeof c !== 'object' || c.mandatory || c.optional) { + return c; + } + var cc = {}; + Object.keys(c).forEach(function(key) { + if (key === 'require' || key === 'advanced' || key === 'mediaSource') { + return; + } + var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]}; + if (r.exact !== undefined && typeof r.exact === 'number') { + r.min = r.max = r.exact; + } + var oldname_ = function(prefix, name) { + if (prefix) { + return prefix + name.charAt(0).toUpperCase() + name.slice(1); + } + return (name === 'deviceId') ? 'sourceId' : name; + }; + if (r.ideal !== undefined) { + cc.optional = cc.optional || []; + var oc = {}; + if (typeof r.ideal === 'number') { + oc[oldname_('min', key)] = r.ideal; + cc.optional.push(oc); + oc = {}; + oc[oldname_('max', key)] = r.ideal; + cc.optional.push(oc); + } else { + oc[oldname_('', key)] = r.ideal; + cc.optional.push(oc); + } + } + if (r.exact !== undefined && typeof r.exact !== 'number') { + cc.mandatory = cc.mandatory || {}; + cc.mandatory[oldname_('', key)] = r.exact; + } else { + ['min', 'max'].forEach(function(mix) { + if (r[mix] !== undefined) { + cc.mandatory = cc.mandatory || {}; + cc.mandatory[oldname_(mix, key)] = r[mix]; + } + }); + } + }); + if (c.advanced) { + cc.optional = (cc.optional || []).concat(c.advanced); + } + return cc; + }; + + var shimConstraints_ = function(constraints, func) { + constraints = JSON.parse(JSON.stringify(constraints)); + if (constraints && constraints.audio) { + constraints.audio = constraintsToChrome_(constraints.audio); + } + if (constraints && typeof constraints.video === 'object') { + // Shim facingMode for mobile, where it defaults to "user". + var face = constraints.video.facingMode; + face = face && ((typeof face === 'object') ? face : {ideal: face}); + + if ((face && (face.exact === 'user' || face.exact === 'environment' || + face.ideal === 'user' || face.ideal === 'environment')) && + !(navigator.mediaDevices.getSupportedConstraints && + navigator.mediaDevices.getSupportedConstraints().facingMode)) { + delete constraints.video.facingMode; + if (face.exact === 'environment' || face.ideal === 'environment') { + // Look for "back" in label, or use last cam (typically back cam). + return navigator.mediaDevices.enumerateDevices() + .then(function(devices) { + devices = devices.filter(function(d) { + return d.kind === 'videoinput'; + }); + var back = devices.find(function(d) { + return d.label.toLowerCase().indexOf('back') !== -1; + }) || (devices.length && devices[devices.length - 1]); + if (back) { + constraints.video.deviceId = face.exact ? {exact: back.deviceId} : + {ideal: back.deviceId}; + } + constraints.video = constraintsToChrome_(constraints.video); + logging('chrome: ' + JSON.stringify(constraints)); + return func(constraints); + }); + } + } + constraints.video = constraintsToChrome_(constraints.video); + } + logging('chrome: ' + JSON.stringify(constraints)); + return func(constraints); + }; + + var shimError_ = function(e) { + return { + name: { + PermissionDeniedError: 'NotAllowedError', + ConstraintNotSatisfiedError: 'OverconstrainedError' + }[e.name] || e.name, + message: e.message, + constraint: e.constraintName, + toString: function() { + return this.name + (this.message && ': ') + this.message; + } + }; + }; + + var getUserMedia_ = function(constraints, onSuccess, onError) { + shimConstraints_(constraints, function(c) { + navigator.webkitGetUserMedia(c, onSuccess, function(e) { + onError(shimError_(e)); + }); + }); + }; + + navigator.getUserMedia = getUserMedia_; + + // Returns the result of getUserMedia as a Promise. + var getUserMediaPromise_ = function(constraints) { + return new Promise(function(resolve, reject) { + navigator.getUserMedia(constraints, resolve, reject); + }); + }; + + if (!navigator.mediaDevices) { + navigator.mediaDevices = { + getUserMedia: getUserMediaPromise_, + enumerateDevices: function() { + return new Promise(function(resolve) { + var kinds = {audio: 'audioinput', video: 'videoinput'}; + return MediaStreamTrack.getSources(function(devices) { + resolve(devices.map(function(device) { + return {label: device.label, + kind: kinds[device.kind], + deviceId: device.id, + groupId: ''}; + })); + }); + }); + } + }; + } + + // A shim for getUserMedia method on the mediaDevices object. + // TODO(KaptenJansson) remove once implemented in Chrome stable. + if (!navigator.mediaDevices.getUserMedia) { + navigator.mediaDevices.getUserMedia = function(constraints) { + return getUserMediaPromise_(constraints); + }; + } else { + // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia + // function which returns a Promise, it does not accept spec-style + // constraints. + var origGetUserMedia = navigator.mediaDevices.getUserMedia. + bind(navigator.mediaDevices); + navigator.mediaDevices.getUserMedia = function(cs) { + return shimConstraints_(cs, function(c) { + return origGetUserMedia(c).then(function(stream) { + if (c.audio && !stream.getAudioTracks().length || + c.video && !stream.getVideoTracks().length) { + stream.getTracks().forEach(function(track) { + track.stop(); + }); + throw new DOMException('', 'NotFoundError'); + } + return stream; + }, function(e) { + return Promise.reject(shimError_(e)); + }); + }); + }; + } + + // Dummy devicechange event methods. + // TODO(KaptenJansson) remove once implemented in Chrome stable. + if (typeof navigator.mediaDevices.addEventListener === 'undefined') { + navigator.mediaDevices.addEventListener = function() { + logging('Dummy mediaDevices.addEventListener called.'); + }; + } + if (typeof navigator.mediaDevices.removeEventListener === 'undefined') { + navigator.mediaDevices.removeEventListener = function() { + logging('Dummy mediaDevices.removeEventListener called.'); + }; + } +}; + +},{"../utils.js":128}],123:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +var SDPUtils = require('sdp'); +var browserDetails = require('../utils').browserDetails; + +var edgeShim = { + shimPeerConnection: function() { + if (window.RTCIceGatherer) { + // ORTC defines an RTCIceCandidate object but no constructor. + // Not implemented in Edge. + if (!window.RTCIceCandidate) { + window.RTCIceCandidate = function(args) { + return args; + }; + } + // ORTC does not have a session description object but + // other browsers (i.e. Chrome) that will support both PC and ORTC + // in the future might have this defined already. + if (!window.RTCSessionDescription) { + window.RTCSessionDescription = function(args) { + return args; + }; + } + // this adds an additional event listener to MediaStrackTrack that signals + // when a tracks enabled property was changed. + var origMSTEnabled = Object.getOwnPropertyDescriptor( + MediaStreamTrack.prototype, 'enabled'); + Object.defineProperty(MediaStreamTrack.prototype, 'enabled', { + set: function(value) { + origMSTEnabled.set.call(this, value); + var ev = new Event('enabled'); + ev.enabled = value; + this.dispatchEvent(ev); + } + }); + } + + window.RTCPeerConnection = function(config) { + var self = this; + + var _eventTarget = document.createDocumentFragment(); + ['addEventListener', 'removeEventListener', 'dispatchEvent'] + .forEach(function(method) { + self[method] = _eventTarget[method].bind(_eventTarget); + }); + + this.onicecandidate = null; + this.onaddstream = null; + this.ontrack = null; + this.onremovestream = null; + this.onsignalingstatechange = null; + this.oniceconnectionstatechange = null; + this.onnegotiationneeded = null; + this.ondatachannel = null; + + this.localStreams = []; + this.remoteStreams = []; + this.getLocalStreams = function() { + return self.localStreams; + }; + this.getRemoteStreams = function() { + return self.remoteStreams; + }; + + this.localDescription = new RTCSessionDescription({ + type: '', + sdp: '' + }); + this.remoteDescription = new RTCSessionDescription({ + type: '', + sdp: '' + }); + this.signalingState = 'stable'; + this.iceConnectionState = 'new'; + this.iceGatheringState = 'new'; + + this.iceOptions = { + gatherPolicy: 'all', + iceServers: [] + }; + if (config && config.iceTransportPolicy) { + switch (config.iceTransportPolicy) { + case 'all': + case 'relay': + this.iceOptions.gatherPolicy = config.iceTransportPolicy; + break; + case 'none': + // FIXME: remove once implementation and spec have added this. + throw new TypeError('iceTransportPolicy "none" not supported'); + default: + // don't set iceTransportPolicy. + break; + } + } + this.usingBundle = config && config.bundlePolicy === 'max-bundle'; + + if (config && config.iceServers) { + // Edge does not like + // 1) stun: + // 2) turn: that does not have all of turn:host:port?transport=udp + // 3) turn: with ipv6 addresses + var iceServers = JSON.parse(JSON.stringify(config.iceServers)); + this.iceOptions.iceServers = iceServers.filter(function(server) { + if (server && server.urls) { + var urls = server.urls; + if (typeof urls === 'string') { + urls = [urls]; + } + urls = urls.filter(function(url) { + return (url.indexOf('turn:') === 0 && + url.indexOf('transport=udp') !== -1 && + url.indexOf('turn:[') === -1) || + (url.indexOf('stun:') === 0 && + browserDetails.version >= 14393); + })[0]; + return !!urls; + } + return false; + }); + } + this._config = config; + + // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ... + // everything that is needed to describe a SDP m-line. + this.transceivers = []; + + // since the iceGatherer is currently created in createOffer but we + // must not emit candidates until after setLocalDescription we buffer + // them in this array. + this._localIceCandidatesBuffer = []; + }; + + window.RTCPeerConnection.prototype._emitBufferedCandidates = function() { + var self = this; + var sections = SDPUtils.splitSections(self.localDescription.sdp); + // FIXME: need to apply ice candidates in a way which is async but + // in-order + this._localIceCandidatesBuffer.forEach(function(event) { + var end = !event.candidate || Object.keys(event.candidate).length === 0; + if (end) { + for (var j = 1; j < sections.length; j++) { + if (sections[j].indexOf('\r\na=end-of-candidates\r\n') === -1) { + sections[j] += 'a=end-of-candidates\r\n'; + } + } + } else if (event.candidate.candidate.indexOf('typ endOfCandidates') + === -1) { + sections[event.candidate.sdpMLineIndex + 1] += + 'a=' + event.candidate.candidate + '\r\n'; + } + self.localDescription.sdp = sections.join(''); + self.dispatchEvent(event); + if (self.onicecandidate !== null) { + self.onicecandidate(event); + } + if (!event.candidate && self.iceGatheringState !== 'complete') { + var complete = self.transceivers.every(function(transceiver) { + return transceiver.iceGatherer && + transceiver.iceGatherer.state === 'completed'; + }); + if (complete) { + self.iceGatheringState = 'complete'; + } + } + }); + this._localIceCandidatesBuffer = []; + }; + + window.RTCPeerConnection.prototype.getConfiguration = function() { + return this._config; + }; + + window.RTCPeerConnection.prototype.addStream = function(stream) { + // Clone is necessary for local demos mostly, attaching directly + // to two different senders does not work (build 10547). + var clonedStream = stream.clone(); + stream.getTracks().forEach(function(track, idx) { + var clonedTrack = clonedStream.getTracks()[idx]; + track.addEventListener('enabled', function(event) { + clonedTrack.enabled = event.enabled; + }); + }); + this.localStreams.push(clonedStream); + this._maybeFireNegotiationNeeded(); + }; + + window.RTCPeerConnection.prototype.removeStream = function(stream) { + var idx = this.localStreams.indexOf(stream); + if (idx > -1) { + this.localStreams.splice(idx, 1); + this._maybeFireNegotiationNeeded(); + } + }; + + window.RTCPeerConnection.prototype.getSenders = function() { + return this.transceivers.filter(function(transceiver) { + return !!transceiver.rtpSender; + }) + .map(function(transceiver) { + return transceiver.rtpSender; + }); + }; + + window.RTCPeerConnection.prototype.getReceivers = function() { + return this.transceivers.filter(function(transceiver) { + return !!transceiver.rtpReceiver; + }) + .map(function(transceiver) { + return transceiver.rtpReceiver; + }); + }; + + // Determines the intersection of local and remote capabilities. + window.RTCPeerConnection.prototype._getCommonCapabilities = + function(localCapabilities, remoteCapabilities) { + var commonCapabilities = { + codecs: [], + headerExtensions: [], + fecMechanisms: [] + }; + localCapabilities.codecs.forEach(function(lCodec) { + for (var i = 0; i < remoteCapabilities.codecs.length; i++) { + var rCodec = remoteCapabilities.codecs[i]; + if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() && + lCodec.clockRate === rCodec.clockRate) { + // number of channels is the highest common number of channels + rCodec.numChannels = Math.min(lCodec.numChannels, + rCodec.numChannels); + // push rCodec so we reply with offerer payload type + commonCapabilities.codecs.push(rCodec); + + // determine common feedback mechanisms + rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) { + for (var j = 0; j < lCodec.rtcpFeedback.length; j++) { + if (lCodec.rtcpFeedback[j].type === fb.type && + lCodec.rtcpFeedback[j].parameter === fb.parameter) { + return true; + } + } + return false; + }); + // FIXME: also need to determine .parameters + // see https://github.com/openpeer/ortc/issues/569 + break; + } + } + }); + + localCapabilities.headerExtensions + .forEach(function(lHeaderExtension) { + for (var i = 0; i < remoteCapabilities.headerExtensions.length; + i++) { + var rHeaderExtension = remoteCapabilities.headerExtensions[i]; + if (lHeaderExtension.uri === rHeaderExtension.uri) { + commonCapabilities.headerExtensions.push(rHeaderExtension); + break; + } + } + }); + + // FIXME: fecMechanisms + return commonCapabilities; + }; + + // Create ICE gatherer, ICE transport and DTLS transport. + window.RTCPeerConnection.prototype._createIceAndDtlsTransports = + function(mid, sdpMLineIndex) { + var self = this; + var iceGatherer = new RTCIceGatherer(self.iceOptions); + var iceTransport = new RTCIceTransport(iceGatherer); + iceGatherer.onlocalcandidate = function(evt) { + var event = new Event('icecandidate'); + event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex}; + + var cand = evt.candidate; + var end = !cand || Object.keys(cand).length === 0; + // Edge emits an empty object for RTCIceCandidateComplete‥ + if (end) { + // polyfill since RTCIceGatherer.state is not implemented in + // Edge 10547 yet. + if (iceGatherer.state === undefined) { + iceGatherer.state = 'completed'; + } + + // Emit a candidate with type endOfCandidates to make the samples + // work. Edge requires addIceCandidate with this empty candidate + // to start checking. The real solution is to signal + // end-of-candidates to the other side when getting the null + // candidate but some apps (like the samples) don't do that. + event.candidate.candidate = + 'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates'; + } else { + // RTCIceCandidate doesn't have a component, needs to be added + cand.component = iceTransport.component === 'RTCP' ? 2 : 1; + event.candidate.candidate = SDPUtils.writeCandidate(cand); + } + + // update local description. + var sections = SDPUtils.splitSections(self.localDescription.sdp); + if (event.candidate.candidate.indexOf('typ endOfCandidates') + === -1) { + sections[event.candidate.sdpMLineIndex + 1] += + 'a=' + event.candidate.candidate + '\r\n'; + } else { + sections[event.candidate.sdpMLineIndex + 1] += + 'a=end-of-candidates\r\n'; + } + self.localDescription.sdp = sections.join(''); + + var complete = self.transceivers.every(function(transceiver) { + return transceiver.iceGatherer && + transceiver.iceGatherer.state === 'completed'; + }); + + // Emit candidate if localDescription is set. + // Also emits null candidate when all gatherers are complete. + switch (self.iceGatheringState) { + case 'new': + self._localIceCandidatesBuffer.push(event); + if (end && complete) { + self._localIceCandidatesBuffer.push( + new Event('icecandidate')); + } + break; + case 'gathering': + self._emitBufferedCandidates(); + self.dispatchEvent(event); + if (self.onicecandidate !== null) { + self.onicecandidate(event); + } + if (complete) { + self.dispatchEvent(new Event('icecandidate')); + if (self.onicecandidate !== null) { + self.onicecandidate(new Event('icecandidate')); + } + self.iceGatheringState = 'complete'; + } + break; + case 'complete': + // should not happen... currently! + break; + default: // no-op. + break; + } + }; + iceTransport.onicestatechange = function() { + self._updateConnectionState(); + }; + + var dtlsTransport = new RTCDtlsTransport(iceTransport); + dtlsTransport.ondtlsstatechange = function() { + self._updateConnectionState(); + }; + dtlsTransport.onerror = function() { + // onerror does not set state to failed by itself. + dtlsTransport.state = 'failed'; + self._updateConnectionState(); + }; + + return { + iceGatherer: iceGatherer, + iceTransport: iceTransport, + dtlsTransport: dtlsTransport + }; + }; + + // Start the RTP Sender and Receiver for a transceiver. + window.RTCPeerConnection.prototype._transceive = function(transceiver, + send, recv) { + var params = this._getCommonCapabilities(transceiver.localCapabilities, + transceiver.remoteCapabilities); + if (send && transceiver.rtpSender) { + params.encodings = transceiver.sendEncodingParameters; + params.rtcp = { + cname: SDPUtils.localCName + }; + if (transceiver.recvEncodingParameters.length) { + params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc; + } + transceiver.rtpSender.send(params); + } + if (recv && transceiver.rtpReceiver) { + // remove RTX field in Edge 14942 + if (transceiver.kind === 'video' + && transceiver.recvEncodingParameters) { + transceiver.recvEncodingParameters.forEach(function(p) { + delete p.rtx; + }); + } + params.encodings = transceiver.recvEncodingParameters; + params.rtcp = { + cname: transceiver.cname + }; + if (transceiver.sendEncodingParameters.length) { + params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc; + } + transceiver.rtpReceiver.receive(params); + } + }; + + window.RTCPeerConnection.prototype.setLocalDescription = + function(description) { + var self = this; + var sections; + var sessionpart; + if (description.type === 'offer') { + // FIXME: What was the purpose of this empty if statement? + // if (!this._pendingOffer) { + // } else { + if (this._pendingOffer) { + // VERY limited support for SDP munging. Limited to: + // * changing the order of codecs + sections = SDPUtils.splitSections(description.sdp); + sessionpart = sections.shift(); + sections.forEach(function(mediaSection, sdpMLineIndex) { + var caps = SDPUtils.parseRtpParameters(mediaSection); + self._pendingOffer[sdpMLineIndex].localCapabilities = caps; + }); + this.transceivers = this._pendingOffer; + delete this._pendingOffer; + } + } else if (description.type === 'answer') { + sections = SDPUtils.splitSections(self.remoteDescription.sdp); + sessionpart = sections.shift(); + var isIceLite = SDPUtils.matchPrefix(sessionpart, + 'a=ice-lite').length > 0; + sections.forEach(function(mediaSection, sdpMLineIndex) { + var transceiver = self.transceivers[sdpMLineIndex]; + var iceGatherer = transceiver.iceGatherer; + var iceTransport = transceiver.iceTransport; + var dtlsTransport = transceiver.dtlsTransport; + var localCapabilities = transceiver.localCapabilities; + var remoteCapabilities = transceiver.remoteCapabilities; + + var rejected = mediaSection.split('\n', 1)[0] + .split(' ', 2)[1] === '0'; + + if (!rejected && !transceiver.isDatachannel) { + var remoteIceParameters = SDPUtils.getIceParameters( + mediaSection, sessionpart); + if (isIceLite) { + var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:') + .map(function(cand) { + return SDPUtils.parseCandidate(cand); + }) + .filter(function(cand) { + return cand.component === '1'; + }); + // ice-lite only includes host candidates in the SDP so we can + // use setRemoteCandidates (which implies an + // RTCIceCandidateComplete) + if (cands.length) { + iceTransport.setRemoteCandidates(cands); + } + } + var remoteDtlsParameters = SDPUtils.getDtlsParameters( + mediaSection, sessionpart); + if (isIceLite) { + remoteDtlsParameters.role = 'server'; + } + + if (!self.usingBundle || sdpMLineIndex === 0) { + iceTransport.start(iceGatherer, remoteIceParameters, + isIceLite ? 'controlling' : 'controlled'); + dtlsTransport.start(remoteDtlsParameters); + } + + // Calculate intersection of capabilities. + var params = self._getCommonCapabilities(localCapabilities, + remoteCapabilities); + + // Start the RTCRtpSender. The RTCRtpReceiver for this + // transceiver has already been started in setRemoteDescription. + self._transceive(transceiver, + params.codecs.length > 0, + false); + } + }); + } + + this.localDescription = { + type: description.type, + sdp: description.sdp + }; + switch (description.type) { + case 'offer': + this._updateSignalingState('have-local-offer'); + break; + case 'answer': + this._updateSignalingState('stable'); + break; + default: + throw new TypeError('unsupported type "' + description.type + + '"'); + } + + // If a success callback was provided, emit ICE candidates after it + // has been executed. Otherwise, emit callback after the Promise is + // resolved. + var hasCallback = arguments.length > 1 && + typeof arguments[1] === 'function'; + if (hasCallback) { + var cb = arguments[1]; + window.setTimeout(function() { + cb(); + if (self.iceGatheringState === 'new') { + self.iceGatheringState = 'gathering'; + } + self._emitBufferedCandidates(); + }, 0); + } + var p = Promise.resolve(); + p.then(function() { + if (!hasCallback) { + if (self.iceGatheringState === 'new') { + self.iceGatheringState = 'gathering'; + } + // Usually candidates will be emitted earlier. + window.setTimeout(self._emitBufferedCandidates.bind(self), 500); + } + }); + return p; + }; + + window.RTCPeerConnection.prototype.setRemoteDescription = + function(description) { + var self = this; + var stream = new MediaStream(); + var receiverList = []; + var sections = SDPUtils.splitSections(description.sdp); + var sessionpart = sections.shift(); + var isIceLite = SDPUtils.matchPrefix(sessionpart, + 'a=ice-lite').length > 0; + this.usingBundle = SDPUtils.matchPrefix(sessionpart, + 'a=group:BUNDLE ').length > 0; + sections.forEach(function(mediaSection, sdpMLineIndex) { + var lines = SDPUtils.splitLines(mediaSection); + var mline = lines[0].substr(2).split(' '); + var kind = mline[0]; + var rejected = mline[1] === '0'; + var direction = SDPUtils.getDirection(mediaSection, sessionpart); + + var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:'); + if (mid.length) { + mid = mid[0].substr(6); + } else { + mid = SDPUtils.generateIdentifier(); + } + + // Reject datachannels which are not implemented yet. + if (kind === 'application' && mline[2] === 'DTLS/SCTP') { + self.transceivers[sdpMLineIndex] = { + mid: mid, + isDatachannel: true + }; + return; + } + + var transceiver; + var iceGatherer; + var iceTransport; + var dtlsTransport; + var rtpSender; + var rtpReceiver; + var sendEncodingParameters; + var recvEncodingParameters; + var localCapabilities; + + var track; + // FIXME: ensure the mediaSection has rtcp-mux set. + var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection); + var remoteIceParameters; + var remoteDtlsParameters; + if (!rejected) { + remoteIceParameters = SDPUtils.getIceParameters(mediaSection, + sessionpart); + remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection, + sessionpart); + remoteDtlsParameters.role = 'client'; + } + recvEncodingParameters = + SDPUtils.parseRtpEncodingParameters(mediaSection); + + var cname; + // Gets the first SSRC. Note that with RTX there might be multiple + // SSRCs. + var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(obj) { + return obj.attribute === 'cname'; + })[0]; + if (remoteSsrc) { + cname = remoteSsrc.value; + } + + var isComplete = SDPUtils.matchPrefix(mediaSection, + 'a=end-of-candidates', sessionpart).length > 0; + var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:') + .map(function(cand) { + return SDPUtils.parseCandidate(cand); + }) + .filter(function(cand) { + return cand.component === '1'; + }); + if (description.type === 'offer' && !rejected) { + var transports = self.usingBundle && sdpMLineIndex > 0 ? { + iceGatherer: self.transceivers[0].iceGatherer, + iceTransport: self.transceivers[0].iceTransport, + dtlsTransport: self.transceivers[0].dtlsTransport + } : self._createIceAndDtlsTransports(mid, sdpMLineIndex); + + if (isComplete) { + transports.iceTransport.setRemoteCandidates(cands); + } + + localCapabilities = RTCRtpReceiver.getCapabilities(kind); + + // filter RTX until additional stuff needed for RTX is implemented + // in adapter.js + localCapabilities.codecs = localCapabilities.codecs.filter( + function(codec) { + return codec.name !== 'rtx'; + }); + + sendEncodingParameters = [{ + ssrc: (2 * sdpMLineIndex + 2) * 1001 + }]; + + rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind); + + track = rtpReceiver.track; + receiverList.push([track, rtpReceiver]); + // FIXME: not correct when there are multiple streams but that is + // not currently supported in this shim. + stream.addTrack(track); + + // FIXME: look at direction. + if (self.localStreams.length > 0 && + self.localStreams[0].getTracks().length >= sdpMLineIndex) { + var localTrack; + if (kind === 'audio') { + localTrack = self.localStreams[0].getAudioTracks()[0]; + } else if (kind === 'video') { + localTrack = self.localStreams[0].getVideoTracks()[0]; + } + if (localTrack) { + rtpSender = new RTCRtpSender(localTrack, + transports.dtlsTransport); + } + } + + self.transceivers[sdpMLineIndex] = { + iceGatherer: transports.iceGatherer, + iceTransport: transports.iceTransport, + dtlsTransport: transports.dtlsTransport, + localCapabilities: localCapabilities, + remoteCapabilities: remoteCapabilities, + rtpSender: rtpSender, + rtpReceiver: rtpReceiver, + kind: kind, + mid: mid, + cname: cname, + sendEncodingParameters: sendEncodingParameters, + recvEncodingParameters: recvEncodingParameters + }; + // Start the RTCRtpReceiver now. The RTPSender is started in + // setLocalDescription. + self._transceive(self.transceivers[sdpMLineIndex], + false, + direction === 'sendrecv' || direction === 'sendonly'); + } else if (description.type === 'answer' && !rejected) { + transceiver = self.transceivers[sdpMLineIndex]; + iceGatherer = transceiver.iceGatherer; + iceTransport = transceiver.iceTransport; + dtlsTransport = transceiver.dtlsTransport; + rtpSender = transceiver.rtpSender; + rtpReceiver = transceiver.rtpReceiver; + sendEncodingParameters = transceiver.sendEncodingParameters; + localCapabilities = transceiver.localCapabilities; + + self.transceivers[sdpMLineIndex].recvEncodingParameters = + recvEncodingParameters; + self.transceivers[sdpMLineIndex].remoteCapabilities = + remoteCapabilities; + self.transceivers[sdpMLineIndex].cname = cname; + + if ((isIceLite || isComplete) && cands.length) { + iceTransport.setRemoteCandidates(cands); + } + if (!self.usingBundle || sdpMLineIndex === 0) { + iceTransport.start(iceGatherer, remoteIceParameters, + 'controlling'); + dtlsTransport.start(remoteDtlsParameters); + } + + self._transceive(transceiver, + direction === 'sendrecv' || direction === 'recvonly', + direction === 'sendrecv' || direction === 'sendonly'); + + if (rtpReceiver && + (direction === 'sendrecv' || direction === 'sendonly')) { + track = rtpReceiver.track; + receiverList.push([track, rtpReceiver]); + stream.addTrack(track); + } else { + // FIXME: actually the receiver should be created later. + delete transceiver.rtpReceiver; + } + } + }); + + this.remoteDescription = { + type: description.type, + sdp: description.sdp + }; + switch (description.type) { + case 'offer': + this._updateSignalingState('have-remote-offer'); + break; + case 'answer': + this._updateSignalingState('stable'); + break; + default: + throw new TypeError('unsupported type "' + description.type + + '"'); + } + if (stream.getTracks().length) { + self.remoteStreams.push(stream); + window.setTimeout(function() { + var event = new Event('addstream'); + event.stream = stream; + self.dispatchEvent(event); + if (self.onaddstream !== null) { + window.setTimeout(function() { + self.onaddstream(event); + }, 0); + } + + receiverList.forEach(function(item) { + var track = item[0]; + var receiver = item[1]; + var trackEvent = new Event('track'); + trackEvent.track = track; + trackEvent.receiver = receiver; + trackEvent.streams = [stream]; + self.dispatchEvent(event); + if (self.ontrack !== null) { + window.setTimeout(function() { + self.ontrack(trackEvent); + }, 0); + } + }); + }, 0); + } + if (arguments.length > 1 && typeof arguments[1] === 'function') { + window.setTimeout(arguments[1], 0); + } + return Promise.resolve(); + }; + + window.RTCPeerConnection.prototype.close = function() { + this.transceivers.forEach(function(transceiver) { + /* not yet + if (transceiver.iceGatherer) { + transceiver.iceGatherer.close(); + } + */ + if (transceiver.iceTransport) { + transceiver.iceTransport.stop(); + } + if (transceiver.dtlsTransport) { + transceiver.dtlsTransport.stop(); + } + if (transceiver.rtpSender) { + transceiver.rtpSender.stop(); + } + if (transceiver.rtpReceiver) { + transceiver.rtpReceiver.stop(); + } + }); + // FIXME: clean up tracks, local streams, remote streams, etc + this._updateSignalingState('closed'); + }; + + // Update the signaling state. + window.RTCPeerConnection.prototype._updateSignalingState = + function(newState) { + this.signalingState = newState; + var event = new Event('signalingstatechange'); + this.dispatchEvent(event); + if (this.onsignalingstatechange !== null) { + this.onsignalingstatechange(event); + } + }; + + // Determine whether to fire the negotiationneeded event. + window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded = + function() { + // Fire away (for now). + var event = new Event('negotiationneeded'); + this.dispatchEvent(event); + if (this.onnegotiationneeded !== null) { + this.onnegotiationneeded(event); + } + }; + + // Update the connection state. + window.RTCPeerConnection.prototype._updateConnectionState = function() { + var self = this; + var newState; + var states = { + 'new': 0, + closed: 0, + connecting: 0, + checking: 0, + connected: 0, + completed: 0, + failed: 0 + }; + this.transceivers.forEach(function(transceiver) { + states[transceiver.iceTransport.state]++; + states[transceiver.dtlsTransport.state]++; + }); + // ICETransport.completed and connected are the same for this purpose. + states.connected += states.completed; + + newState = 'new'; + if (states.failed > 0) { + newState = 'failed'; + } else if (states.connecting > 0 || states.checking > 0) { + newState = 'connecting'; + } else if (states.disconnected > 0) { + newState = 'disconnected'; + } else if (states.new > 0) { + newState = 'new'; + } else if (states.connected > 0 || states.completed > 0) { + newState = 'connected'; + } + + if (newState !== self.iceConnectionState) { + self.iceConnectionState = newState; + var event = new Event('iceconnectionstatechange'); + this.dispatchEvent(event); + if (this.oniceconnectionstatechange !== null) { + this.oniceconnectionstatechange(event); + } + } + }; + + window.RTCPeerConnection.prototype.createOffer = function() { + var self = this; + if (this._pendingOffer) { + throw new Error('createOffer called while there is a pending offer.'); + } + var offerOptions; + if (arguments.length === 1 && typeof arguments[0] !== 'function') { + offerOptions = arguments[0]; + } else if (arguments.length === 3) { + offerOptions = arguments[2]; + } + + var tracks = []; + var numAudioTracks = 0; + var numVideoTracks = 0; + // Default to sendrecv. + if (this.localStreams.length) { + numAudioTracks = this.localStreams[0].getAudioTracks().length; + numVideoTracks = this.localStreams[0].getVideoTracks().length; + } + // Determine number of audio and video tracks we need to send/recv. + if (offerOptions) { + // Reject Chrome legacy constraints. + if (offerOptions.mandatory || offerOptions.optional) { + throw new TypeError( + 'Legacy mandatory/optional constraints not supported.'); + } + if (offerOptions.offerToReceiveAudio !== undefined) { + numAudioTracks = offerOptions.offerToReceiveAudio; + } + if (offerOptions.offerToReceiveVideo !== undefined) { + numVideoTracks = offerOptions.offerToReceiveVideo; + } + } + if (this.localStreams.length) { + // Push local streams. + this.localStreams[0].getTracks().forEach(function(track) { + tracks.push({ + kind: track.kind, + track: track, + wantReceive: track.kind === 'audio' ? + numAudioTracks > 0 : numVideoTracks > 0 + }); + if (track.kind === 'audio') { + numAudioTracks--; + } else if (track.kind === 'video') { + numVideoTracks--; + } + }); + } + // Create M-lines for recvonly streams. + while (numAudioTracks > 0 || numVideoTracks > 0) { + if (numAudioTracks > 0) { + tracks.push({ + kind: 'audio', + wantReceive: true + }); + numAudioTracks--; + } + if (numVideoTracks > 0) { + tracks.push({ + kind: 'video', + wantReceive: true + }); + numVideoTracks--; + } + } + + var sdp = SDPUtils.writeSessionBoilerplate(); + var transceivers = []; + tracks.forEach(function(mline, sdpMLineIndex) { + // For each track, create an ice gatherer, ice transport, + // dtls transport, potentially rtpsender and rtpreceiver. + var track = mline.track; + var kind = mline.kind; + var mid = SDPUtils.generateIdentifier(); + + var transports = self.usingBundle && sdpMLineIndex > 0 ? { + iceGatherer: transceivers[0].iceGatherer, + iceTransport: transceivers[0].iceTransport, + dtlsTransport: transceivers[0].dtlsTransport + } : self._createIceAndDtlsTransports(mid, sdpMLineIndex); + + var localCapabilities = RTCRtpSender.getCapabilities(kind); + // filter RTX until additional stuff needed for RTX is implemented + // in adapter.js + localCapabilities.codecs = localCapabilities.codecs.filter( + function(codec) { + return codec.name !== 'rtx'; + }); + localCapabilities.codecs.forEach(function(codec) { + // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552 + // by adding level-asymmetry-allowed=1 + if (codec.name === 'H264' && + codec.parameters['level-asymmetry-allowed'] === undefined) { + codec.parameters['level-asymmetry-allowed'] = '1'; + } + }); + + var rtpSender; + var rtpReceiver; + + // generate an ssrc now, to be used later in rtpSender.send + var sendEncodingParameters = [{ + ssrc: (2 * sdpMLineIndex + 1) * 1001 + }]; + if (track) { + rtpSender = new RTCRtpSender(track, transports.dtlsTransport); + } + + if (mline.wantReceive) { + rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind); + } + + transceivers[sdpMLineIndex] = { + iceGatherer: transports.iceGatherer, + iceTransport: transports.iceTransport, + dtlsTransport: transports.dtlsTransport, + localCapabilities: localCapabilities, + remoteCapabilities: null, + rtpSender: rtpSender, + rtpReceiver: rtpReceiver, + kind: kind, + mid: mid, + sendEncodingParameters: sendEncodingParameters, + recvEncodingParameters: null + }; + }); + if (this.usingBundle) { + sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) { + return t.mid; + }).join(' ') + '\r\n'; + } + tracks.forEach(function(mline, sdpMLineIndex) { + var transceiver = transceivers[sdpMLineIndex]; + sdp += SDPUtils.writeMediaSection(transceiver, + transceiver.localCapabilities, 'offer', self.localStreams[0]); + }); + + this._pendingOffer = transceivers; + var desc = new RTCSessionDescription({ + type: 'offer', + sdp: sdp + }); + if (arguments.length && typeof arguments[0] === 'function') { + window.setTimeout(arguments[0], 0, desc); + } + return Promise.resolve(desc); + }; + + window.RTCPeerConnection.prototype.createAnswer = function() { + var self = this; + + var sdp = SDPUtils.writeSessionBoilerplate(); + if (this.usingBundle) { + sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) { + return t.mid; + }).join(' ') + '\r\n'; + } + this.transceivers.forEach(function(transceiver) { + if (transceiver.isDatachannel) { + sdp += 'm=application 0 DTLS/SCTP 5000\r\n' + + 'c=IN IP4 0.0.0.0\r\n' + + 'a=mid:' + transceiver.mid + '\r\n'; + return; + } + // Calculate intersection of capabilities. + var commonCapabilities = self._getCommonCapabilities( + transceiver.localCapabilities, + transceiver.remoteCapabilities); + + sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities, + 'answer', self.localStreams[0]); + }); + + var desc = new RTCSessionDescription({ + type: 'answer', + sdp: sdp + }); + if (arguments.length && typeof arguments[0] === 'function') { + window.setTimeout(arguments[0], 0, desc); + } + return Promise.resolve(desc); + }; + + window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) { + if (candidate === null) { + this.transceivers.forEach(function(transceiver) { + transceiver.iceTransport.addRemoteCandidate({}); + }); + } else { + var mLineIndex = candidate.sdpMLineIndex; + if (candidate.sdpMid) { + for (var i = 0; i < this.transceivers.length; i++) { + if (this.transceivers[i].mid === candidate.sdpMid) { + mLineIndex = i; + break; + } + } + } + var transceiver = this.transceivers[mLineIndex]; + if (transceiver) { + var cand = Object.keys(candidate.candidate).length > 0 ? + SDPUtils.parseCandidate(candidate.candidate) : {}; + // Ignore Chrome's invalid candidates since Edge does not like them. + if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) { + return; + } + // Ignore RTCP candidates, we assume RTCP-MUX. + if (cand.component !== '1') { + return; + } + // A dirty hack to make samples work. + if (cand.type === 'endOfCandidates') { + cand = {}; + } + transceiver.iceTransport.addRemoteCandidate(cand); + + // update the remoteDescription. + var sections = SDPUtils.splitSections(this.remoteDescription.sdp); + sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim() + : 'a=end-of-candidates') + '\r\n'; + this.remoteDescription.sdp = sections.join(''); + } + } + if (arguments.length > 1 && typeof arguments[1] === 'function') { + window.setTimeout(arguments[1], 0); + } + return Promise.resolve(); + }; + + window.RTCPeerConnection.prototype.getStats = function() { + var promises = []; + this.transceivers.forEach(function(transceiver) { + ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport', + 'dtlsTransport'].forEach(function(method) { + if (transceiver[method]) { + promises.push(transceiver[method].getStats()); + } + }); + }); + var cb = arguments.length > 1 && typeof arguments[1] === 'function' && + arguments[1]; + return new Promise(function(resolve) { + // shim getStats with maplike support + var results = new Map(); + Promise.all(promises).then(function(res) { + res.forEach(function(result) { + Object.keys(result).forEach(function(id) { + results.set(id, result[id]); + results[id] = result[id]; + }); + }); + if (cb) { + window.setTimeout(cb, 0, results); + } + resolve(results); + }); + }); + }; + } +}; + +// Expose public methods. +module.exports = { + shimPeerConnection: edgeShim.shimPeerConnection, + shimGetUserMedia: require('./getusermedia') +}; + +},{"../utils":128,"./getusermedia":124,"sdp":116}],124:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +// Expose public methods. +module.exports = function() { + var shimError_ = function(e) { + return { + name: {PermissionDeniedError: 'NotAllowedError'}[e.name] || e.name, + message: e.message, + constraint: e.constraint, + toString: function() { + return this.name; + } + }; + }; + + // getUserMedia error shim. + var origGetUserMedia = navigator.mediaDevices.getUserMedia. + bind(navigator.mediaDevices); + navigator.mediaDevices.getUserMedia = function(c) { + return origGetUserMedia(c).catch(function(e) { + return Promise.reject(shimError_(e)); + }); + }; +}; + +},{}],125:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +var browserDetails = require('../utils').browserDetails; + +var firefoxShim = { + shimOnTrack: function() { + if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in + window.RTCPeerConnection.prototype)) { + Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', { + get: function() { + return this._ontrack; + }, + set: function(f) { + if (this._ontrack) { + this.removeEventListener('track', this._ontrack); + this.removeEventListener('addstream', this._ontrackpoly); + } + this.addEventListener('track', this._ontrack = f); + this.addEventListener('addstream', this._ontrackpoly = function(e) { + e.stream.getTracks().forEach(function(track) { + var event = new Event('track'); + event.track = track; + event.receiver = {track: track}; + event.streams = [e.stream]; + this.dispatchEvent(event); + }.bind(this)); + }.bind(this)); + } + }); + } + }, + + shimSourceObject: function() { + // Firefox has supported mozSrcObject since FF22, unprefixed in 42. + if (typeof window === 'object') { + if (window.HTMLMediaElement && + !('srcObject' in window.HTMLMediaElement.prototype)) { + // Shim the srcObject property, once, when HTMLMediaElement is found. + Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', { + get: function() { + return this.mozSrcObject; + }, + set: function(stream) { + this.mozSrcObject = stream; + } + }); + } + } + }, + + shimPeerConnection: function() { + if (typeof window !== 'object' || !(window.RTCPeerConnection || + window.mozRTCPeerConnection)) { + return; // probably media.peerconnection.enabled=false in about:config + } + // The RTCPeerConnection object. + if (!window.RTCPeerConnection) { + window.RTCPeerConnection = function(pcConfig, pcConstraints) { + if (browserDetails.version < 38) { + // .urls is not supported in FF < 38. + // create RTCIceServers with a single url. + if (pcConfig && pcConfig.iceServers) { + var newIceServers = []; + for (var i = 0; i < pcConfig.iceServers.length; i++) { + var server = pcConfig.iceServers[i]; + if (server.hasOwnProperty('urls')) { + for (var j = 0; j < server.urls.length; j++) { + var newServer = { + url: server.urls[j] + }; + if (server.urls[j].indexOf('turn') === 0) { + newServer.username = server.username; + newServer.credential = server.credential; + } + newIceServers.push(newServer); + } + } else { + newIceServers.push(pcConfig.iceServers[i]); + } + } + pcConfig.iceServers = newIceServers; + } + } + return new mozRTCPeerConnection(pcConfig, pcConstraints); + }; + window.RTCPeerConnection.prototype = mozRTCPeerConnection.prototype; + + // wrap static methods. Currently just generateCertificate. + if (mozRTCPeerConnection.generateCertificate) { + Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { + get: function() { + return mozRTCPeerConnection.generateCertificate; + } + }); + } + + window.RTCSessionDescription = mozRTCSessionDescription; + window.RTCIceCandidate = mozRTCIceCandidate; + } + + // shim away need for obsolete RTCIceCandidate/RTCSessionDescription. + ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] + .forEach(function(method) { + var nativeMethod = RTCPeerConnection.prototype[method]; + RTCPeerConnection.prototype[method] = function() { + arguments[0] = new ((method === 'addIceCandidate') ? + RTCIceCandidate : RTCSessionDescription)(arguments[0]); + return nativeMethod.apply(this, arguments); + }; + }); + + // support for addIceCandidate(null) + var nativeAddIceCandidate = + RTCPeerConnection.prototype.addIceCandidate; + RTCPeerConnection.prototype.addIceCandidate = function() { + if (arguments[0] === null) { + if (arguments[1]) { + arguments[1].apply(null); + } + return Promise.resolve(); + } + return nativeAddIceCandidate.apply(this, arguments); + }; + + // shim getStats with maplike support + var makeMapStats = function(stats) { + var map = new Map(); + Object.keys(stats).forEach(function(key) { + map.set(key, stats[key]); + map[key] = stats[key]; + }); + return map; + }; + + var nativeGetStats = RTCPeerConnection.prototype.getStats; + RTCPeerConnection.prototype.getStats = function(selector, onSucc, onErr) { + return nativeGetStats.apply(this, [selector || null]) + .then(function(stats) { + return makeMapStats(stats); + }) + .then(onSucc, onErr); + }; + } +}; + +// Expose public methods. +module.exports = { + shimOnTrack: firefoxShim.shimOnTrack, + shimSourceObject: firefoxShim.shimSourceObject, + shimPeerConnection: firefoxShim.shimPeerConnection, + shimGetUserMedia: require('./getusermedia') +}; + +},{"../utils":128,"./getusermedia":126}],126:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +var logging = require('../utils').log; +var browserDetails = require('../utils').browserDetails; + +// Expose public methods. +module.exports = function() { + var shimError_ = function(e) { + return { + name: { + SecurityError: 'NotAllowedError', + PermissionDeniedError: 'NotAllowedError' + }[e.name] || e.name, + message: { + 'The operation is insecure.': 'The request is not allowed by the ' + + 'user agent or the platform in the current context.' + }[e.message] || e.message, + constraint: e.constraint, + toString: function() { + return this.name + (this.message && ': ') + this.message; + } + }; + }; + + // getUserMedia constraints shim. + var getUserMedia_ = function(constraints, onSuccess, onError) { + var constraintsToFF37_ = function(c) { + if (typeof c !== 'object' || c.require) { + return c; + } + var require = []; + Object.keys(c).forEach(function(key) { + if (key === 'require' || key === 'advanced' || key === 'mediaSource') { + return; + } + var r = c[key] = (typeof c[key] === 'object') ? + c[key] : {ideal: c[key]}; + if (r.min !== undefined || + r.max !== undefined || r.exact !== undefined) { + require.push(key); + } + if (r.exact !== undefined) { + if (typeof r.exact === 'number') { + r. min = r.max = r.exact; + } else { + c[key] = r.exact; + } + delete r.exact; + } + if (r.ideal !== undefined) { + c.advanced = c.advanced || []; + var oc = {}; + if (typeof r.ideal === 'number') { + oc[key] = {min: r.ideal, max: r.ideal}; + } else { + oc[key] = r.ideal; + } + c.advanced.push(oc); + delete r.ideal; + if (!Object.keys(r).length) { + delete c[key]; + } + } + }); + if (require.length) { + c.require = require; + } + return c; + }; + constraints = JSON.parse(JSON.stringify(constraints)); + if (browserDetails.version < 38) { + logging('spec: ' + JSON.stringify(constraints)); + if (constraints.audio) { + constraints.audio = constraintsToFF37_(constraints.audio); + } + if (constraints.video) { + constraints.video = constraintsToFF37_(constraints.video); + } + logging('ff37: ' + JSON.stringify(constraints)); + } + return navigator.mozGetUserMedia(constraints, onSuccess, function(e) { + onError(shimError_(e)); + }); + }; + + // Returns the result of getUserMedia as a Promise. + var getUserMediaPromise_ = function(constraints) { + return new Promise(function(resolve, reject) { + getUserMedia_(constraints, resolve, reject); + }); + }; + + // Shim for mediaDevices on older versions. + if (!navigator.mediaDevices) { + navigator.mediaDevices = {getUserMedia: getUserMediaPromise_, + addEventListener: function() { }, + removeEventListener: function() { } + }; + } + navigator.mediaDevices.enumerateDevices = + navigator.mediaDevices.enumerateDevices || function() { + return new Promise(function(resolve) { + var infos = [ + {kind: 'audioinput', deviceId: 'default', label: '', groupId: ''}, + {kind: 'videoinput', deviceId: 'default', label: '', groupId: ''} + ]; + resolve(infos); + }); + }; + + if (browserDetails.version < 41) { + // Work around http://bugzil.la/1169665 + var orgEnumerateDevices = + navigator.mediaDevices.enumerateDevices.bind(navigator.mediaDevices); + navigator.mediaDevices.enumerateDevices = function() { + return orgEnumerateDevices().then(undefined, function(e) { + if (e.name === 'NotFoundError') { + return []; + } + throw e; + }); + }; + } + if (browserDetails.version < 49) { + var origGetUserMedia = navigator.mediaDevices.getUserMedia. + bind(navigator.mediaDevices); + navigator.mediaDevices.getUserMedia = function(c) { + return origGetUserMedia(c).then(function(stream) { + // Work around https://bugzil.la/802326 + if (c.audio && !stream.getAudioTracks().length || + c.video && !stream.getVideoTracks().length) { + stream.getTracks().forEach(function(track) { + track.stop(); + }); + throw new DOMException('The object can not be found here.', + 'NotFoundError'); + } + return stream; + }, function(e) { + return Promise.reject(shimError_(e)); + }); + }; + } + navigator.getUserMedia = function(constraints, onSuccess, onError) { + if (browserDetails.version < 44) { + return getUserMedia_(constraints, onSuccess, onError); + } + // Replace Firefox 44+'s deprecation warning with unprefixed version. + console.warn('navigator.getUserMedia has been replaced by ' + + 'navigator.mediaDevices.getUserMedia'); + navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError); + }; +}; + +},{"../utils":128}],127:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +'use strict'; +var safariShim = { + // TODO: DrAlex, should be here, double check against LayoutTests + // shimOnTrack: function() { }, + + // TODO: once the back-end for the mac port is done, add. + // TODO: check for webkitGTK+ + // shimPeerConnection: function() { }, + + shimGetUserMedia: function() { + navigator.getUserMedia = navigator.webkitGetUserMedia; + } +}; + +// Expose public methods. +module.exports = { + shimGetUserMedia: safariShim.shimGetUserMedia + // TODO + // shimOnTrack: safariShim.shimOnTrack, + // shimPeerConnection: safariShim.shimPeerConnection +}; + +},{}],128:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +var logDisabled_ = true; + +// Utility methods. +var utils = { + disableLog: function(bool) { + if (typeof bool !== 'boolean') { + return new Error('Argument type: ' + typeof bool + + '. Please use a boolean.'); + } + logDisabled_ = bool; + return (bool) ? 'adapter.js logging disabled' : + 'adapter.js logging enabled'; + }, + + log: function() { + if (typeof window === 'object') { + if (logDisabled_) { + return; + } + if (typeof console !== 'undefined' && typeof console.log === 'function') { + console.log.apply(console, arguments); + } + } + }, + + /** + * Extract browser version out of the provided user agent string. + * + * @param {!string} uastring userAgent string. + * @param {!string} expr Regular expression used as match criteria. + * @param {!number} pos position in the version string to be returned. + * @return {!number} browser version. + */ + extractVersion: function(uastring, expr, pos) { + var match = uastring.match(expr); + return match && match.length >= pos && parseInt(match[pos], 10); + }, + + /** + * Browser detector. + * + * @return {object} result containing browser and version + * properties. + */ + detectBrowser: function() { + // Returned result object. + var result = {}; + result.browser = null; + result.version = null; + + // Fail early if it's not a browser + if (typeof window === 'undefined' || !window.navigator) { + result.browser = 'Not a browser.'; + return result; + } + + // Firefox. + if (navigator.mozGetUserMedia) { + result.browser = 'firefox'; + result.version = this.extractVersion(navigator.userAgent, + /Firefox\/([0-9]+)\./, 1); + + // all webkit-based browsers + } else if (navigator.webkitGetUserMedia) { + // Chrome, Chromium, Webview, Opera, all use the chrome shim for now + if (window.webkitRTCPeerConnection) { + result.browser = 'chrome'; + result.version = this.extractVersion(navigator.userAgent, + /Chrom(e|ium)\/([0-9]+)\./, 2); + + // Safari or unknown webkit-based + // for the time being Safari has support for MediaStreams but not webRTC + } else { + // Safari UA substrings of interest for reference: + // - webkit version: AppleWebKit/602.1.25 (also used in Op,Cr) + // - safari UI version: Version/9.0.3 (unique to Safari) + // - safari UI webkit version: Safari/601.4.4 (also used in Op,Cr) + // + // if the webkit version and safari UI webkit versions are equals, + // ... this is a stable version. + // + // only the internal webkit version is important today to know if + // media streams are supported + // + if (navigator.userAgent.match(/Version\/(\d+).(\d+)/)) { + result.browser = 'safari'; + result.version = this.extractVersion(navigator.userAgent, + /AppleWebKit\/([0-9]+)\./, 1); + + // unknown webkit-based browser + } else { + result.browser = 'Unsupported webkit-based browser ' + + 'with GUM support but no WebRTC support.'; + return result; + } + } + + // Edge. + } else if (navigator.mediaDevices && + navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) { + result.browser = 'edge'; + result.version = this.extractVersion(navigator.userAgent, + /Edge\/(\d+).(\d+)$/, 2); + + // Default fallthrough: not supported. + } else { + result.browser = 'Not a supported browser.'; + return result; + } + + return result; + } +}; + +// Export. +module.exports = { + log: utils.log, + disableLog: utils.disableLog, + browserDetails: utils.detectBrowser(), + extractVersion: utils.extractVersion +}; + +},{}],129:[function(require,module,exports){ +(function (global){ +'use strict'; + +require('webrtc-adapter'); + +var _rtc_session = require('./rtc_session'); + +var _rtc_session2 = _interopRequireDefault(_rtc_session); + +var _rtc_const = require('./rtc_const'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * @license + * License info for uuid module assembled into js bundle: + * + * The MIT License (MIT) + * + * Copyright (c) 2010-2016 Robert Kieffer and other contributors + * + * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +global.connect = global.connect || {}; /** + * @license + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ +/** + * @license + * License info for webrtc-adapter module assembled into js bundle: + * + * Copyright (c) 2014, The WebRTC project authors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. + * + * Neither the name of Google nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * @license + * License info for sdp module assembled into js bundle: + * + * See https://www.npmjs.com/package/sdp + */ + +global.connect.RTCSession = _rtc_session2.default; +global.connect.RTCErrors = _rtc_const.RTC_ERRORS; + +global.lily = global.lily || {}; +global.lily.RTCSession = _rtc_session2.default; +global.lily.RTCErrors = _rtc_const.RTC_ERRORS; + +}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) + +},{"./rtc_const":131,"./rtc_session":132,"webrtc-adapter":120}],130:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.UnknownSignalingError = exports.UnknownSignalingErrorName = exports.CallNotFoundException = exports.CallNotFoundExceptionName = exports.BusyException = exports.BusyExceptionName = exports.UnsupportedOperation = exports.UnsupportedOperationExceptionName = exports.IllegalState = exports.IllegalStateExceptionName = exports.IllegalParameters = exports.IllegalParametersExceptionName = exports.GumTimeout = exports.GumTimeoutExceptionName = exports.Timeout = exports.TimeoutExceptionName = undefined; + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn'); + +var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2); + +var _inherits2 = require('babel-runtime/helpers/inherits'); + +var _inherits3 = _interopRequireDefault(_inherits2); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ +var TimeoutExceptionName = exports.TimeoutExceptionName = 'Timeout'; + +var Timeout = exports.Timeout = function (_Error) { + (0, _inherits3.default)(Timeout, _Error); + + function Timeout(msg) { + (0, _classCallCheck3.default)(this, Timeout); + + var _this = (0, _possibleConstructorReturn3.default)(this, (Timeout.__proto__ || Object.getPrototypeOf(Timeout)).call(this, msg)); + + _this.name = TimeoutExceptionName; + return _this; + } + + return Timeout; +}(Error); + +var GumTimeoutExceptionName = exports.GumTimeoutExceptionName = 'GumTimeout'; + +var GumTimeout = exports.GumTimeout = function (_Timeout) { + (0, _inherits3.default)(GumTimeout, _Timeout); + + function GumTimeout(msg) { + (0, _classCallCheck3.default)(this, GumTimeout); + + var _this2 = (0, _possibleConstructorReturn3.default)(this, (GumTimeout.__proto__ || Object.getPrototypeOf(GumTimeout)).call(this, msg)); + + _this2.name = GumTimeoutExceptionName; + return _this2; + } + + return GumTimeout; +}(Timeout); + +var IllegalParametersExceptionName = exports.IllegalParametersExceptionName = 'IllegalParameters'; + +var IllegalParameters = exports.IllegalParameters = function (_Error2) { + (0, _inherits3.default)(IllegalParameters, _Error2); + + function IllegalParameters(msg) { + (0, _classCallCheck3.default)(this, IllegalParameters); + + var _this3 = (0, _possibleConstructorReturn3.default)(this, (IllegalParameters.__proto__ || Object.getPrototypeOf(IllegalParameters)).call(this, msg)); + + _this3.name = IllegalParametersExceptionName; + return _this3; + } + + return IllegalParameters; +}(Error); + +var IllegalStateExceptionName = exports.IllegalStateExceptionName = 'IllegalState'; + +var IllegalState = exports.IllegalState = function (_Error3) { + (0, _inherits3.default)(IllegalState, _Error3); + + function IllegalState(msg) { + (0, _classCallCheck3.default)(this, IllegalState); + + var _this4 = (0, _possibleConstructorReturn3.default)(this, (IllegalState.__proto__ || Object.getPrototypeOf(IllegalState)).call(this, msg)); + + _this4.name = IllegalStateExceptionName; + return _this4; + } + + return IllegalState; +}(Error); + +var UnsupportedOperationExceptionName = exports.UnsupportedOperationExceptionName = 'UnsupportedOperation'; + +var UnsupportedOperation = exports.UnsupportedOperation = function (_Error4) { + (0, _inherits3.default)(UnsupportedOperation, _Error4); + + function UnsupportedOperation(msg) { + (0, _classCallCheck3.default)(this, UnsupportedOperation); + + var _this5 = (0, _possibleConstructorReturn3.default)(this, (UnsupportedOperation.__proto__ || Object.getPrototypeOf(UnsupportedOperation)).call(this, msg)); + + _this5.name = UnsupportedOperationExceptionName; + return _this5; + } + + return UnsupportedOperation; +}(Error); + +var BusyExceptionName = exports.BusyExceptionName = 'BusyException'; + +var BusyException = exports.BusyException = function (_Error5) { + (0, _inherits3.default)(BusyException, _Error5); + + function BusyException(msg) { + (0, _classCallCheck3.default)(this, BusyException); + + var _this6 = (0, _possibleConstructorReturn3.default)(this, (BusyException.__proto__ || Object.getPrototypeOf(BusyException)).call(this, msg)); + + _this6.name = BusyExceptionName; + return _this6; + } + + return BusyException; +}(Error); + +var CallNotFoundExceptionName = exports.CallNotFoundExceptionName = 'CallNotFoundException'; + +var CallNotFoundException = exports.CallNotFoundException = function (_Error6) { + (0, _inherits3.default)(CallNotFoundException, _Error6); + + function CallNotFoundException(msg) { + (0, _classCallCheck3.default)(this, CallNotFoundException); + + var _this7 = (0, _possibleConstructorReturn3.default)(this, (CallNotFoundException.__proto__ || Object.getPrototypeOf(CallNotFoundException)).call(this, msg)); + + _this7.name = CallNotFoundExceptionName; + return _this7; + } + + return CallNotFoundException; +}(Error); + +var UnknownSignalingErrorName = exports.UnknownSignalingErrorName = 'UnknownSignalingError'; + +var UnknownSignalingError = exports.UnknownSignalingError = function (_Error7) { + (0, _inherits3.default)(UnknownSignalingError, _Error7); + + function UnknownSignalingError() { + (0, _classCallCheck3.default)(this, UnknownSignalingError); + + var _this8 = (0, _possibleConstructorReturn3.default)(this, (UnknownSignalingError.__proto__ || Object.getPrototypeOf(UnknownSignalingError)).call(this)); + + _this8.name = UnknownSignalingErrorName; + return _this8; + } + + return UnknownSignalingError; +}(Error); + +},{"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/inherits":13,"babel-runtime/helpers/possibleConstructorReturn":14}],131:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ + +/** + * Timeout waiting for server response to accept/hangup request. + */ +var MAX_ACCEPT_BYE_DELAY_MS = exports.MAX_ACCEPT_BYE_DELAY_MS = 2000; +/** + * Timeout waiting for server response to invite. + */ +var MAX_INVITE_DELAY_MS = exports.MAX_INVITE_DELAY_MS = 5000; +/** + * Default timeout on opening WebSocket connection. + */ +var DEFAULT_CONNECT_TIMEOUT_MS = exports.DEFAULT_CONNECT_TIMEOUT_MS = 10000; +/** + * Default ice collection timeout in milliseconds. + */ +var DEFAULT_ICE_TIMEOUT_MS = exports.DEFAULT_ICE_TIMEOUT_MS = 8000; +/** + * Default gum timeout in milliseconds to be enforced during start of a call. + */ +var DEFAULT_GUM_TIMEOUT_MS = exports.DEFAULT_GUM_TIMEOUT_MS = 10000; + +/** + * RTC error names. + */ +var RTC_ERRORS = exports.RTC_ERRORS = { + ICE_COLLECTION_TIMEOUT: 'Ice Collection Timeout', + USER_BUSY: 'User Busy', + SIGNALLING_CONNECTION_FAILURE: 'Signalling Connection Failure', + SIGNALLING_HANDSHAKE_FAILURE: 'Signalling Handshake Failure', + SET_REMOTE_DESCRIPTION_FAILURE: 'Set Remote Description Failure', + CREATE_OFFER_FAILURE: 'Create Offer Failure', + SET_LOCAL_DESCRIPTION_FAILURE: 'Set Local Description Failure', + INVALID_REMOTE_SDP: 'Invalid Remote SDP', + NO_REMOTE_ICE_CANDIDATE: 'No Remote ICE Candidate', + GUM_TIMEOUT_FAILURE: 'GUM Timeout Failure', + GUM_OTHER_FAILURE: 'GUM Other Failure', + CALL_NOT_FOUND: 'Call Not Found' +}; + +},{}],132:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.FailedState = exports.DisconnectedState = exports.CleanUpState = exports.TalkingState = exports.AcceptState = exports.InviteAnswerState = exports.ConnectSignalingAndIceCollectionState = exports.SetLocalSessionDescriptionState = exports.CreateOfferState = exports.GrabLocalMediaState = exports.RTCSessionState = undefined; + +var _regenerator = require('babel-runtime/regenerator'); + +var _regenerator2 = _interopRequireDefault(_regenerator); + +var _asyncToGenerator2 = require('babel-runtime/helpers/asyncToGenerator'); + +var _asyncToGenerator3 = _interopRequireDefault(_asyncToGenerator2); + +var _typeof2 = require('babel-runtime/helpers/typeof'); + +var _typeof3 = _interopRequireDefault(_typeof2); + +var _get2 = require('babel-runtime/helpers/get'); + +var _get3 = _interopRequireDefault(_get2); + +var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn'); + +var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2); + +var _inherits2 = require('babel-runtime/helpers/inherits'); + +var _inherits3 = _interopRequireDefault(_inherits2); + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require('babel-runtime/helpers/createClass'); + +var _createClass3 = _interopRequireDefault(_createClass2); + +var _utils = require('./utils'); + +var _session_report = require('./session_report'); + +var _rtc_const = require('./rtc_const'); + +var _exceptions = require('./exceptions'); + +var _signaling = require('./signaling'); + +var _signaling2 = _interopRequireDefault(_signaling); + +var _v = require('uuid/v4'); + +var _v2 = _interopRequireDefault(_v); + +var _rtpStats = require('./rtp-stats'); + +var _sdp = require('sdp'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ +var RTCSessionState = exports.RTCSessionState = function () { + /** + * + * @param {RtcSession} rtcSession + */ + function RTCSessionState(rtcSession) { + (0, _classCallCheck3.default)(this, RTCSessionState); + + this._rtcSession = rtcSession; + } + + (0, _createClass3.default)(RTCSessionState, [{ + key: 'onEnter', + value: function onEnter() {} + }, { + key: 'onExit', + value: function onExit() {} + }, { + key: '_isCurrentState', + value: function _isCurrentState() { + return this._rtcSession._state === this; + } + }, { + key: 'transit', + value: function transit(nextState) { + if (this._isCurrentState()) { + this._rtcSession.transit(nextState); + } + } + }, { + key: 'hangup', + value: function hangup() { + this.transit(new FailedState(this._rtcSession)); + } + }, { + key: 'onIceCandidate', + value: function onIceCandidate(evt) {// eslint-disable-line no-unused-vars + //ignore candidate by default, ConnectSignalingAndIceCollectionState will override to collect candidates, but collecting process could last much longer than ConnectSignalingAndIceCollectionState + //we don't want to spam the console log + } + }, { + key: 'onRemoteHungup', + value: function onRemoteHungup() { + throw new _exceptions.UnsupportedOperation('onRemoteHungup not implemented by ' + this.name); + } + }, { + key: 'onSignalingConnected', + value: function onSignalingConnected() { + throw new _exceptions.UnsupportedOperation('onSignalingConnected not implemented by ' + this.name); + } + }, { + key: 'onSignalingHandshaked', + value: function onSignalingHandshaked() { + throw new _exceptions.UnsupportedOperation('onSignalingHandshaked not implemented by ' + this.name); + } + }, { + key: 'onSignalingFailed', + value: function onSignalingFailed(e) { + // eslint-disable-line no-unused-vars + throw new _exceptions.UnsupportedOperation('onSignalingFailed not implemented by ' + this.name); + } + }, { + key: 'onIceStateChange', + value: function onIceStateChange(evt) {// eslint-disable-line no-unused-vars + } + }, { + key: 'logger', + get: function get() { + return this._rtcSession._logger; + } + }, { + key: 'name', + get: function get() { + return "RTCSessionState"; + } + }]); + return RTCSessionState; +}(); + +var GrabLocalMediaState = exports.GrabLocalMediaState = function (_RTCSessionState) { + (0, _inherits3.default)(GrabLocalMediaState, _RTCSessionState); + + function GrabLocalMediaState() { + (0, _classCallCheck3.default)(this, GrabLocalMediaState); + return (0, _possibleConstructorReturn3.default)(this, (GrabLocalMediaState.__proto__ || Object.getPrototypeOf(GrabLocalMediaState)).apply(this, arguments)); + } + + (0, _createClass3.default)(GrabLocalMediaState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + var startTime = Date.now(); + if (self._rtcSession._userAudioStream) { + self.transit(new CreateOfferState(self._rtcSession)); + } else { + var gumTimeoutPromise = new Promise(function (resolve, reject) { + setTimeout(function () { + reject(new _exceptions.GumTimeout('Local media has not been initialized yet.')); + }, self._rtcSession._gumTimeoutMillis); + }); + var sessionGumPromise = self._gUM(self._rtcSession._buildMediaConstraints()); + + Promise.race([sessionGumPromise, gumTimeoutPromise]).then(function (stream) { + self._rtcSession._sessionReport.gumTimeMillis = Date.now() - startTime; + self._rtcSession._onGumSuccess(self._rtcSession); + self._rtcSession._localStream = stream; + self._rtcSession._sessionReport.gumOtherFailure = false; + self._rtcSession._sessionReport.gumTimeoutFailure = false; + self.transit(new CreateOfferState(self._rtcSession)); + }).catch(function (e) { + self._rtcSession._sessionReport.gumTimeMillis = Date.now() - startTime; + var errorReason; + if (e instanceof _exceptions.GumTimeout) { + errorReason = _rtc_const.RTC_ERRORS.GUM_TIMEOUT_FAILURE; + self._rtcSession._sessionReport.gumTimeoutFailure = true; + self._rtcSession._sessionReport.gumOtherFailure = false; + } else { + errorReason = _rtc_const.RTC_ERRORS.GUM_OTHER_FAILURE; + self._rtcSession._sessionReport.gumOtherFailure = true; + self._rtcSession._sessionReport.gumTimeoutFailure = false; + } + self.logger.error('Local media initialization failed', e); + self._rtcSession._onGumError(self._rtcSession); + self.transit(new FailedState(self._rtcSession, errorReason)); + }); + } + } + }, { + key: '_gUM', + value: function _gUM(constraints) { + return navigator.mediaDevices.getUserMedia(constraints); + } + }, { + key: 'name', + get: function get() { + return "GrabLocalMediaState"; + } + }]); + return GrabLocalMediaState; +}(RTCSessionState); + +var CreateOfferState = exports.CreateOfferState = function (_RTCSessionState2) { + (0, _inherits3.default)(CreateOfferState, _RTCSessionState2); + + function CreateOfferState() { + (0, _classCallCheck3.default)(this, CreateOfferState); + return (0, _possibleConstructorReturn3.default)(this, (CreateOfferState.__proto__ || Object.getPrototypeOf(CreateOfferState)).apply(this, arguments)); + } + + (0, _createClass3.default)(CreateOfferState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + var stream = self._rtcSession._localStream; + self._rtcSession._pc.addStream(stream); + self._rtcSession._onLocalStreamAdded(self._rtcSession, stream); + self._rtcSession._pc.createOffer().then(function (rtcSessionDescription) { + self._rtcSession._localSessionDescription = rtcSessionDescription; + self._rtcSession._sessionReport.createOfferFailure = false; + self.transit(new SetLocalSessionDescriptionState(self._rtcSession)); + }).catch(function (e) { + self.logger.error('CreateOffer failed', e); + self._rtcSession._sessionReport.createOfferFailure = true; + self.transit(new FailedState(self._rtcSession, _rtc_const.RTC_ERRORS.CREATE_OFFER_FAILURE)); + }); + } + }, { + key: 'name', + get: function get() { + return "CreateOfferState"; + } + }]); + return CreateOfferState; +}(RTCSessionState); + +var SetLocalSessionDescriptionState = exports.SetLocalSessionDescriptionState = function (_RTCSessionState3) { + (0, _inherits3.default)(SetLocalSessionDescriptionState, _RTCSessionState3); + + function SetLocalSessionDescriptionState() { + (0, _classCallCheck3.default)(this, SetLocalSessionDescriptionState); + return (0, _possibleConstructorReturn3.default)(this, (SetLocalSessionDescriptionState.__proto__ || Object.getPrototypeOf(SetLocalSessionDescriptionState)).apply(this, arguments)); + } + + (0, _createClass3.default)(SetLocalSessionDescriptionState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + + // fix/modify SDP as needed here, before setLocalDescription + var localDescription = self._rtcSession._localSessionDescription; + var sdpOptions = new _utils.SdpOptions(); + // Set audio codec. + if (self._rtcSession._forceAudioCodec) { + sdpOptions.forceCodec['audio'] = self._rtcSession._forceAudioCodec; + } + // Set video codec. + if (self._rtcSession._forceVideoCodec) { + sdpOptions.forceCodec['video'] = self._rtcSession._forceVideoCodec; + } + sdpOptions.enableOpusDtx = self._rtcSession._enableOpusDtx; + + var transformedSdp = (0, _utils.transformSdp)(localDescription.sdp, sdpOptions); + localDescription.sdp = transformedSdp.sdp; + + self.logger.info('LocalSD', self._rtcSession._localSessionDescription); + self._rtcSession._pc.setLocalDescription(self._rtcSession._localSessionDescription).then(function () { + var initializationTime = Date.now() - self._rtcSession._connectTimeStamp; + self._rtcSession._sessionReport.initializationTimeMillis = initializationTime; + self._rtcSession._onSessionInitialized(self._rtcSession, initializationTime); + self._rtcSession._sessionReport.setLocalDescriptionFailure = false; + self.transit(new ConnectSignalingAndIceCollectionState(self._rtcSession, transformedSdp.mLines)); + }).catch(function (e) { + self.logger.error('SetLocalDescription failed', e); + self._rtcSession._sessionReport.setLocalDescriptionFailure = true; + self.transit(new FailedState(self._rtcSession, _rtc_const.RTC_ERRORS.SET_LOCAL_DESCRIPTION_FAILURE)); + }); + } + }, { + key: 'name', + get: function get() { + return "SetLocalSessionDescriptionState"; + } + }]); + return SetLocalSessionDescriptionState; +}(RTCSessionState); + +/** + * Kick off signaling connection. Wait until signaling connects and ICE collection (which already started in previous state) completes. + * ICE collection times out after user specified amount of time (default to DEFAULT_ICE_TIMEOUT_MS) in case user has complex network environment that blackholes STUN/TURN requests. In this case at least one candidate is required to move forward. + * ICE collection could also wrap up before timeout if it's determined that RTP candidates from same TURN server have been collected for all m lines. + */ + + +var ConnectSignalingAndIceCollectionState = exports.ConnectSignalingAndIceCollectionState = function (_RTCSessionState4) { + (0, _inherits3.default)(ConnectSignalingAndIceCollectionState, _RTCSessionState4); + + /** + * Create ConnectSignalingAndIceCollectionState object. + * @param {RtcSession} rtcSession + * @param {number} mLines Number of m lines in SDP + */ + function ConnectSignalingAndIceCollectionState(rtcSession, mLines) { + (0, _classCallCheck3.default)(this, ConnectSignalingAndIceCollectionState); + + var _this4 = (0, _possibleConstructorReturn3.default)(this, (ConnectSignalingAndIceCollectionState.__proto__ || Object.getPrototypeOf(ConnectSignalingAndIceCollectionState)).call(this, rtcSession)); + + _this4._iceCandidates = []; + _this4._iceCandidateFoundationsMap = {}; + _this4._mLines = mLines; + return _this4; + } + + (0, _createClass3.default)(ConnectSignalingAndIceCollectionState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + self._startTime = Date.now(); + setTimeout(function () { + if (self._isCurrentState() && !self._iceCompleted) { + self.logger.warn('ICE collection timed out'); + self._reportIceCompleted(true); + } + }, self._rtcSession._iceTimeoutMillis); + self._rtcSession._createSignalingChannel().connect(); + } + }, { + key: 'onSignalingConnected', + value: function onSignalingConnected() { + this._rtcSession._signallingConnectTimestamp = Date.now(); + this._rtcSession._sessionReport.signallingConnectTimeMillis = this._rtcSession._signallingConnectTimestamp - this._startTime; + this._signalingConnected = true; + this._rtcSession._onSignalingConnected(this._rtcSession); + this._rtcSession._sessionReport.signallingConnectionFailure = false; + this._checkAndTransit(); + } + }, { + key: 'onSignalingFailed', + value: function onSignalingFailed(e) { + this._rtcSession._sessionReport.signallingConnectTimeMillis = Date.now() - this._startTime; + this.logger.error('Failed connecting to signaling server', e); + this._rtcSession._sessionReport.signallingConnectionFailure = true; + this.transit(new FailedState(this._rtcSession, _rtc_const.RTC_ERRORS.SIGNALLING_CONNECTION_FAILURE)); + } + }, { + key: '_createLocalCandidate', + value: function _createLocalCandidate(initDict) { + return new RTCIceCandidate(initDict); + } + }, { + key: 'onIceCandidate', + value: function onIceCandidate(evt) { + var candidate = evt.candidate; + this.logger.log('onicecandidate ' + JSON.stringify(candidate)); + if (candidate) { + this._iceCandidates.push(this._createLocalCandidate(candidate)); + + if (!this._iceCompleted) { + this._checkCandidatesSufficient(candidate); + } + } else { + this._reportIceCompleted(false); + } + } + }, { + key: '_checkCandidatesSufficient', + value: function _checkCandidatesSufficient(candidate) { + //check if we collected sufficient candidates from single media server to start the call + var candidateObj = (0, _sdp.parseCandidate)(candidate.candidate); + if (candidateObj.component != 1) { + return; + } + var candidateFoundation = candidateObj.foundation; + var candidateMLineIndex = candidate.sdpMLineIndex; + if (candidateFoundation && candidateMLineIndex >= 0 && candidateMLineIndex < this._mLines) { + var mIndexList = this._iceCandidateFoundationsMap[candidateFoundation] || []; + if (!mIndexList.includes(candidateMLineIndex)) { + mIndexList.push(candidateMLineIndex); + } + this._iceCandidateFoundationsMap[candidateFoundation] = mIndexList; + + if (this._mLines == mIndexList.length) { + this._reportIceCompleted(false); + } + } + } + }, { + key: '_reportIceCompleted', + value: function _reportIceCompleted(isTimeout) { + this._rtcSession._sessionReport.iceCollectionTimeMillis = Date.now() - this._startTime; + this._iceCompleted = true; + this._rtcSession._onIceCollectionComplete(this._rtcSession, isTimeout, this._iceCandidates.length); + if (this._iceCandidates.length > 0) { + this._rtcSession._sessionReport.iceCollectionFailure = false; + this._checkAndTransit(); + } else { + this.logger.error('No ICE candidate'); + this._rtcSession._sessionReport.iceCollectionFailure = true; + this.transit(new FailedState(this._rtcSession, _rtc_const.RTC_ERRORS.ICE_COLLECTION_TIMEOUT)); + } + } + }, { + key: '_checkAndTransit', + value: function _checkAndTransit() { + if (this._iceCompleted && this._signalingConnected) { + this.transit(new InviteAnswerState(this._rtcSession, this._iceCandidates)); + } else if (!this._iceCompleted) { + this.logger.log('Pending ICE collection'); + } else { + //implies _signalingConnected == false + this.logger.log('Pending signaling connection'); + } + } + }, { + key: 'name', + get: function get() { + return "ConnectSignalingAndIceCollectionState"; + } + }]); + return ConnectSignalingAndIceCollectionState; +}(RTCSessionState); + +var InviteAnswerState = exports.InviteAnswerState = function (_RTCSessionState5) { + (0, _inherits3.default)(InviteAnswerState, _RTCSessionState5); + + function InviteAnswerState(rtcSession, iceCandidates) { + (0, _classCallCheck3.default)(this, InviteAnswerState); + + var _this5 = (0, _possibleConstructorReturn3.default)(this, (InviteAnswerState.__proto__ || Object.getPrototypeOf(InviteAnswerState)).call(this, rtcSession)); + + _this5._iceCandidates = iceCandidates; + return _this5; + } + + (0, _createClass3.default)(InviteAnswerState, [{ + key: 'onEnter', + value: function onEnter() { + var rtcSession = this._rtcSession; + rtcSession._onSignalingStarted(rtcSession); + rtcSession._signalingChannel.invite(rtcSession._localSessionDescription.sdp, this._iceCandidates); + } + }, { + key: 'onSignalingAnswered', + value: function onSignalingAnswered(sdp, candidates) { + this._rtcSession._sessionReport.userBusyFailure = false; + this._rtcSession._sessionReport.handshakingFailure = false; + this.transit(new AcceptState(this._rtcSession, sdp, candidates)); + } + }, { + key: 'onSignalingFailed', + value: function onSignalingFailed(e) { + var reason; + if (e.name == _exceptions.BusyExceptionName) { + this.logger.error('User Busy, possibly multiple CCP windows open', e); + this._rtcSession._sessionReport.userBusyFailure = true; + this._rtcSession._sessionReport.handshakingFailure = true; + reason = _rtc_const.RTC_ERRORS.USER_BUSY; + } else if (e.name == _exceptions.CallNotFoundExceptionName) { + this.logger.error('Call not found. One of the participant probably hungup.', e); + reason = _rtc_const.RTC_ERRORS.CALL_NOT_FOUND; + this._rtcSession._sessionReport.handshakingFailure = true; + } else { + this.logger.error('Failed handshaking with signaling server', e); + this._rtcSession._sessionReport.userBusyFailure = false; + this._rtcSession._sessionReport.handshakingFailure = true; + reason = _rtc_const.RTC_ERRORS.SIGNALLING_HANDSHAKE_FAILURE; + } + this.transit(new FailedState(this._rtcSession, reason)); + } + }, { + key: 'name', + get: function get() { + return "InviteAnswerState"; + } + }]); + return InviteAnswerState; +}(RTCSessionState); + +var AcceptState = exports.AcceptState = function (_RTCSessionState6) { + (0, _inherits3.default)(AcceptState, _RTCSessionState6); + + function AcceptState(rtcSession, sdp, candidates) { + (0, _classCallCheck3.default)(this, AcceptState); + + var _this6 = (0, _possibleConstructorReturn3.default)(this, (AcceptState.__proto__ || Object.getPrototypeOf(AcceptState)).call(this, rtcSession)); + + _this6._sdp = sdp; + _this6._candidates = candidates; + return _this6; + } + + (0, _createClass3.default)(AcceptState, [{ + key: '_createSessionDescription', + value: function _createSessionDescription(initDict) { + return new RTCSessionDescription(initDict); + } + }, { + key: '_createRemoteCandidate', + value: function _createRemoteCandidate(initDict) { + return new RTCIceCandidate(initDict); + } + }, { + key: 'onEnter', + value: function onEnter() { + var self = this; + var rtcSession = self._rtcSession; + + if (!self._sdp) { + self.logger.error('Invalid remote SDP'); + rtcSession._stopSession(); + rtcSession._sessionReport.invalidRemoteSDPFailure = true; + self.transit(new FailedState(rtcSession, _rtc_const.RTC_ERRORS.INVALID_REMOTE_SDP)); + return; + } else if (!self._candidates || self._candidates.length < 1) { + self.logger.error('No remote ICE candidate'); + rtcSession._stopSession(); + rtcSession._sessionReport.noRemoteIceCandidateFailure = true; + self.transit(new FailedState(rtcSession, _rtc_const.RTC_ERRORS.NO_REMOTE_ICE_CANDIDATE)); + return; + } + + rtcSession._sessionReport.invalidRemoteSDPFailure = false; + rtcSession._sessionReport.noRemoteIceCandidateFailure = false; + var setRemoteDescriptionPromise = rtcSession._pc.setRemoteDescription(self._createSessionDescription({ + type: 'answer', + sdp: self._sdp + })); + setRemoteDescriptionPromise.catch(function (e) { + self.logger.error('SetRemoteDescription failed', e); + }); + setRemoteDescriptionPromise.then(function () { + var remoteCandidatePromises = Promise.all(self._candidates.map(function (candidate) { + var remoteCandidate = self._createRemoteCandidate(candidate); + self.logger.info('Adding remote candidate', remoteCandidate); + return rtcSession._pc.addIceCandidate(remoteCandidate); + })); + remoteCandidatePromises.catch(function (reason) { + self.logger.warn('Error adding remote candidate', reason); + }); + return remoteCandidatePromises; + }).then(function () { + rtcSession._sessionReport.setRemoteDescriptionFailure = false; + self._remoteDescriptionSet = true; + self._checkAndTransit(); + }).catch(function () { + rtcSession._stopSession(); + rtcSession._sessionReport.setRemoteDescriptionFailure = true; + self.transit(new FailedState(rtcSession, _rtc_const.RTC_ERRORS.SET_REMOTE_DESCRIPTION_FAILURE)); + }); + } + }, { + key: 'onSignalingHandshaked', + value: function onSignalingHandshaked() { + this._rtcSession._sessionReport.handshakingTimeMillis = Date.now() - this._rtcSession._signallingConnectTimestamp; + this._signalingHandshaked = true; + this._checkAndTransit(); + } + }, { + key: '_checkAndTransit', + value: function _checkAndTransit() { + if (this._signalingHandshaked && this._remoteDescriptionSet) { + this.transit(new TalkingState(this._rtcSession)); + } else if (!this._signalingHandshaked) { + this.logger.log('Pending handshaking'); + } else { + //implies _remoteDescriptionSet == false + this.logger.log('Pending setting remote description'); + } + } + }, { + key: 'name', + get: function get() { + return "AcceptState"; + } + }]); + return AcceptState; +}(RTCSessionState); + +var TalkingState = exports.TalkingState = function (_RTCSessionState7) { + (0, _inherits3.default)(TalkingState, _RTCSessionState7); + + function TalkingState() { + (0, _classCallCheck3.default)(this, TalkingState); + return (0, _possibleConstructorReturn3.default)(this, (TalkingState.__proto__ || Object.getPrototypeOf(TalkingState)).apply(this, arguments)); + } + + (0, _createClass3.default)(TalkingState, [{ + key: 'onEnter', + value: function onEnter() { + this._startTime = Date.now(); + this._rtcSession._sessionReport.preTalkingTimeMillis = this._startTime - this._rtcSession._connectTimeStamp; + this._rtcSession._onSessionConnected(this._rtcSession); + } + }, { + key: 'onSignalingReconnected', + value: function onSignalingReconnected() {} + }, { + key: 'onRemoteHungup', + value: function onRemoteHungup() { + this._rtcSession._signalingChannel.hangup(); + this.transit(new DisconnectedState(this._rtcSession)); + } + }, { + key: 'hangup', + value: function hangup() { + this._rtcSession._signalingChannel.hangup(); + this.transit(new DisconnectedState(this._rtcSession)); + } + }, { + key: 'onIceStateChange', + value: function onIceStateChange(evt) { + if (evt.currentTarget.iceConnectionState == 'disconnected') { + this.logger.info('Lost ICE connection'); + this._rtcSession._sessionReport.iceConnectionsLost += 1; + } + } + }, { + key: 'onExit', + value: function onExit() { + this._rtcSession._sessionReport.talkingTimeMillis = Date.now() - this._startTime; + this._rtcSession._detachMedia(); + this._rtcSession._sessionReport.sessionEndTime = new Date(); + this._rtcSession._onSessionCompleted(this._rtcSession); + } + }, { + key: 'name', + get: function get() { + return "TalkingState"; + } + }]); + return TalkingState; +}(RTCSessionState); + +var CleanUpState = exports.CleanUpState = function (_RTCSessionState8) { + (0, _inherits3.default)(CleanUpState, _RTCSessionState8); + + function CleanUpState() { + (0, _classCallCheck3.default)(this, CleanUpState); + return (0, _possibleConstructorReturn3.default)(this, (CleanUpState.__proto__ || Object.getPrototypeOf(CleanUpState)).apply(this, arguments)); + } + + (0, _createClass3.default)(CleanUpState, [{ + key: 'onEnter', + value: function onEnter() { + this._startTime = Date.now(); + this._rtcSession._stopSession(); + this._rtcSession._sessionReport.cleanupTimeMillis = Date.now() - this._startTime; + this._rtcSession._onSessionDestroyed(this._rtcSession, this._rtcSession._sessionReport); + } + }, { + key: 'hangup', + value: function hangup() { + //do nothing, already at the end of lifecycle + } + }, { + key: 'name', + get: function get() { + return "CleanUpState"; + } + }]); + return CleanUpState; +}(RTCSessionState); + +var DisconnectedState = exports.DisconnectedState = function (_CleanUpState) { + (0, _inherits3.default)(DisconnectedState, _CleanUpState); + + function DisconnectedState() { + (0, _classCallCheck3.default)(this, DisconnectedState); + return (0, _possibleConstructorReturn3.default)(this, (DisconnectedState.__proto__ || Object.getPrototypeOf(DisconnectedState)).apply(this, arguments)); + } + + (0, _createClass3.default)(DisconnectedState, [{ + key: 'name', + get: function get() { + return "DisconnectedState"; + } + }]); + return DisconnectedState; +}(CleanUpState); + +var FailedState = exports.FailedState = function (_CleanUpState2) { + (0, _inherits3.default)(FailedState, _CleanUpState2); + + function FailedState(rtcSession, failureReason) { + (0, _classCallCheck3.default)(this, FailedState); + + var _this10 = (0, _possibleConstructorReturn3.default)(this, (FailedState.__proto__ || Object.getPrototypeOf(FailedState)).call(this, rtcSession)); + + _this10._failureReason = failureReason; + return _this10; + } + + (0, _createClass3.default)(FailedState, [{ + key: 'onEnter', + value: function onEnter() { + this._rtcSession._sessionReport.sessionEndTime = new Date(); + this._rtcSession._onSessionFailed(this._rtcSession, this._failureReason); + (0, _get3.default)(FailedState.prototype.__proto__ || Object.getPrototypeOf(FailedState.prototype), 'onEnter', this).call(this); + } + }, { + key: 'name', + get: function get() { + return "FailedState"; + } + }]); + return FailedState; +}(CleanUpState); + +var RtcSession = function () { + /** + * Build an AmazonConnect RTC session. + * @param {*} signalingUri + * @param {*} iceServers Array of ice servers + * @param {*} contactToken A string representing the contact token (optional) + * @param {*} logger An object provides logging functions, such as console + * @param {*} contactId Must be UUID, uniquely identifies the session. + */ + function RtcSession(signalingUri, iceServers, contactToken, logger, contactId) { + (0, _classCallCheck3.default)(this, RtcSession); + + if (typeof signalingUri !== 'string' || signalingUri.trim().length === 0) { + throw new _exceptions.IllegalParameters('signalingUri required'); + } + if (!iceServers) { + throw new _exceptions.IllegalParameters('iceServers required'); + } + if ((typeof logger === 'undefined' ? 'undefined' : (0, _typeof3.default)(logger)) !== 'object') { + throw new _exceptions.IllegalParameters('logger required'); + } + if (!contactId) { + this._callId = (0, _v2.default)(); + } else { + this._callId = contactId; + } + + this._sessionReport = new _session_report.SessionReport(); + this._signalingUri = signalingUri; + this._iceServers = iceServers; + this._contactToken = contactToken; + this._originalLogger = logger; + this._logger = (0, _utils.wrapLogger)(this._originalLogger, this._callId, 'SESSION'); + this._iceTimeoutMillis = _rtc_const.DEFAULT_ICE_TIMEOUT_MS; + this._gumTimeoutMillis = _rtc_const.DEFAULT_GUM_TIMEOUT_MS; + + this._enableAudio = true; + this._enableVideo = false; + this._facingMode = 'user'; + + /** + * user may provide the stream to the RtcSession directly to connect to the other end. + * user may also acquire the stream from the local device. + * This flag is used to track where the stream is acquired. + * If it's acquired from local devices, then we must close the stream when the session ends. + * If it's provided by user (rather than local camera/microphone), then we should leave it open when the + * session ends. + */ + this._userProvidedStream = false; + + this._onGumError = this._onGumSuccess = this._onLocalStreamAdded = this._onSessionFailed = this._onSessionInitialized = this._onSignalingConnected = this._onIceCollectionComplete = this._onSignalingStarted = this._onSessionConnected = this._onRemoteStreamAdded = this._onSessionCompleted = this._onSessionDestroyed = function () {}; + } + + (0, _createClass3.default)(RtcSession, [{ + key: 'pauseLocalVideo', + value: function pauseLocalVideo() { + if (this._localStream) { + var videoTrack = this._localStream.getVideoTracks()[0]; + if (videoTrack) { + videoTrack.enabled = false; + } + } + } + }, { + key: 'resumeLocalVideo', + value: function resumeLocalVideo() { + if (this._localStream) { + var videoTrack = this._localStream.getVideoTracks()[0]; + if (videoTrack) { + videoTrack.enabled = true; + } + } + } + }, { + key: 'pauseRemoteVideo', + value: function pauseRemoteVideo() { + if (this._remoteVideoStream) { + var videoTrack = this._remoteVideoStream.getTracks()[1]; + if (videoTrack) { + videoTrack.enabled = false; + } + } + } + }, { + key: 'resumeRemoteVideo', + value: function resumeRemoteVideo() { + if (this._remoteVideoStream) { + var videoTrack = this._remoteVideoStream.getTracks()[1]; + if (videoTrack) { + videoTrack.enabled = true; + } + } + } + }, { + key: 'pauseLocalAudio', + value: function pauseLocalAudio() { + if (this._localStream) { + var audioTrack = this._localStream.getAudioTracks()[0]; + if (audioTrack) { + audioTrack.enabled = false; + } + } + } + }, { + key: 'resumeLocalAudio', + value: function resumeLocalAudio() { + if (this._localStream) { + var audioTrack = this._localStream.getAudioTracks()[0]; + if (audioTrack) { + audioTrack.enabled = true; + } + } + } + }, { + key: 'pauseRemoteAudio', + value: function pauseRemoteAudio() { + if (this._remoteAudioStream) { + var audioTrack = this._remoteAudioStream.getTracks()[0]; + if (audioTrack) { + audioTrack.enabled = false; + } + } + } + }, { + key: 'resumeRemoteAudio', + value: function resumeRemoteAudio() { + if (this._remoteAudioStream) { + var audioTrack = this._remoteAudioStream.getTracks()[0]; + if (audioTrack) { + audioTrack.enabled = true; + } + } + } + /** + * Callback when gUM succeeds. + * First param is RtcSession object. + */ + + }, { + key: 'transit', + value: function transit(nextState) { + try { + this._logger.info((this._state ? this._state.name : 'null') + ' => ' + nextState.name); + if (this._state && this._state.onExit) { + this._state.onExit(); + } + } finally { + this._state = nextState; + if (nextState.onEnter) { + try { + nextState.onEnter(); + } catch (e) { + this._logger.warn(nextState.name + '#onEnter failed', e); + throw e; // eslint-disable-line no-unsafe-finally + } + } + } + } + }, { + key: '_createSignalingChannel', + value: function _createSignalingChannel() { + var signalingChannel = new _signaling2.default(this._callId, this._signalingUri, this._contactToken, this._originalLogger, this._signalingConnectTimeout); + signalingChannel.onConnected = (0, _utils.hitch)(this, this._signalingConnected); + signalingChannel.onAnswered = (0, _utils.hitch)(this, this._signalingAnswered); + signalingChannel.onHandshaked = (0, _utils.hitch)(this, this._signalingHandshaked); + signalingChannel.onRemoteHungup = (0, _utils.hitch)(this, this._signalingRemoteHungup); + signalingChannel.onFailed = (0, _utils.hitch)(this, this._signalingFailed); + signalingChannel.onDisconnected = (0, _utils.hitch)(this, this._signalingDisconnected); + + this._signalingChannel = signalingChannel; + + return signalingChannel; + } + }, { + key: '_signalingConnected', + value: function _signalingConnected() { + this._state.onSignalingConnected(); + } + }, { + key: '_signalingAnswered', + value: function _signalingAnswered(sdp, candidates) { + this._state.onSignalingAnswered(sdp, candidates); + } + }, { + key: '_signalingHandshaked', + value: function _signalingHandshaked() { + this._state.onSignalingHandshaked(); + } + }, { + key: '_signalingRemoteHungup', + value: function _signalingRemoteHungup() { + this._state.onRemoteHungup(); + } + }, { + key: '_signalingFailed', + value: function _signalingFailed(e) { + this._state.onSignalingFailed(e); + } + }, { + key: '_signalingDisconnected', + value: function _signalingDisconnected() {} + }, { + key: '_createPeerConnection', + value: function _createPeerConnection(configuration) { + return new RTCPeerConnection(configuration); + } + }, { + key: 'connect', + value: function connect() { + var self = this; + var now = new Date(); + self._sessionReport.sessionStartTime = now; + self._connectTimeStamp = now.getTime(); + + self._pc = self._createPeerConnection({ + iceServers: self._iceServers, + iceTransportPolicy: 'relay', + rtcpMuxPolicy: 'require', + bundlePolicy: 'balanced', + sdpSemantics: 'plan-b' + }, { + optional: [{ + googDscp: true + }] + }); + + self._pc.ontrack = (0, _utils.hitch)(self, self._ontrack); + self._pc.onicecandidate = (0, _utils.hitch)(self, self._onIceCandidate); + self._pc.oniceconnectionstatechange = (0, _utils.hitch)(self, self._onIceStateChange); + + self.transit(new GrabLocalMediaState(self)); + } + }, { + key: 'accept', + value: function accept() { + throw new _exceptions.UnsupportedOperation('accept does not go through signaling channel at this moment'); + } + }, { + key: 'hangup', + value: function hangup() { + this._state.hangup(); + } + + /** + * Get a promise containing an object with two named lists of audio stats, one for each channel on each + * media type of 'video' and 'audio'. + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + */ + + }, { + key: 'getStats', + value: function () { + var _ref = (0, _asyncToGenerator3.default)( /*#__PURE__*/_regenerator2.default.mark(function _callee3() { + var _this11 = this; + + var timestamp, impl, statsResult, rttReducer, audioInputRttMilliseconds, videoInputRttMilliseconds; + return _regenerator2.default.wrap(function _callee3$(_context3) { + while (1) { + switch (_context3.prev = _context3.next) { + case 0: + timestamp = new Date(); + + impl = function () { + var _ref2 = (0, _asyncToGenerator3.default)( /*#__PURE__*/_regenerator2.default.mark(function _callee2(stream, streamType) { + var tracks; + return _regenerator2.default.wrap(function _callee2$(_context2) { + while (1) { + switch (_context2.prev = _context2.next) { + case 0: + tracks = []; + + if (stream) { + _context2.next = 3; + break; + } + + return _context2.abrupt('return', []); + + case 3: + _context2.t0 = streamType; + _context2.next = _context2.t0 === 'audio_input' ? 6 : _context2.t0 === 'audio_output' ? 6 : _context2.t0 === 'video_input' ? 8 : _context2.t0 === 'video_output' ? 8 : 10; + break; + + case 6: + tracks = stream.getAudioTracks(); + return _context2.abrupt('break', 11); + + case 8: + tracks = stream.getVideoTracks(); + return _context2.abrupt('break', 11); + + case 10: + throw new Error('Unsupported stream type while trying to get stats: ' + streamType); + + case 11: + _context2.next = 13; + return Promise.all(tracks.map(function () { + var _ref3 = (0, _asyncToGenerator3.default)( /*#__PURE__*/_regenerator2.default.mark(function _callee(track) { + var rawStats, digestedStats; + return _regenerator2.default.wrap(function _callee$(_context) { + while (1) { + switch (_context.prev = _context.next) { + case 0: + _context.next = 2; + return _this11._pc.getStats(track); + + case 2: + rawStats = _context.sent; + digestedStats = (0, _rtpStats.extractMediaStatsFromStats)(timestamp, rawStats, streamType); + + if (digestedStats) { + _context.next = 6; + break; + } + + throw new Error('Failed to extract MediaRtpStats from RTCStatsReport for stream type ' + streamType); + + case 6: + return _context.abrupt('return', digestedStats); + + case 7: + case 'end': + return _context.stop(); + } + } + }, _callee, _this11); + })); + + return function (_x3) { + return _ref3.apply(this, arguments); + }; + }())); + + case 13: + return _context2.abrupt('return', _context2.sent); + + case 14: + case 'end': + return _context2.stop(); + } + } + }, _callee2, _this11); + })); + + return function impl(_x, _x2) { + return _ref2.apply(this, arguments); + }; + }(); + + if (!(this._pc && this._pc.signalingState === 'stable')) { + _context3.next = 26; + break; + } + + _context3.next = 5; + return impl(this._remoteAudioStream, 'audio_input'); + + case 5: + _context3.t0 = _context3.sent; + _context3.next = 8; + return impl(this._localStream, 'audio_output'); + + case 8: + _context3.t1 = _context3.sent; + _context3.t2 = { + input: _context3.t0, + output: _context3.t1 + }; + _context3.next = 12; + return impl(this._remoteVideoStream, 'video_input'); + + case 12: + _context3.t3 = _context3.sent; + _context3.next = 15; + return impl(this._localStream, 'video_output'); + + case 15: + _context3.t4 = _context3.sent; + _context3.t5 = { + input: _context3.t3, + output: _context3.t4 + }; + statsResult = { + audio: _context3.t2, + video: _context3.t5 + }; + + // For consistency's sake, coalesce rttMilliseconds into the output for audio and video. + rttReducer = function rttReducer(acc, stats) { + if (stats.rttMilliseconds !== null && (acc === null || stats.rttMilliseconds > acc)) { + acc = stats.rttMilliseconds; + } + stats._rttMilliseconds = null; + return acc; + }; + + audioInputRttMilliseconds = statsResult.audio.input.reduce(rttReducer, null); + videoInputRttMilliseconds = statsResult.video.input.reduce(rttReducer, null); + + + if (audioInputRttMilliseconds !== null) { + statsResult.audio.output.forEach(function (stats) { + stats._rttMilliseconds = audioInputRttMilliseconds; + }); + } + + if (videoInputRttMilliseconds !== null) { + statsResult.video.output.forEach(function (stats) { + stats._rttMilliseconds = videoInputRttMilliseconds; + }); + } + + return _context3.abrupt('return', statsResult); + + case 26: + return _context3.abrupt('return', Promise.reject(new _exceptions.IllegalState())); + + case 27: + case 'end': + return _context3.stop(); + } + } + }, _callee3, this); + })); + + function getStats() { + return _ref.apply(this, arguments); + } + + return getStats; + }() + + /** + * Get a promise of MediaRtpStats object for remote audio (from Amazon Connect to client). + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + * @deprecated in favor of getStats() + */ + + }, { + key: 'getRemoteAudioStats', + value: function getRemoteAudioStats() { + return this.getStats().then(function (stats) { + if (stats.audio.output.length > 0) { + return stats.audio.output[0]; + } else { + return Promise.reject(new _exceptions.IllegalState()); + } + }); + } + + /** + * Get a promise of MediaRtpStats object for user audio (from client to Amazon Connect). + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + * @deprecated in favor of getStats() + */ + + }, { + key: 'getUserAudioStats', + value: function getUserAudioStats() { + return this.getStats().then(function (stats) { + if (stats.audio.input.length > 0) { + return stats.audio.input[0]; + } else { + return Promise.reject(new _exceptions.IllegalState()); + } + }); + } + + /** + * Get a promise of MediaRtpStats object for user video (from client to Amazon Connect). + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + * @deprecated in favor of getStats() + */ + + }, { + key: 'getRemoteVideoStats', + value: function getRemoteVideoStats() { + return this.getStats().then(function (stats) { + if (stats.video.output.length > 0) { + return stats.video.output[0]; + } else { + return Promise.reject(new _exceptions.IllegalState()); + } + }); + } + + /** + * Get a promise of MediaRtpStats object for user video (from client to Amazon Connect). + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + * @deprecated in favor of getStats() + */ + + }, { + key: 'getUserVideoStats', + value: function getUserVideoStats() { + return this.getStats().then(function (stats) { + if (stats.video.input.length > 0) { + return stats.video.input[0]; + } else { + return Promise.reject(new _exceptions.IllegalState()); + } + }); + } + }, { + key: '_onIceCandidate', + value: function _onIceCandidate(evt) { + this._state.onIceCandidate(evt); + } + }, { + key: '_onIceStateChange', + value: function _onIceStateChange(evt) { + this._state.onIceStateChange(evt); + } + + /** + * Attach remote media stream to web element. + */ + + }, { + key: '_ontrack', + value: function _ontrack(evt) { + if (evt.streams.length > 1) { + this._logger.warn('Found more than 1 streams for ' + evt.track.kind + ' track ' + evt.track.id + ' : ' + evt.streams.map(function (stream) { + return stream.id; + }).join(',')); + } + if (evt.track.kind === 'video' && this._remoteVideoElement) { + this._remoteVideoElement.srcObject = evt.streams[0]; + this._remoteVideoStream = evt.streams[0]; + } else if (evt.track.kind === 'audio' && this._remoteAudioElement) { + this._remoteAudioElement.srcObject = evt.streams[0]; + this._remoteAudioStream = evt.streams[0]; + } + this._onRemoteStreamAdded(this, evt.streams[0]); + } + }, { + key: '_detachMedia', + value: function _detachMedia() { + if (this._remoteVideoElement) { + this._remoteVideoElement.srcObject = null; + } + if (this._remoteAudioElement) { + this._remoteAudioElement.srcObject = null; + this._remoteAudioStream = null; + } + } + }, { + key: '_stopSession', + value: function _stopSession() { + try { + if (this._localStream && !this._userProvidedStream) { + (0, _utils.closeStream)(this._localStream); + this._localStream = null; + this._userProvidedStream = false; + } + } finally { + try { + if (this._pc) { + this._pc.close(); + } + } catch (e) { + // eat exception + } finally { + this._pc = null; + } + } + } + }, { + key: '_buildMediaConstraints', + value: function _buildMediaConstraints() { + var self = this; + var mediaConstraints = {}; + + if (self._enableAudio) { + var audioConstraints = {}; + if (typeof self._echoCancellation !== 'undefined') { + audioConstraints.echoCancellation = !!self._echoCancellation; + } + if (Object.keys(audioConstraints).length > 0) { + mediaConstraints.audio = audioConstraints; + } else { + mediaConstraints.audio = true; + } + } else { + mediaConstraints.audio = false; + } + + if (self._enableVideo) { + var videoConstraints = {}; + var widthConstraints = {}; + var heightConstraints = {}; + var frameRateConstraints = {}; + + //build video width constraints + if (typeof self._idealVideoWidth !== 'undefined') { + widthConstraints.ideal = self._idealVideoWidth; + } + if (typeof self._maxVideoWidth !== 'undefined') { + widthConstraints.max = self._maxVideoWidth; + } + if (typeof self._minVideoWidth !== 'undefined') { + widthConstraints.min = self._minVideoWidth; + } + // build video height constraints + if (typeof self._idealVideoHeight !== 'undefined') { + heightConstraints.ideal = self._idealVideoHeight; + } + if (typeof self._maxVideoHeight !== 'undefined') { + heightConstraints.max = self._maxVideoHeight; + } + if (typeof self._minVideoHeight !== 'undefined') { + heightConstraints.min = self._minVideoHeight; + } + if (Object.keys(widthConstraints).length > 0 && Object.keys(heightConstraints).length > 0) { + videoConstraints.width = widthConstraints; + videoConstraints.height = heightConstraints; + } + // build frame rate constraints + if (typeof self._videoFrameRate !== 'undefined') { + frameRateConstraints.ideal = self._videoFrameRate; + } + if (typeof self._minVideoFrameRate !== 'undefined') { + frameRateConstraints.min = self._minVideoFrameRate; + } + if (typeof self._maxVideoFrameRate !== 'undefined') { + frameRateConstraints.max = self._maxVideoFrameRate; + } + if (Object.keys(frameRateConstraints).length > 0) { + videoConstraints.frameRate = frameRateConstraints; + } + + // build facing mode constraints + if (self._facingMode !== 'user' && self._facingMode !== "environment") { + self._facingMode = 'user'; + } + videoConstraints.facingMode = self._facingMode; + + // set video constraints + if (Object.keys(videoConstraints).length > 0) { + mediaConstraints.video = videoConstraints; + } else { + mediaConstraints.video = true; + } + } + + return mediaConstraints; + } + }, { + key: 'sessionReport', + get: function get() { + return this._sessionReport; + } + }, { + key: 'callId', + get: function get() { + return this._callId; + } + /** + * getMediaStream returns the local stream, which may be acquired from local device or from user provided stream. + * Rather than getting a stream by calling getUserMedia (which gets a stream from local device such as camera), + * user could also provide the stream to the RtcSession directly to connect to the other end. + */ + + }, { + key: 'mediaStream', + get: function get() { + return this._localStream; + }, + + /** + * Optional. RtcSession will grab input device if this is not specified. + * Please note: this RtcSession class only support single audio track and/or single video track. + */ + set: function set(input) { + this._localStream = input; + this._userProvidedStream = true; + } + /** + * Needed, expect an audio element that can be used to play remote audio stream. + */ + + }, { + key: 'remoteVideoStream', + get: function get() { + return this._remoteVideoStream; + } + }, { + key: 'onGumSuccess', + set: function set(handler) { + this._onGumSuccess = handler; + } + /** + * Callback when gUM fails. + * First param is RtcSession object. + * Second param is the error. + */ + + }, { + key: 'onGumError', + set: function set(handler) { + this._onGumError = handler; + } + /** + * Callback if failed initializing local resources + * First param is RtcSession object. + */ + + }, { + key: 'onSessionFailed', + set: function set(handler) { + this._onSessionFailed = handler; + } + /** + * Callback after local user media stream is added to the session. + * First param is RtcSession object. + * Second param is media stream + */ + + }, { + key: 'onLocalStreamAdded', + set: function set(handler) { + this._onLocalStreamAdded = handler; + } + /** + * Callback when all local resources are ready. Establishing signaling chanel and ICE collection happens at the same time after this. + * First param is RtcSession object. + */ + + }, { + key: 'onSessionInitialized', + set: function set(handler) { + this._onSessionInitialized = handler; + } + /** + * Callback when signaling channel is established. + * RTC session will move forward only if onSignalingConnected and onIceCollectionComplete are both called. + * + * First param is RtcSession object. + */ + + }, { + key: 'onSignalingConnected', + set: function set(handler) { + this._onSignalingConnected = handler; + } + /** + * Callback when ICE collection completes either because there is no more candidate or collection timed out. + * RTC session will move forward only if onSignalingConnected and onIceCollectionComplete are both called. + * + * First param is RtcSession object. + * Second param is boolean, TRUE - ICE collection timed out. + * Third param is number of candidates collected. + */ + + }, { + key: 'onIceCollectionComplete', + set: function set(handler) { + this._onIceCollectionComplete = handler; + } + /** + * Callback when signaling channel is established and ICE collection completed with at least one candidate. + * First param is RtcSession object. + */ + + }, { + key: 'onSignalingStarted', + set: function set(handler) { + this._onSignalingStarted = handler; + } + /** + * Callback when the call is established (handshaked and media stream should be flowing) + * First param is RtcSession object. + */ + + }, { + key: 'onSessionConnected', + set: function set(handler) { + this._onSessionConnected = handler; + } + /** + * Callback after remote media stream is added to the session. + * This could be called multiple times with the same stream if multiple tracks are included in the same stream. + * + * First param is RtcSession object. + * Second param is media stream track. + */ + + }, { + key: 'onRemoteStreamAdded', + set: function set(handler) { + this._onRemoteStreamAdded = handler; + } + /** + * Callback when the hangup is initiated (implies the call was successfully established). + * First param is RtcSession object. + */ + + }, { + key: 'onSessionCompleted', + set: function set(handler) { + this._onSessionCompleted = handler; + } + /** + * Callback after session is cleaned up, no matter if the call was successfully established or not. + * First param is RtcSession object. + * Second param is SessionReport object. + */ + + }, { + key: 'onSessionDestroyed', + set: function set(handler) { + this._onSessionDestroyed = handler; + } + }, { + key: 'enableAudio', + set: function set(flag) { + this._enableAudio = flag; + } + }, { + key: 'echoCancellation', + set: function set(flag) { + this._echoCancellation = flag; + } + }, { + key: 'enableVideo', + set: function set(flag) { + this._enableVideo = flag; + } + }, { + key: 'maxVideoFrameRate', + set: function set(frameRate) { + this._maxVideoFrameRate = frameRate; + } + }, { + key: 'minVideoFrameRate', + set: function set(frameRate) { + this._minVideoFrameRate = frameRate; + } + }, { + key: 'videoFrameRate', + set: function set(frameRate) { + this._videoFrameRate = frameRate; + } + }, { + key: 'maxVideoWidth', + set: function set(width) { + this._maxVideoWidth = width; + } + }, { + key: 'minVideoWidth', + set: function set(width) { + this._minVideoWidth = width; + } + }, { + key: 'idealVideoWidth', + set: function set(width) { + this._idealVideoWidth = width; + } + }, { + key: 'maxVideoHeight', + set: function set(height) { + this._maxVideoHeight = height; + } + }, { + key: 'minVideoHeight', + set: function set(height) { + this._minVideoHeight = height; + } + }, { + key: 'idealVideoHeight', + set: function set(height) { + this._idealVideoHeight = height; + } + }, { + key: 'facingMode', + set: function set(mode) { + this._facingMode = mode; + } + }, { + key: 'remoteAudioElement', + set: function set(element) { + this._remoteAudioElement = element; + } + }, { + key: 'remoteVideoElement', + set: function set(element) { + this._remoteVideoElement = element; + } + /** + * Override the default signaling connect time out. + */ + + }, { + key: 'signalingConnectTimeout', + set: function set(ms) { + this._signalingConnectTimeout = ms; + } + /** + * Override the default ICE collection time limit. + */ + + }, { + key: 'iceTimeoutMillis', + set: function set(timeoutMillis) { + this._iceTimeoutMillis = timeoutMillis; + } + + /** + * Override the default GUM timeout time limit. + */ + + }, { + key: 'gumTimeoutMillis', + set: function set(timeoutMillis) { + this._gumTimeoutMillis = timeoutMillis; + } + + /** + * connect-rtc-js initiate the handshaking with all browser supported codec by default, Amazon Connect service will choose the codec according to its preference setting. + * Setting this attribute will force connect-rtc-js to only use specified codec. + * WARNING: Setting this to unsupported codec will cause the failure of handshaking. + * Supported audio codecs: opus. + */ + + }, { + key: 'forceAudioCodec', + set: function set(audioCodec) { + this._forceAudioCodec = audioCodec; + } + + /** + * connect-rtc-js initiate the handshaking with all browser supported codec by default, Amazon Connect service will choose the codec according to its preference setting. + * Setting this attribute will force connect-rtc-js to only use specified codec. + * WARNING: Setting this to unsupported codec will cause the failure of handshaking. + * Supported video codecs: VP8, VP9, H264. + */ + + }, { + key: 'forceVideoCodec', + set: function set(videoCodec) { + this._forceVideoCodec = videoCodec; + } + + /** + * connect-rtc-js disables OPUS DTX by default because it harms audio quality. + * @param flag boolean + */ + + }, { + key: 'enableOpusDtx', + set: function set(flag) { + this._enableOpusDtx = flag; + } + }]); + return RtcSession; +}(); + +exports.default = RtcSession; + +},{"./exceptions":130,"./rtc_const":131,"./rtp-stats":133,"./session_report":134,"./signaling":135,"./utils":136,"babel-runtime/helpers/asyncToGenerator":9,"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11,"babel-runtime/helpers/get":12,"babel-runtime/helpers/inherits":13,"babel-runtime/helpers/possibleConstructorReturn":14,"babel-runtime/helpers/typeof":15,"babel-runtime/regenerator":16,"sdp":116,"uuid/v4":119}],133:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require('babel-runtime/helpers/createClass'); + +var _createClass3 = _interopRequireDefault(_createClass2); + +exports.extractMediaStatsFromStats = extractMediaStatsFromStats; + +var _utils = require('./utils'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +function extractMediaStatsFromStats(timestamp, stats, streamType) { + var extractedStats = null; + + for (var key in stats) { + var statsReport = stats[key]; + if (statsReport) { + if (statsReport.type === 'ssrc') { + //chrome, opera case. chrome reports stats for all streams, not just the stream passed in. + if ((0, _utils.is_defined)(statsReport.packetsSent) && statsReport.mediaType == 'audio' && streamType === 'audio_input') { + extractedStats = { + timestamp: timestamp, + packetsCount: statsReport.packetsSent, + bytesSent: statsReport.bytesSent, + audioLevel: (0, _utils.when_defined)(statsReport.audioInputLevel), + packetsLost: (0, _utils.is_defined)(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0, + procMilliseconds: (0, _utils.is_defined)(statsReport.googCurrentDelayMs), + rttMilliseconds: (0, _utils.when_defined)(statsReport.googRtt) + }; + } else if ((0, _utils.is_defined)(statsReport.packetsReceived) && statsReport.mediaType == 'audio' && streamType === 'audio_output') { + extractedStats = { + timestamp: timestamp, + packetsCount: statsReport.packetsReceived, + bytesReceived: statsReport.bytesReceived, + audioLevel: (0, _utils.when_defined)(statsReport.audioOutputLevel), + packetsLost: (0, _utils.is_defined)(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0, + procMilliseconds: (0, _utils.is_defined)(statsReport.googCurrentDelayMs), + jbMilliseconds: (0, _utils.when_defined)(statsReport.googJitterBufferMs) + }; + } else if ((0, _utils.is_defined)(statsReport.packetsSent) && statsReport.mediaType == 'video' && streamType === 'video_input') { + extractedStats = { + timestamp: timestamp, + packetsCount: statsReport.packetsSent, + bytesSent: statsReport.bytesSent, + packetsLost: (0, _utils.is_defined)(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0, + rttMilliseconds: (0, _utils.when_defined)(statsReport.googRtt), + procMilliseconds: (0, _utils.is_defined)(statsReport.googCurrentDelayMs), + frameRateSent: (0, _utils.when_defined)(statsReport.googFrameRateSent) + }; + } else if (typeof statsReport.packetsReceived !== 'undefined' && statsReport.mediaType == 'video' && streamType === 'video_output') { + extractedStats = { + timestamp: timestamp, + packetsCount: statsReport.packetsSent, + bytesReceived: statsReport.bytesReceived, + packetsLost: (0, _utils.is_defined)(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0, + frameRateReceived: (0, _utils.when_defined)(statsReport.googFrameRateReceived), + procMilliseconds: (0, _utils.is_defined)(statsReport.googCurrentDelayMs), + jbMilliseconds: (0, _utils.when_defined)(statsReport.googJitterBufferMs) + }; + } + } else if (statsReport.type === 'inboundrtp') { + // Firefox case. Firefox reports packetsLost parameter only in inboundrtp type, and doesn't report in outboundrtp type. + // So we only pull from inboundrtp. Firefox reports only stats for the stream passed in. + if ((0, _utils.is_defined)(statsReport.packetsLost) && (0, _utils.is_defined)(statsReport.packetsReceived)) { + extractedStats = { + packetsLost: statsReport.packetsLost, + packetsCount: statsReport.packetsReceived, + audioLevel: (0, _utils.when_defined)(statsReport.audioInputLevel), + rttMilliseconds: streamType === 'audio_ouptut' || streamType === 'video_output' ? (0, _utils.when_defined)(statsReport.roundTripTime) : null, + jbMilliseconds: streamType === 'audio_output' || streamType === 'video_output' ? (0, _utils.when_defined)(statsReport.jitter, 0) * 1000 : null + }; + } + } + } + } + + return extractedStats ? new MediaRtpStats(extractedStats, statsReport.type, streamType) : null; +} + +/** +* Basic RTP statistics object, represents statistics of an audio or video stream. +*/ +/** +* Extract rtp stats of specified stream from RTCStatsReport +* Chrome reports all stream stats in statsReports whereas firefox reports only single stream stats in report +* StreamType is passed only to pull right stream stats audio_input or audio_output. +*/ + +var MediaRtpStats = function () { + function MediaRtpStats(paramsIn, statsReportType, streamType) { + (0, _classCallCheck3.default)(this, MediaRtpStats); + + var params = paramsIn || {}; + + this._timestamp = params.timestamp || new Date().getTime(); + this._packetsLost = (0, _utils.when_defined)(params.packetsLost); + this._packetsCount = (0, _utils.when_defined)(params.packetsCount); + this._audioLevel = (0, _utils.when_defined)(params.audioLevel); + this._rttMilliseconds = (0, _utils.when_defined)(params.rttMilliseconds); + this._jbMilliseconds = (0, _utils.when_defined)(params.jbMilliseconds); + this._bytesSent = (0, _utils.when_defined)(params.bytesSent); + this._bytesReceived = (0, _utils.when_defined)(params.bytesReceived); + this._framesEncoded = (0, _utils.when_defined)(params.framesEncoded); + this._framesDecoded = (0, _utils.when_defined)(params.framesDecoded); + this._frameRateSent = (0, _utils.when_defined)(params.frameRateSent); + this._frameRateReceived = (0, _utils.when_defined)(params.frameRateReceived); + this._statsReportType = statsReportType || params._statsReportType || "unknown"; + this._streamType = streamType || params.streamType || "unknown"; + } + + /** {number} number of packets sent to the channel */ + + + (0, _createClass3.default)(MediaRtpStats, [{ + key: 'packetsCount', + get: function get() { + return this._packetsCount; + } + /** {number} number of packets lost after travelling through the channel */ + + }, { + key: 'packetsLost', + get: function get() { + return this._packetsLost; + } + /** {number} number of packets lost after travelling through the channel */ + + }, { + key: 'packetLossPercentage', + get: function get() { + return this._packetsCount > 0 ? this._packetsLost / this._packetsCount : 0; + } + /** Audio volume level + * Currently firefox doesn't provide audio level in rtp stats. + */ + + }, { + key: 'audioLevel', + get: function get() { + return this._audioLevel; + } + /** Timestamp when stats are collected. */ + + }, { + key: 'timestamp', + get: function get() { + return this._timestamp; + } + /** {number} Round trip time calculated with RTCP reports */ + + }, { + key: 'rttMilliseconds', + get: function get() { + return this._rttMilliseconds; + } + /** {number} Browser/client side jitter buffer length */ + + }, { + key: 'jbMilliseconds', + get: function get() { + return this._jbMilliseconds; + } + /** {number} number of bytes sent to the channel*/ + + }, { + key: 'bytesSent', + get: function get() { + return this._bytesSent; + } + /** {number} number of bytes received from the channel*/ + + }, { + key: 'bytesReceived', + get: function get() { + return this._bytesReceived; + } + /** {number} number of video frames encoded*/ + + }, { + key: 'framesEncoded', + get: function get() { + return this._framesEncoded; + } + /** {number} number of video frames decoded*/ + + }, { + key: 'framesDecoded', + get: function get() { + return this._framesDecoded; + } + /** {number} frames per second sent to the channel*/ + + }, { + key: 'frameRateSent', + get: function get() { + return this._frameRateSent; + } + /** {number} frames per second received from the channel*/ + + }, { + key: 'frameRateReceived', + get: function get() { + return this._frameRateReceived; + } + /** {string} the type of the stats report */ + + }, { + key: 'statsReportType', + get: function get() { + return this._statsReportType; + } + /** {string} the type of the stream */ + + }, { + key: 'streamType', + get: function get() { + return this._streamType; + } + }]); + return MediaRtpStats; +}(); + +},{"./utils":136,"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11}],134:[function(require,module,exports){ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.SessionReport = undefined; + +var _classCallCheck2 = require("babel-runtime/helpers/classCallCheck"); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require("babel-runtime/helpers/createClass"); + +var _createClass3 = _interopRequireDefault(_createClass2); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ + +var SessionReport = exports.SessionReport = function () { + /** + * @class Prototype for tracking various RTC session report + * @constructs + */ + function SessionReport() { + (0, _classCallCheck3.default)(this, SessionReport); + + this._sessionStartTime = null; + this._sessionEndTime = null; + this._gumTimeMillis = null; + this._initializationTimeMillis = null; + this._iceCollectionTimeMillis = null; + this._signallingConnectTimeMillis = null; + this._handshakingTimeMillis = null; + this._preTalkingTimeMillis = null; + this._talkingTimeMillis = null; + this._iceConnectionsLost = 0; + this._cleanupTimeMillis = null; + this._iceCollectionFailure = null; + this._signallingConnectionFailure = null; + this._handshakingFailure = null; + this._gumOtherFailure = null; + this._gumTimeoutFailure = null; + this._createOfferFailure = null; + this._setLocalDescriptionFailure = null; + this._userBusyFailure = null; + this._invalidRemoteSDPFailure = null; + this._noRemoteIceCandidateFailure = null; + this._setRemoteDescriptionFailure = null; + this._streamStats = []; + } + /** + *Timestamp when RTCSession started. + */ + + + (0, _createClass3.default)(SessionReport, [{ + key: "sessionStartTime", + get: function get() { + return this._sessionStartTime; + } + /** + * Timestamp when RTCSession ended. + */ + , + set: function set(value) { + this._sessionStartTime = value; + } + }, { + key: "sessionEndTime", + get: function get() { + return this._sessionEndTime; + } + /** + * Time taken for grabbing user microphone at the time of connecting RTCSession. + */ + , + set: function set(value) { + this._sessionEndTime = value; + } + }, { + key: "gumTimeMillis", + get: function get() { + return this._gumTimeMillis; + } + /** + * Time taken for session initialization in millis. Includes time spent in GrabLocalMedia, SetLocalSDP states. + */ + , + set: function set(value) { + this._gumTimeMillis = value; + } + }, { + key: "initializationTimeMillis", + get: function get() { + return this._initializationTimeMillis; + } + /** + * Time spent on ICECollection in millis. + */ + , + set: function set(value) { + this._initializationTimeMillis = value; + } + }, { + key: "iceCollectionTimeMillis", + get: function get() { + return this._iceCollectionTimeMillis; + } + /** + * Time taken for connecting the signalling in millis. + */ + , + set: function set(value) { + this._iceCollectionTimeMillis = value; + } + }, { + key: "signallingConnectTimeMillis", + get: function get() { + return this._signallingConnectTimeMillis; + } + /** + * Times spent from RTCSession connection until entering Talking state in millis. + */ + , + set: function set(value) { + this._signallingConnectTimeMillis = value; + } + }, { + key: "preTalkingTimeMillis", + get: function get() { + return this._preTalkingTimeMillis; + } + /** + * Times spent in completing handshaking process of the RTCSession in millis. + */ + , + set: function set(value) { + this._preTalkingTimeMillis = value; + } + }, { + key: "handshakingTimeMillis", + get: function get() { + return this._handshakingTimeMillis; + } + /** + * Times spent in Talking state in millis. + */ + , + set: function set(value) { + this._handshakingTimeMillis = value; + } + }, { + key: "talkingTimeMillis", + get: function get() { + return this._talkingTimeMillis; + } + /** + * How many times the RTCSession has lost ICE connection in talking state. + */ + , + set: function set(value) { + this._talkingTimeMillis = value; + } + }, { + key: "iceConnectionsLost", + get: function get() { + return this._iceConnectionsLost; + } + /** + * Times spent in Cleanup state in millis + */ + , + set: function set(value) { + this._iceConnectionsLost = value; + } + }, { + key: "cleanupTimeMillis", + get: function get() { + return this._cleanupTimeMillis; + } + /** + * Tells if the RTCSession fails in ICECollection. + */ + , + set: function set(value) { + this._cleanupTimeMillis = value; + } + }, { + key: "iceCollectionFailure", + get: function get() { + return this._iceCollectionFailure; + } + /** + * Tells if the RTCSession failed in signalling connect stage. + */ + , + set: function set(value) { + this._iceCollectionFailure = value; + } + }, { + key: "signallingConnectionFailure", + get: function get() { + return this._signallingConnectionFailure; + } + /** + * Handshaking failure of the RTCSession + */ + , + set: function set(value) { + this._signallingConnectionFailure = value; + } + }, { + key: "handshakingFailure", + get: function get() { + return this._handshakingFailure; + } + /** + * Gum failed due to timeout at the time of new RTCSession connection + */ + , + set: function set(value) { + this._handshakingFailure = value; + } + }, { + key: "gumTimeoutFailure", + get: function get() { + return this._gumTimeoutFailure; + } + /** + * Gum failed due to other reasons (other than Timeout) + */ + , + set: function set(value) { + this._gumTimeoutFailure = value; + } + }, { + key: "gumOtherFailure", + get: function get() { + return this._gumOtherFailure; + } + /** + * RTC Session failed in create Offer state. + */ + , + set: function set(value) { + this._gumOtherFailure = value; + } + }, { + key: "createOfferFailure", + get: function get() { + return this._createOfferFailure; + } + /** + * Tells if setLocalDescription failed for the RTC Session. + */ + , + set: function set(value) { + this._createOfferFailure = value; + } + }, { + key: "setLocalDescriptionFailure", + get: function get() { + return this._setLocalDescriptionFailure; + } + /** + * Tells if handshaking failed due to user busy case, + * happens when multiple softphone calls are initiated at same time. + */ + , + set: function set(value) { + this._setLocalDescriptionFailure = value; + } + }, { + key: "userBusyFailure", + get: function get() { + return this._userBusyFailure; + } + /** + * Tells it remote SDP is invalid. + */ + , + set: function set(value) { + this._userBusyFailure = value; + } + }, { + key: "invalidRemoteSDPFailure", + get: function get() { + return this._invalidRemoteSDPFailure; + } + /** + * Tells if the setRemoteDescription failed for the RTC Session. + */ + , + set: function set(value) { + this._invalidRemoteSDPFailure = value; + } + }, { + key: "setRemoteDescriptionFailure", + get: function get() { + return this._setRemoteDescriptionFailure; + } + /** + * A failure case when there is no RemoteIceCandidate. + */ + , + set: function set(value) { + this._setRemoteDescriptionFailure = value; + } + }, { + key: "noRemoteIceCandidateFailure", + get: function get() { + return this._noRemoteIceCandidateFailure; + } + /** + * Statistics for each stream(audio-in, audio-out, video-in, video-out) of the RTCSession. + */ + , + set: function set(value) { + this._noRemoteIceCandidateFailure = value; + } + }, { + key: "streamStats", + get: function get() { + return this._streamStats; + }, + set: function set(value) { + this._streamStats = value; + } + }]); + return SessionReport; +}(); + +},{"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11}],135:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.FailedState = exports.DisconnectedState = exports.PendingLocalHangupState = exports.PendingRemoteHangupState = exports.PendingReconnectState = exports.TalkingState = exports.PendingAcceptAckState = exports.PendingAcceptState = exports.PendingAnswerState = exports.PendingInviteState = exports.PendingConnectState = exports.FailOnTimeoutState = exports.SignalingState = undefined; + +var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn'); + +var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2); + +var _inherits2 = require('babel-runtime/helpers/inherits'); + +var _inherits3 = _interopRequireDefault(_inherits2); + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require('babel-runtime/helpers/createClass'); + +var _createClass3 = _interopRequireDefault(_createClass2); + +var _utils = require('./utils'); + +var _rtc_const = require('./rtc_const'); + +var _exceptions = require('./exceptions'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +var reqIdSeq = 1; /** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ + +var CONNECT_MAX_RETRIES = 3; + +/** + * Abstract signaling state class. + */ + +var SignalingState = exports.SignalingState = function () { + /** + * @param {AmznRtcSignaling} signaling Signaling object. + */ + function SignalingState(signaling) { + (0, _classCallCheck3.default)(this, SignalingState); + + this._signaling = signaling; + this._createTime = new Date().getTime(); + } + + (0, _createClass3.default)(SignalingState, [{ + key: 'setStateTimeout', + value: function setStateTimeout(timeoutMs) { + setTimeout((0, _utils.hitch)(this, this._onTimeoutChecked), timeoutMs); + } + }, { + key: 'onEnter', + value: function onEnter() {} + }, { + key: '_onTimeoutChecked', + value: function _onTimeoutChecked() { + if (this.isCurrentState) { + this.onTimeout(); + } + } + }, { + key: 'onTimeout', + value: function onTimeout() { + throw new _exceptions.UnsupportedOperation(); + } + }, { + key: 'transit', + value: function transit(newState) { + this._signaling.transit(newState); + } + }, { + key: 'onExit', + value: function onExit() {} + }, { + key: 'onOpen', + value: function onOpen() { + throw new _exceptions.UnsupportedOperation('onOpen not supported by ' + this.name); + } + }, { + key: 'onError', + value: function onError() { + this.channelDown(); + } + }, { + key: 'onClose', + value: function onClose() { + this.channelDown(); + } + }, { + key: 'channelDown', + value: function channelDown() { + throw new _exceptions.UnsupportedOperation('channelDown not supported by ' + this.name); + } + }, { + key: 'onRpcMsg', + value: function onRpcMsg(rpcMsg) { + // eslint-disable-line no-unused-vars + throw new _exceptions.UnsupportedOperation('onRpcMsg not supported by ' + this.name); + } + }, { + key: 'invite', + value: function invite(sdp, iceCandidates) { + // eslint-disable-line no-unused-vars + throw new _exceptions.UnsupportedOperation('invite not supported by ' + this.name); + } + }, { + key: 'accept', + value: function accept() { + throw new _exceptions.UnsupportedOperation('accept not supported by ' + this.name); + } + }, { + key: 'hangup', + value: function hangup() { + throw new _exceptions.UnsupportedOperation('hangup not supported by ' + this.name); + } + }, { + key: 'isCurrentState', + get: function get() { + return this === this._signaling.state; + } + }, { + key: 'name', + get: function get() { + return "SignalingState"; + } + }, { + key: 'logger', + get: function get() { + return this._signaling._logger; + } + }]); + return SignalingState; +}(); + +var FailOnTimeoutState = exports.FailOnTimeoutState = function (_SignalingState) { + (0, _inherits3.default)(FailOnTimeoutState, _SignalingState); + + function FailOnTimeoutState(signaling, timeoutMs) { + (0, _classCallCheck3.default)(this, FailOnTimeoutState); + + var _this = (0, _possibleConstructorReturn3.default)(this, (FailOnTimeoutState.__proto__ || Object.getPrototypeOf(FailOnTimeoutState)).call(this, signaling)); + + _this._timeoutMs = timeoutMs; + return _this; + } + + (0, _createClass3.default)(FailOnTimeoutState, [{ + key: 'onEnter', + value: function onEnter() { + this.setStateTimeout(this._timeoutMs); + } + }, { + key: 'onTimeout', + value: function onTimeout() { + this.transit(new FailedState(this._signaling, new _exceptions.Timeout())); + } + }, { + key: 'name', + get: function get() { + return "FailOnTimeoutState"; + } + }]); + return FailOnTimeoutState; +}(SignalingState); + +var PendingConnectState = exports.PendingConnectState = function (_FailOnTimeoutState) { + (0, _inherits3.default)(PendingConnectState, _FailOnTimeoutState); + + function PendingConnectState(signaling, timeoutMs, initialStartTimeIn, retriesIn) { + (0, _classCallCheck3.default)(this, PendingConnectState); + + var _this2 = (0, _possibleConstructorReturn3.default)(this, (PendingConnectState.__proto__ || Object.getPrototypeOf(PendingConnectState)).call(this, signaling, timeoutMs)); + + _this2._initialStartTime = initialStartTimeIn || new Date().getTime(); + _this2._retries = retriesIn || 0; + return _this2; + } + + (0, _createClass3.default)(PendingConnectState, [{ + key: 'onOpen', + value: function onOpen() { + this.transit(new PendingInviteState(this._signaling)); + } + }, { + key: 'channelDown', + value: function channelDown() { + var now = new Date().getTime(); + var untilTimeoutMs = this._initialStartTime + this._timeoutMs - now; + if (untilTimeoutMs > 0 && ++this._retries < CONNECT_MAX_RETRIES) { + this._signaling._connect(); + this.transit(new PendingConnectState(this._signaling, untilTimeoutMs, this._initialStartTime, this._retries)); + } else { + this.transit(new FailedState(this._signaling, new Error('channelDown'))); + } + } + }, { + key: 'name', + get: function get() { + return "PendingConnectState"; + } + }]); + return PendingConnectState; +}(FailOnTimeoutState); + +var PendingInviteState = exports.PendingInviteState = function (_SignalingState2) { + (0, _inherits3.default)(PendingInviteState, _SignalingState2); + + function PendingInviteState() { + (0, _classCallCheck3.default)(this, PendingInviteState); + return (0, _possibleConstructorReturn3.default)(this, (PendingInviteState.__proto__ || Object.getPrototypeOf(PendingInviteState)).apply(this, arguments)); + } + + (0, _createClass3.default)(PendingInviteState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyConnected(resolve) { + self._signaling._connectedHandler(); + resolve(); + }); + } + }, { + key: 'invite', + value: function invite(sdp, iceCandidates) { + var self = this; + var inviteId = reqIdSeq++; + + var inviteParams = { + sdp: sdp, + candidates: iceCandidates + }; + self.logger.log('Sending SDP', sdp); + self._signaling._wss.send(JSON.stringify({ + jsonrpc: '2.0', + method: 'invite', + params: inviteParams, + id: inviteId + })); + self.transit(new PendingAnswerState(self._signaling, inviteId)); + } + }, { + key: 'channelDown', + value: function channelDown() { + this.transit(new FailedState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "PendingInviteState"; + } + }]); + return PendingInviteState; +}(SignalingState); + +var PendingAnswerState = exports.PendingAnswerState = function (_FailOnTimeoutState2) { + (0, _inherits3.default)(PendingAnswerState, _FailOnTimeoutState2); + + function PendingAnswerState(signaling, inviteId) { + (0, _classCallCheck3.default)(this, PendingAnswerState); + + var _this4 = (0, _possibleConstructorReturn3.default)(this, (PendingAnswerState.__proto__ || Object.getPrototypeOf(PendingAnswerState)).call(this, signaling, _rtc_const.MAX_INVITE_DELAY_MS)); + + _this4._inviteId = inviteId; + return _this4; + } + + (0, _createClass3.default)(PendingAnswerState, [{ + key: 'onRpcMsg', + value: function onRpcMsg(msg) { + var self = this; + if (msg.id === this._inviteId) { + if (msg.error || !msg.result) { + this.transit(new FailedState(this._signaling, self.translateInviteError(msg))); + } else { + new Promise(function notifyAnswered(resolve) { + self.logger.log('Received SDP', msg.result.sdp); + self._signaling._answeredHandler(msg.result.sdp, msg.result.candidates); + resolve(); + }); + this.transit(new PendingAcceptState(this._signaling, this._signaling._autoAnswer)); + } + } + } + }, { + key: 'translateInviteError', + value: function translateInviteError(msg) { + if (msg.error && msg.error.code == 486) { + return new _exceptions.BusyException(msg.error.message); + } else if (msg.error && msg.error.code == 404) { + return new _exceptions.CallNotFoundException(msg.error.message); + } else { + return new _exceptions.UnknownSignalingError(); + } + } + }, { + key: 'name', + get: function get() { + return "PendingAnswerState"; + } + }]); + return PendingAnswerState; +}(FailOnTimeoutState); + +var PendingAcceptState = exports.PendingAcceptState = function (_SignalingState3) { + (0, _inherits3.default)(PendingAcceptState, _SignalingState3); + + function PendingAcceptState(signaling, autoAnswer) { + (0, _classCallCheck3.default)(this, PendingAcceptState); + + var _this5 = (0, _possibleConstructorReturn3.default)(this, (PendingAcceptState.__proto__ || Object.getPrototypeOf(PendingAcceptState)).call(this, signaling)); + + _this5._autoAnswer = autoAnswer; + return _this5; + } + + (0, _createClass3.default)(PendingAcceptState, [{ + key: 'onEnter', + value: function onEnter() { + if (this._autoAnswer) { + this.accept(); + } + } + }, { + key: 'accept', + value: function accept() { + var acceptId = reqIdSeq++; + this._signaling._wss.send(JSON.stringify({ + jsonrpc: '2.0', + method: 'accept', + params: {}, + id: acceptId + })); + this.transit(new PendingAcceptAckState(this._signaling, acceptId)); + } + }, { + key: 'channelDown', + value: function channelDown() { + this.transit(new FailedState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "PendingAcceptState"; + } + }]); + return PendingAcceptState; +}(SignalingState); + +var PendingAcceptAckState = exports.PendingAcceptAckState = function (_FailOnTimeoutState3) { + (0, _inherits3.default)(PendingAcceptAckState, _FailOnTimeoutState3); + + function PendingAcceptAckState(signaling, acceptId) { + (0, _classCallCheck3.default)(this, PendingAcceptAckState); + + var _this6 = (0, _possibleConstructorReturn3.default)(this, (PendingAcceptAckState.__proto__ || Object.getPrototypeOf(PendingAcceptAckState)).call(this, signaling, _rtc_const.MAX_ACCEPT_BYE_DELAY_MS)); + + _this6._acceptId = acceptId; + return _this6; + } + + (0, _createClass3.default)(PendingAcceptAckState, [{ + key: 'onRpcMsg', + value: function onRpcMsg(msg) { + if (msg.id === this._acceptId) { + if (msg.error) { + this.transit(new FailedState(this._signaling)); + } else { + this._signaling._clientToken = msg.result.clientToken; + this.transit(new TalkingState(this._signaling)); + } + } + } + }, { + key: 'name', + get: function get() { + return "PendingAcceptAckState"; + } + }]); + return PendingAcceptAckState; +}(FailOnTimeoutState); + +var TalkingState = exports.TalkingState = function (_SignalingState4) { + (0, _inherits3.default)(TalkingState, _SignalingState4); + + function TalkingState() { + (0, _classCallCheck3.default)(this, TalkingState); + return (0, _possibleConstructorReturn3.default)(this, (TalkingState.__proto__ || Object.getPrototypeOf(TalkingState)).apply(this, arguments)); + } + + (0, _createClass3.default)(TalkingState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyHandshaked(resolve) { + self._signaling._handshakedHandler(); + resolve(); + }); + } + }, { + key: 'hangup', + value: function hangup() { + var byeId = reqIdSeq++; + this._signaling._wss.send(JSON.stringify({ + jsonrpc: '2.0', + method: 'bye', + params: {}, + id: byeId + })); + this.transit(new PendingRemoteHangupState(this._signaling, byeId)); + } + }, { + key: 'onRpcMsg', + value: function onRpcMsg(msg) { + if (msg.method === 'bye') { + this.transit(new PendingLocalHangupState(this._signaling, msg.id)); + } else if (msg.method === 'renewClientToken') { + this._signaling._clientToken = msg.params.clientToken; + } + } + }, { + key: 'channelDown', + value: function channelDown() { + this._signaling._reconnect(); + this._signaling.transit(new PendingReconnectState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "TalkingState"; + } + }]); + return TalkingState; +}(SignalingState); + +var PendingReconnectState = exports.PendingReconnectState = function (_FailOnTimeoutState4) { + (0, _inherits3.default)(PendingReconnectState, _FailOnTimeoutState4); + + function PendingReconnectState(signaling) { + (0, _classCallCheck3.default)(this, PendingReconnectState); + return (0, _possibleConstructorReturn3.default)(this, (PendingReconnectState.__proto__ || Object.getPrototypeOf(PendingReconnectState)).call(this, signaling, _rtc_const.DEFAULT_CONNECT_TIMEOUT_MS)); + } + + (0, _createClass3.default)(PendingReconnectState, [{ + key: 'onOpen', + value: function onOpen() { + this.transit(new TalkingState(this._signaling)); + } + }, { + key: 'channelDown', + value: function channelDown() { + this.transit(new FailedState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "PendingReconnectState"; + } + }]); + return PendingReconnectState; +}(FailOnTimeoutState); + +var PendingRemoteHangupState = exports.PendingRemoteHangupState = function (_FailOnTimeoutState5) { + (0, _inherits3.default)(PendingRemoteHangupState, _FailOnTimeoutState5); + + function PendingRemoteHangupState(signaling, byeId) { + (0, _classCallCheck3.default)(this, PendingRemoteHangupState); + + var _this9 = (0, _possibleConstructorReturn3.default)(this, (PendingRemoteHangupState.__proto__ || Object.getPrototypeOf(PendingRemoteHangupState)).call(this, signaling, _rtc_const.MAX_ACCEPT_BYE_DELAY_MS)); + + _this9._byeId = byeId; + return _this9; + } + + (0, _createClass3.default)(PendingRemoteHangupState, [{ + key: 'onRpcMsg', + value: function onRpcMsg(msg) { + if (msg.id === this._byeId) { + this.transit(new DisconnectedState(this._signaling)); + } + } + }, { + key: 'name', + get: function get() { + return "PendingRemoteHangupState"; + } + }]); + return PendingRemoteHangupState; +}(FailOnTimeoutState); + +var PendingLocalHangupState = exports.PendingLocalHangupState = function (_SignalingState5) { + (0, _inherits3.default)(PendingLocalHangupState, _SignalingState5); + + function PendingLocalHangupState(signaling, byeId) { + (0, _classCallCheck3.default)(this, PendingLocalHangupState); + + var _this10 = (0, _possibleConstructorReturn3.default)(this, (PendingLocalHangupState.__proto__ || Object.getPrototypeOf(PendingLocalHangupState)).call(this, signaling)); + + _this10._byeId = byeId; + return _this10; + } + + (0, _createClass3.default)(PendingLocalHangupState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyRemoteHungup(resolve) { + self._signaling._remoteHungupHandler(); + resolve(); + }); + } + }, { + key: 'hangup', + value: function hangup() { + var self = this; + self._signaling._wss.send(JSON.stringify({ + jsonrpc: '2.0', + result: {}, + id: self._byeId + })); + self.transit(new DisconnectedState(self._signaling)); + } + }, { + key: 'channelDown', + value: function channelDown() { + this.transit(new DisconnectedState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "PendingLocalHangupState"; + } + }]); + return PendingLocalHangupState; +}(SignalingState); + +var DisconnectedState = exports.DisconnectedState = function (_SignalingState6) { + (0, _inherits3.default)(DisconnectedState, _SignalingState6); + + function DisconnectedState() { + (0, _classCallCheck3.default)(this, DisconnectedState); + return (0, _possibleConstructorReturn3.default)(this, (DisconnectedState.__proto__ || Object.getPrototypeOf(DisconnectedState)).apply(this, arguments)); + } + + (0, _createClass3.default)(DisconnectedState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyDisconnected(resolve) { + self._signaling._disconnectedHandler(); + resolve(); + }); + this._signaling._wss.close(); + } + }, { + key: 'channelDown', + value: function channelDown() { + //Do nothing + } + }, { + key: 'name', + get: function get() { + return "DisconnectedState"; + } + }]); + return DisconnectedState; +}(SignalingState); + +var FailedState = exports.FailedState = function (_SignalingState7) { + (0, _inherits3.default)(FailedState, _SignalingState7); + + function FailedState(signaling, exception) { + (0, _classCallCheck3.default)(this, FailedState); + + var _this12 = (0, _possibleConstructorReturn3.default)(this, (FailedState.__proto__ || Object.getPrototypeOf(FailedState)).call(this, signaling)); + + _this12._exception = exception; + return _this12; + } + + (0, _createClass3.default)(FailedState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyFailed(resolve) { + self._signaling._failedHandler(self._exception); + resolve(); + }); + this._signaling._wss.close(); + } + }, { + key: 'channelDown', + value: function channelDown() { + //Do nothing + } + }, { + key: 'name', + get: function get() { + return "FailedState"; + } + }, { + key: 'exception', + get: function get() { + return this._exception; + } + }]); + return FailedState; +}(SignalingState); + +var AmznRtcSignaling = function () { + function AmznRtcSignaling(callId, signalingUri, contactToken, logger, connectTimeoutMs) { + (0, _classCallCheck3.default)(this, AmznRtcSignaling); + + this._callId = callId; + this._connectTimeoutMs = connectTimeoutMs || _rtc_const.DEFAULT_CONNECT_TIMEOUT_MS; + this._autoAnswer = true; + this._signalingUri = signalingUri; + this._contactToken = contactToken; + this._logger = (0, _utils.wrapLogger)(logger, callId, 'SIGNALING'); + + //empty event handlers + this._connectedHandler = this._answeredHandler = this._handshakedHandler = this._reconnectedHandler = this._remoteHungupHandler = this._disconnectedHandler = this._failedHandler = function noOp() {}; + } + + (0, _createClass3.default)(AmznRtcSignaling, [{ + key: 'connect', + value: function connect() { + this._connect(); + this.transit(new PendingConnectState(this, this._connectTimeoutMs)); + } + }, { + key: '_connect', + value: function _connect() { + this._wss = this._connectWebSocket(this._buildInviteUri()); + } + }, { + key: 'transit', + value: function transit(nextState) { + try { + this._logger.info((this._state ? this._state.name : 'null') + ' => ' + nextState.name); + if (this.state && this.state.onExit) { + this.state.onExit(); + } + } finally { + this._state = nextState; + if (this._state.onEnter) { + this._state.onEnter(); + } + } + } + }, { + key: '_connectWebSocket', + value: function _connectWebSocket(uri) { + var wsConnection = new WebSocket(uri); + wsConnection.onopen = (0, _utils.hitch)(this, this._onOpen); + wsConnection.onmessage = (0, _utils.hitch)(this, this._onMessage); + wsConnection.onerror = (0, _utils.hitch)(this, this._onError); + wsConnection.onclose = (0, _utils.hitch)(this, this._onClose); + return wsConnection; + } + }, { + key: '_buildInviteUri', + value: function _buildInviteUri() { + if (this._contactToken) { + return this._buildUriBase() + '&contactCtx=' + encodeURIComponent(this._contactToken); + } else { + return this._buildUriBase(); + } + } + }, { + key: '_buildReconnectUri', + value: function _buildReconnectUri() { + return this._buildUriBase() + '&clientToken=' + encodeURIComponent(this._clientToken); + } + }, { + key: '_buildUriBase', + value: function _buildUriBase() { + var separator = '?'; + if (this._signalingUri.indexOf(separator) > -1) { + separator = '&'; + } + return this._signalingUri + separator + 'callId=' + encodeURIComponent(this._callId); + } + }, { + key: '_onMessage', + value: function _onMessage(evt) { + this.state.onRpcMsg(JSON.parse(evt.data)); + } + }, { + key: '_onOpen', + value: function _onOpen(evt) { + this.state.onOpen(evt); + } + }, { + key: '_onError', + value: function _onError(evt) { + this.state.onError(evt); + } + }, { + key: '_onClose', + value: function _onClose(evt) { + this._logger.log('WebSocket onclose code=' + evt.code + ', reason=' + evt.reason); + this.state.onClose(evt); + } + }, { + key: '_reconnect', + value: function _reconnect() { + this._wss = this._connectWebSocket(this._buildReconnectUri()); + } + }, { + key: 'invite', + value: function invite(sdp, iceCandidates) { + this.state.invite(sdp, iceCandidates); + } + }, { + key: 'accept', + value: function accept() { + this.state.accept(); + } + }, { + key: 'hangup', + value: function hangup() { + this.state.hangup(); + } + }, { + key: 'callId', + get: function get() { + return this._callId; + } + }, { + key: 'onConnected', + set: function set(connectedHandler) { + this._connectedHandler = connectedHandler; + } + }, { + key: 'onAnswered', + set: function set(answeredHandler) { + this._answeredHandler = answeredHandler; + } + }, { + key: 'onHandshaked', + set: function set(handshakedHandler) { + this._handshakedHandler = handshakedHandler; + } + }, { + key: 'onReconnected', + set: function set(reconnectedHandler) { + this._reconnectedHandler = reconnectedHandler; + } + }, { + key: 'onRemoteHungup', + set: function set(remoteHungupHandler) { + this._remoteHungupHandler = remoteHungupHandler; + } + }, { + key: 'onDisconnected', + set: function set(disconnectedHandler) { + this._disconnectedHandler = disconnectedHandler; + } + }, { + key: 'onFailed', + set: function set(failedHandler) { + this._failedHandler = failedHandler; + } + }, { + key: 'state', + get: function get() { + return this._state; + } + }]); + return AmznRtcSignaling; +}(); + +exports.default = AmznRtcSignaling; + +},{"./exceptions":130,"./rtc_const":131,"./utils":136,"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11,"babel-runtime/helpers/inherits":13,"babel-runtime/helpers/possibleConstructorReturn":14}],136:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.SdpOptions = undefined; + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require('babel-runtime/helpers/createClass'); + +var _createClass3 = _interopRequireDefault(_createClass2); + +exports.hitch = hitch; +exports.wrapLogger = wrapLogger; +exports.closeStream = closeStream; +exports.transformSdp = transformSdp; +exports.is_defined = is_defined; +exports.when_defined = when_defined; + +var _exceptions = require('./exceptions'); + +var _sdp = require('sdp'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * All logging methods used by connect-rtc. + */ +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ + +var logMethods = ['log', 'info', 'warn', 'error']; + +/** +* Binds the given instance object as the context for +* the method provided. +* +* @param scope The instance object to be set as the scope +* of the function. +* @param method The method to be encapsulated. +* +* All other arguments, if any, are bound to the method +* invocation inside the closure. +* +* @return A closure encapsulating the invocation of the +* method provided in context of the given instance. +*/ +function hitch() { + var args = Array.prototype.slice.call(arguments); + var scope = args.shift(); + var method = args.shift(); + + if (!scope) { + throw new _exceptions.IllegalParameters('utils.hitch(): scope is required!'); + } + + if (!method) { + throw new _exceptions.IllegalParameters('utils.hitch(): method is required!'); + } + + if (typeof method !== 'function') { + throw new _exceptions.IllegalParameters('utils.hitch(): method is not a function!'); + } + + return function _hitchedFunction() { + var closureArgs = Array.prototype.slice.call(arguments); + return method.apply(scope, args.concat(closureArgs)); + }; +} + +function wrapLogger(logger, callId, logCategory) { + var _logger = {}; + logMethods.forEach(function (logMethod) { + if (!logger[logMethod]) { + throw new Error('Logging method ' + logMethod + ' required'); + } + _logger[logMethod] = hitch(logger, logger[logMethod], callId, logCategory); + }); + return _logger; +} + +function closeStream(stream) { + if (stream) { + var tracks = stream.getTracks(); + for (var i = 0; i < tracks.length; i++) { + var track = tracks[i]; + try { + track.stop(); + } catch (e) { + // eat exception + } + } + } +} + +/** + * A parameter of transformSdp. + * This defines all the SDP options connect-rtc-js supports. + */ + +var SdpOptions = exports.SdpOptions = function () { + function SdpOptions() { + (0, _classCallCheck3.default)(this, SdpOptions); + + this._forceCodec = {}; + } + + (0, _createClass3.default)(SdpOptions, [{ + key: '_shouldDeleteCodec', + + + /** + * Test if given codec should be removed from SDP. + * @param mediaType audio|video + * @param codecName case insensitive + * @return TRUE - should remove + */ + value: function _shouldDeleteCodec(mediaType, codecName) { + var upperCaseCodecName = codecName.toUpperCase(); + return this._forceCodec[mediaType] && upperCaseCodecName !== this._forceCodec[mediaType].toUpperCase() && upperCaseCodecName !== 'TELEPHONE-EVENT'; + } + }, { + key: 'enableOpusDtx', + get: function get() { + return this._enableOpusDtx; + } + + /** + * By default transformSdp disables dtx for OPUS codec. + * Setting this to true would force it to turn on DTX. + */ + , + set: function set(flag) { + this._enableOpusDtx = flag; + } + + /** + * A map from media type (audio/video) to codec (case insensitive). + * Add entry for force connect-rtc-js to use specified codec for certain media type. + * For example: sdpOptions.forceCodec['audio'] = 'opus'; + */ + + }, { + key: 'forceCodec', + get: function get() { + return this._forceCodec; + } + }]); + return SdpOptions; +}(); + +/** + * Modifies input SDP according to sdpOptions. + * See SdpOptions for available options. + * @param sdp original SDP + * @param sdpOptions defines changes to be applied to SDP + * @returns a map with 'sdp' containing the transformed SDP and 'mLines' containing the number of m lines in SDP + */ + + +function transformSdp(sdp, sdpOptions) { + var sections = (0, _sdp.splitSections)(sdp); + for (var i = 1; i < sections.length; i++) { + var mediaType = (0, _sdp.getKind)(sections[i]); + var rtpParams = (0, _sdp.parseRtpParameters)(sections[i]); + // a map from payload type (string) to codec object + var codecMap = rtpParams.codecs.reduce(function (map, codec) { + map['' + codec.payloadType] = codec; + return map; + }, {}); + sections[i] = (0, _sdp.splitLines)(sections[i]).map(function (line) { + if (line.startsWith('m=')) { + // modify m= line if SdpOptions#forceCodec specifies codec for current media type + if (sdpOptions.forceCodec[mediaType]) { + var targetCodecPts = Object.keys(codecMap).filter(function (pt) { + return !sdpOptions._shouldDeleteCodec(mediaType, codecMap[pt].name); + }); + return (/.*RTP\/S?AVPF? /.exec(line) + targetCodecPts.join(' ') + ); + } else { + return line; + } + } else if (line.startsWith('a=rtpmap:')) { + var rtpMap = (0, _sdp.parseRtpMap)(line); + var currentCodec = codecMap[rtpMap.payloadType]; + + // remove this codec if SdpOptions#forceCodec specifies a different codec for current media type + if (sdpOptions._shouldDeleteCodec(mediaType, currentCodec.name)) { + return null; + } + + // append a=fmtp line immediately if current codec is OPUS (to explicitly specify OPUS parameters) + if (currentCodec.name.toUpperCase() === 'OPUS') { + currentCodec.parameters.usedtx = sdpOptions.enableOpusDtx ? 1 : 0; + // generate fmtp line immediately after rtpmap line, and remove original fmtp line once we see it + return (line + "\r\n" + (0, _sdp.writeFmtp)(currentCodec)).trim(); + } else { + return line; + } + } else if (line.startsWith('a=fmtp:')) { + var pt = line.substring('a=fmtp:'.length, line.indexOf(' ')); + var currentCodec = codecMap[pt]; // eslint-disable-line no-redeclare + + // remove this codec if SdpOptions#forceCodec specifies a different codec for current media type + if (sdpOptions._shouldDeleteCodec(mediaType, currentCodec.name)) { + return null; + } + + if (currentCodec.name.toUpperCase() === 'OPUS') { + // this is a line for OPUS, remove it because FMTP line is already generated when rtpmap line is processed + return null; + } else { + return line; + } + } else if (line.startsWith('a=rtcp-fb:')) { + var pt = line.substring(line.indexOf(':') + 1, line.indexOf(' ')); // eslint-disable-line no-redeclare + var currentCodec = codecMap[pt]; // eslint-disable-line no-redeclare + + // remove this codec if SdpOptions#forceCodec specifies a different codec for current media type + if (sdpOptions._shouldDeleteCodec(mediaType, currentCodec.name)) { + return null; + } else { + return line; + } + } else { + return line; + } + }).filter(function (line) { + return line !== null; + }).join('\r\n'); + } + return { + sdp: sections.map(function (section) { + return section.trim(); + }).join('\r\n') + '\r\n', + mLines: sections.length - 1 // first section is session description, the rest are media descriptions + }; +} + +function is_defined(v) { + return typeof v !== 'undefined'; +} + +function when_defined(v, alternativeIn) { + var alternative = is_defined(alternativeIn) ? alternativeIn : null; + return is_defined(v) ? v : alternative; +} + +},{"./exceptions":130,"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11,"sdp":116}]},{},[129]) +//# 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default: obj }; }\n\nexports.default = function (subClass, superClass) {\n  if (typeof superClass !== \"function\" && superClass !== null) {\n    throw new TypeError(\"Super expression must either be null or a function, not \" + (typeof superClass === \"undefined\" ? \"undefined\" : (0, _typeof3.default)(superClass)));\n  }\n\n  subClass.prototype = (0, _create2.default)(superClass && superClass.prototype, {\n    constructor: {\n      value: subClass,\n      enumerable: false,\n      writable: true,\n      configurable: true\n    }\n  });\n  if (superClass) _setPrototypeOf2.default ? 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function (obj) { return typeof obj; } : function (obj) { return obj && typeof _symbol2.default === \"function\" && obj.constructor === _symbol2.default && obj !== _symbol2.default.prototype ? \"symbol\" : typeof obj; };\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nexports.default = typeof _symbol2.default === \"function\" && _typeof(_iterator2.default) === \"symbol\" ? function (obj) {\n  return typeof obj === \"undefined\" ? \"undefined\" : _typeof(obj);\n} : function (obj) {\n  return obj && typeof _symbol2.default === \"function\" && obj.constructor === _symbol2.default && obj !== _symbol2.default.prototype ? \"symbol\" : typeof obj === \"undefined\" ? \"undefined\" : _typeof(obj);\n};","module.exports = require(\"regenerator-runtime\");\n","require('../../modules/es6.object.create');\nvar $Object = require('../../modules/_core').Object;\nmodule.exports = function create(P, D) {\n  return $Object.create(P, D);\n};\n","require('../../modules/es6.object.define-property');\nvar $Object = require('../../modules/_core').Object;\nmodule.exports = function defineProperty(it, key, desc) {\n  return $Object.defineProperty(it, key, desc);\n};\n","require('../../modules/es6.object.get-own-property-descriptor');\nvar $Object = require('../../modules/_core').Object;\nmodule.exports = function getOwnPropertyDescriptor(it, key) {\n  return $Object.getOwnPropertyDescriptor(it, key);\n};\n","require('../../modules/es6.object.get-prototype-of');\nmodule.exports = require('../../modules/_core').Object.getPrototypeOf;\n","require('../../modules/es6.object.set-prototype-of');\nmodule.exports = require('../../modules/_core').Object.setPrototypeOf;\n","require('../modules/es6.object.to-string');\nrequire('../modules/es6.string.iterator');\nrequire('../modules/web.dom.iterable');\nrequire('../modules/es6.promise');\nrequire('../modules/es7.promise.finally');\nrequire('../modules/es7.promise.try');\nmodule.exports = require('../modules/_core').Promise;\n","require('../../modules/es6.symbol');\nrequire('../../modules/es6.object.to-string');\nrequire('../../modules/es7.symbol.async-iterator');\nrequire('../../modules/es7.symbol.observable');\nmodule.exports = require('../../modules/_core').Symbol;\n","require('../../modules/es6.string.iterator');\nrequire('../../modules/web.dom.iterable');\nmodule.exports = require('../../modules/_wks-ext').f('iterator');\n","module.exports = function (it) {\n  if (typeof it != 'function') throw TypeError(it + ' is not a function!');\n  return it;\n};\n","module.exports = function () { /* empty */ };\n","module.exports = function (it, Constructor, name, forbiddenField) {\n  if (!(it instanceof Constructor) || (forbiddenField !== undefined && forbiddenField in it)) {\n    throw TypeError(name + ': incorrect invocation!');\n  } return it;\n};\n","var isObject = require('./_is-object');\nmodule.exports = function (it) {\n  if (!isObject(it)) throw TypeError(it + ' is not an object!');\n  return it;\n};\n","// false -> Array#indexOf\n// true  -> Array#includes\nvar toIObject = require('./_to-iobject');\nvar toLength = require('./_to-length');\nvar toAbsoluteIndex = require('./_to-absolute-index');\nmodule.exports = function (IS_INCLUDES) {\n  return function ($this, el, fromIndex) {\n    var O = toIObject($this);\n    var length = toLength(O.length);\n    var index = toAbsoluteIndex(fromIndex, length);\n    var value;\n    // Array#includes uses SameValueZero equality algorithm\n    // eslint-disable-next-line no-self-compare\n    if (IS_INCLUDES && el != el) while (length > index) {\n      value = O[index++];\n      // eslint-disable-next-line no-self-compare\n      if (value != value) return true;\n    // Array#indexOf ignores holes, Array#includes - not\n    } else for (;length > index; index++) if (IS_INCLUDES || index in O) {\n      if (O[index] === el) return IS_INCLUDES || index || 0;\n    } return !IS_INCLUDES && -1;\n  };\n};\n","// getting tag from 19.1.3.6 Object.prototype.toString()\nvar cof = require('./_cof');\nvar TAG = require('./_wks')('toStringTag');\n// ES3 wrong here\nvar ARG = cof(function () { return arguments; }()) == 'Arguments';\n\n// fallback for IE11 Script Access Denied error\nvar tryGet = function (it, key) {\n  try {\n    return it[key];\n  } catch (e) { /* empty */ }\n};\n\nmodule.exports = function (it) {\n  var O, T, B;\n  return it === undefined ? 'Undefined' : it === null ? 'Null'\n    // @@toStringTag case\n    : typeof (T = tryGet(O = Object(it), TAG)) == 'string' ? T\n    // builtinTag case\n    : ARG ? cof(O)\n    // ES3 arguments fallback\n    : (B = cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B;\n};\n","var toString = {}.toString;\n\nmodule.exports = function (it) {\n  return toString.call(it).slice(8, -1);\n};\n","var core = module.exports = { version: '2.6.2' };\nif (typeof __e == 'number') __e = core; // eslint-disable-line no-undef\n","// optional / simple context binding\nvar aFunction = require('./_a-function');\nmodule.exports = function (fn, that, length) {\n  aFunction(fn);\n  if (that === undefined) return fn;\n  switch (length) {\n    case 1: return function (a) {\n      return fn.call(that, a);\n    };\n    case 2: return function (a, b) {\n      return fn.call(that, a, b);\n    };\n    case 3: return function (a, b, c) {\n      return fn.call(that, a, b, c);\n    };\n  }\n  return function (/* ...args */) {\n    return fn.apply(that, arguments);\n  };\n};\n","// 7.2.1 RequireObjectCoercible(argument)\nmodule.exports = function (it) {\n  if (it == undefined) throw TypeError(\"Can't call method on  \" + it);\n  return it;\n};\n","// Thank's IE8 for his funny defineProperty\nmodule.exports = !require('./_fails')(function () {\n  return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;\n});\n","var isObject = require('./_is-object');\nvar document = require('./_global').document;\n// typeof document.createElement is 'object' in old IE\nvar is = isObject(document) && isObject(document.createElement);\nmodule.exports = function (it) {\n  return is ? document.createElement(it) : {};\n};\n","// IE 8- don't enum bug keys\nmodule.exports = (\n  'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'\n).split(',');\n","// all enumerable object keys, includes symbols\nvar getKeys = require('./_object-keys');\nvar gOPS = require('./_object-gops');\nvar pIE = require('./_object-pie');\nmodule.exports = function (it) {\n  var result = getKeys(it);\n  var getSymbols = gOPS.f;\n  if (getSymbols) {\n    var symbols = getSymbols(it);\n    var isEnum = pIE.f;\n    var i = 0;\n    var key;\n    while (symbols.length > i) if (isEnum.call(it, key = symbols[i++])) result.push(key);\n  } return result;\n};\n","var global = require('./_global');\nvar core = require('./_core');\nvar ctx = require('./_ctx');\nvar hide = require('./_hide');\nvar has = require('./_has');\nvar PROTOTYPE = 'prototype';\n\nvar $export = function (type, name, source) {\n  var IS_FORCED = type & $export.F;\n  var IS_GLOBAL = type & $export.G;\n  var IS_STATIC = type & $export.S;\n  var IS_PROTO = type & $export.P;\n  var IS_BIND = type & $export.B;\n  var IS_WRAP = type & $export.W;\n  var exports = IS_GLOBAL ? core : core[name] || (core[name] = {});\n  var expProto = exports[PROTOTYPE];\n  var target = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE];\n  var key, own, out;\n  if (IS_GLOBAL) source = name;\n  for (key in source) {\n    // contains in native\n    own = !IS_FORCED && target && target[key] !== undefined;\n    if (own && has(exports, key)) continue;\n    // export native or passed\n    out = own ? target[key] : source[key];\n    // prevent global pollution for namespaces\n    exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key]\n    // bind timers to global for call from export context\n    : IS_BIND && own ? ctx(out, global)\n    // wrap global constructors for prevent change them in library\n    : IS_WRAP && target[key] == out ? (function (C) {\n      var F = function (a, b, c) {\n        if (this instanceof C) {\n          switch (arguments.length) {\n            case 0: return new C();\n            case 1: return new C(a);\n            case 2: return new C(a, b);\n          } return new C(a, b, c);\n        } return C.apply(this, arguments);\n      };\n      F[PROTOTYPE] = C[PROTOTYPE];\n      return F;\n    // make static versions for prototype methods\n    })(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;\n    // export proto methods to core.%CONSTRUCTOR%.methods.%NAME%\n    if (IS_PROTO) {\n      (exports.virtual || (exports.virtual = {}))[key] = out;\n      // export proto methods to core.%CONSTRUCTOR%.prototype.%NAME%\n      if (type & $export.R && expProto && !expProto[key]) hide(expProto, key, out);\n    }\n  }\n};\n// type bitmap\n$export.F = 1;   // forced\n$export.G = 2;   // global\n$export.S = 4;   // static\n$export.P = 8;   // proto\n$export.B = 16;  // bind\n$export.W = 32;  // wrap\n$export.U = 64;  // safe\n$export.R = 128; // real proto method for `library`\nmodule.exports = $export;\n","module.exports = function (exec) {\n  try {\n    return !!exec();\n  } catch (e) {\n    return true;\n  }\n};\n","var ctx = require('./_ctx');\nvar call = require('./_iter-call');\nvar isArrayIter = require('./_is-array-iter');\nvar anObject = require('./_an-object');\nvar toLength = require('./_to-length');\nvar getIterFn = require('./core.get-iterator-method');\nvar BREAK = {};\nvar RETURN = {};\nvar exports = module.exports = function (iterable, entries, fn, that, ITERATOR) {\n  var iterFn = ITERATOR ? function () { return iterable; } : getIterFn(iterable);\n  var f = ctx(fn, that, entries ? 2 : 1);\n  var index = 0;\n  var length, step, iterator, result;\n  if (typeof iterFn != 'function') throw TypeError(iterable + ' is not iterable!');\n  // fast case for arrays with default iterator\n  if (isArrayIter(iterFn)) for (length = toLength(iterable.length); length > index; index++) {\n    result = entries ? f(anObject(step = iterable[index])[0], step[1]) : f(iterable[index]);\n    if (result === BREAK || result === RETURN) return result;\n  } else for (iterator = iterFn.call(iterable); !(step = iterator.next()).done;) {\n    result = call(iterator, f, step.value, entries);\n    if (result === BREAK || result === RETURN) return result;\n  }\n};\nexports.BREAK = BREAK;\nexports.RETURN = RETURN;\n","// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028\nvar global = module.exports = typeof window != 'undefined' && window.Math == Math\n  ? window : typeof self != 'undefined' && self.Math == Math ? self\n  // eslint-disable-next-line no-new-func\n  : Function('return this')();\nif (typeof __g == 'number') __g = global; // eslint-disable-line no-undef\n","var hasOwnProperty = {}.hasOwnProperty;\nmodule.exports = function (it, key) {\n  return hasOwnProperty.call(it, key);\n};\n","var dP = require('./_object-dp');\nvar createDesc = require('./_property-desc');\nmodule.exports = require('./_descriptors') ? function (object, key, value) {\n  return dP.f(object, key, createDesc(1, value));\n} : function (object, key, value) {\n  object[key] = value;\n  return object;\n};\n","var document = require('./_global').document;\nmodule.exports = document && document.documentElement;\n","module.exports = !require('./_descriptors') && !require('./_fails')(function () {\n  return Object.defineProperty(require('./_dom-create')('div'), 'a', { get: function () { return 7; } }).a != 7;\n});\n","// fast apply, http://jsperf.lnkit.com/fast-apply/5\nmodule.exports = function (fn, args, that) {\n  var un = that === undefined;\n  switch (args.length) {\n    case 0: return un ? fn()\n                      : fn.call(that);\n    case 1: return un ? fn(args[0])\n                      : fn.call(that, args[0]);\n    case 2: return un ? fn(args[0], args[1])\n                      : fn.call(that, args[0], args[1]);\n    case 3: return un ? fn(args[0], args[1], args[2])\n                      : fn.call(that, args[0], args[1], args[2]);\n    case 4: return un ? fn(args[0], args[1], args[2], args[3])\n                      : fn.call(that, args[0], args[1], args[2], args[3]);\n  } return fn.apply(that, args);\n};\n","// fallback for non-array-like ES3 and non-enumerable old V8 strings\nvar cof = require('./_cof');\n// eslint-disable-next-line no-prototype-builtins\nmodule.exports = Object('z').propertyIsEnumerable(0) ? Object : function (it) {\n  return cof(it) == 'String' ? it.split('') : Object(it);\n};\n","// check on default Array iterator\nvar Iterators = require('./_iterators');\nvar ITERATOR = require('./_wks')('iterator');\nvar ArrayProto = Array.prototype;\n\nmodule.exports = function (it) {\n  return it !== undefined && (Iterators.Array === it || ArrayProto[ITERATOR] === it);\n};\n","// 7.2.2 IsArray(argument)\nvar cof = require('./_cof');\nmodule.exports = Array.isArray || function isArray(arg) {\n  return cof(arg) == 'Array';\n};\n","module.exports = function (it) {\n  return typeof it === 'object' ? it !== null : typeof it === 'function';\n};\n","// call something on iterator step with safe closing on error\nvar anObject = require('./_an-object');\nmodule.exports = function (iterator, fn, value, entries) {\n  try {\n    return entries ? fn(anObject(value)[0], value[1]) : fn(value);\n  // 7.4.6 IteratorClose(iterator, completion)\n  } catch (e) {\n    var ret = iterator['return'];\n    if (ret !== undefined) anObject(ret.call(iterator));\n    throw e;\n  }\n};\n","'use strict';\nvar create = require('./_object-create');\nvar descriptor = require('./_property-desc');\nvar setToStringTag = require('./_set-to-string-tag');\nvar IteratorPrototype = {};\n\n// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()\nrequire('./_hide')(IteratorPrototype, require('./_wks')('iterator'), function () { return this; });\n\nmodule.exports = function (Constructor, NAME, next) {\n  Constructor.prototype = create(IteratorPrototype, { next: descriptor(1, next) });\n  setToStringTag(Constructor, NAME + ' Iterator');\n};\n","'use strict';\nvar LIBRARY = require('./_library');\nvar $export = require('./_export');\nvar redefine = require('./_redefine');\nvar hide = require('./_hide');\nvar Iterators = require('./_iterators');\nvar $iterCreate = require('./_iter-create');\nvar setToStringTag = require('./_set-to-string-tag');\nvar getPrototypeOf = require('./_object-gpo');\nvar ITERATOR = require('./_wks')('iterator');\nvar BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next`\nvar FF_ITERATOR = '@@iterator';\nvar KEYS = 'keys';\nvar VALUES = 'values';\n\nvar returnThis = function () { return this; };\n\nmodule.exports = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) {\n  $iterCreate(Constructor, NAME, next);\n  var getMethod = function (kind) {\n    if (!BUGGY && kind in proto) return proto[kind];\n    switch (kind) {\n      case KEYS: return function keys() { return new Constructor(this, kind); };\n      case VALUES: return function values() { return new Constructor(this, kind); };\n    } return function entries() { return new Constructor(this, kind); };\n  };\n  var TAG = NAME + ' Iterator';\n  var DEF_VALUES = DEFAULT == VALUES;\n  var VALUES_BUG = false;\n  var proto = Base.prototype;\n  var $native = proto[ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT];\n  var $default = $native || getMethod(DEFAULT);\n  var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined;\n  var $anyNative = NAME == 'Array' ? proto.entries || $native : $native;\n  var methods, key, IteratorPrototype;\n  // Fix native\n  if ($anyNative) {\n    IteratorPrototype = getPrototypeOf($anyNative.call(new Base()));\n    if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) {\n      // Set @@toStringTag to native iterators\n      setToStringTag(IteratorPrototype, TAG, true);\n      // fix for some old engines\n      if (!LIBRARY && typeof IteratorPrototype[ITERATOR] != 'function') hide(IteratorPrototype, ITERATOR, returnThis);\n    }\n  }\n  // fix Array#{values, @@iterator}.name in V8 / FF\n  if (DEF_VALUES && $native && $native.name !== VALUES) {\n    VALUES_BUG = true;\n    $default = function values() { return $native.call(this); };\n  }\n  // Define iterator\n  if ((!LIBRARY || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR])) {\n    hide(proto, ITERATOR, $default);\n  }\n  // Plug for library\n  Iterators[NAME] = $default;\n  Iterators[TAG] = returnThis;\n  if (DEFAULT) {\n    methods = {\n      values: DEF_VALUES ? $default : getMethod(VALUES),\n      keys: IS_SET ? $default : getMethod(KEYS),\n      entries: $entries\n    };\n    if (FORCED) for (key in methods) {\n      if (!(key in proto)) redefine(proto, key, methods[key]);\n    } else $export($export.P + $export.F * (BUGGY || VALUES_BUG), NAME, methods);\n  }\n  return methods;\n};\n","var ITERATOR = require('./_wks')('iterator');\nvar SAFE_CLOSING = false;\n\ntry {\n  var riter = [7][ITERATOR]();\n  riter['return'] = function () { SAFE_CLOSING = true; };\n  // eslint-disable-next-line no-throw-literal\n  Array.from(riter, function () { throw 2; });\n} catch (e) { /* empty */ }\n\nmodule.exports = function (exec, skipClosing) {\n  if (!skipClosing && !SAFE_CLOSING) return false;\n  var safe = false;\n  try {\n    var arr = [7];\n    var iter = arr[ITERATOR]();\n    iter.next = function () { return { done: safe = true }; };\n    arr[ITERATOR] = function () { return iter; };\n    exec(arr);\n  } catch (e) { /* empty */ }\n  return safe;\n};\n","module.exports = function (done, value) {\n  return { value: value, done: !!done };\n};\n","module.exports = {};\n","module.exports = true;\n","var META = require('./_uid')('meta');\nvar isObject = require('./_is-object');\nvar has = require('./_has');\nvar setDesc = require('./_object-dp').f;\nvar id = 0;\nvar isExtensible = Object.isExtensible || function () {\n  return true;\n};\nvar FREEZE = !require('./_fails')(function () {\n  return isExtensible(Object.preventExtensions({}));\n});\nvar setMeta = function (it) {\n  setDesc(it, META, { value: {\n    i: 'O' + ++id, // object ID\n    w: {}          // weak collections IDs\n  } });\n};\nvar fastKey = function (it, create) {\n  // return primitive with prefix\n  if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;\n  if (!has(it, META)) {\n    // can't set metadata to uncaught frozen object\n    if (!isExtensible(it)) return 'F';\n    // not necessary to add metadata\n    if (!create) return 'E';\n    // add missing metadata\n    setMeta(it);\n  // return object ID\n  } return it[META].i;\n};\nvar getWeak = function (it, create) {\n  if (!has(it, META)) {\n    // can't set metadata to uncaught frozen object\n    if (!isExtensible(it)) return true;\n    // not necessary to add metadata\n    if (!create) return false;\n    // add missing metadata\n    setMeta(it);\n  // return hash weak collections IDs\n  } return it[META].w;\n};\n// add metadata on freeze-family methods calling\nvar onFreeze = function (it) {\n  if (FREEZE && meta.NEED && isExtensible(it) && !has(it, META)) setMeta(it);\n  return it;\n};\nvar meta = module.exports = {\n  KEY: META,\n  NEED: false,\n  fastKey: fastKey,\n  getWeak: getWeak,\n  onFreeze: onFreeze\n};\n","var global = require('./_global');\nvar macrotask = require('./_task').set;\nvar Observer = global.MutationObserver || global.WebKitMutationObserver;\nvar process = global.process;\nvar Promise = global.Promise;\nvar isNode = require('./_cof')(process) == 'process';\n\nmodule.exports = function () {\n  var head, last, notify;\n\n  var flush = function () {\n    var parent, fn;\n    if (isNode && (parent = process.domain)) parent.exit();\n    while (head) {\n      fn = head.fn;\n      head = head.next;\n      try {\n        fn();\n      } catch (e) {\n        if (head) notify();\n        else last = undefined;\n        throw e;\n      }\n    } last = undefined;\n    if (parent) parent.enter();\n  };\n\n  // Node.js\n  if (isNode) {\n    notify = function () {\n      process.nextTick(flush);\n    };\n  // browsers with MutationObserver, except iOS Safari - https://github.com/zloirock/core-js/issues/339\n  } else if (Observer && !(global.navigator && global.navigator.standalone)) {\n    var toggle = true;\n    var node = document.createTextNode('');\n    new Observer(flush).observe(node, { characterData: true }); // eslint-disable-line no-new\n    notify = function () {\n      node.data = toggle = !toggle;\n    };\n  // environments with maybe non-completely correct, but existent Promise\n  } else if (Promise && Promise.resolve) {\n    // Promise.resolve without an argument throws an error in LG WebOS 2\n    var promise = Promise.resolve(undefined);\n    notify = function () {\n      promise.then(flush);\n    };\n  // for other environments - macrotask based on:\n  // - setImmediate\n  // - MessageChannel\n  // - window.postMessag\n  // - onreadystatechange\n  // - setTimeout\n  } else {\n    notify = function () {\n      // strange IE + webpack dev server bug - use .call(global)\n      macrotask.call(global, flush);\n    };\n  }\n\n  return function (fn) {\n    var task = { fn: fn, next: undefined };\n    if (last) last.next = task;\n    if (!head) {\n      head = task;\n      notify();\n    } last = task;\n  };\n};\n","'use strict';\n// 25.4.1.5 NewPromiseCapability(C)\nvar aFunction = require('./_a-function');\n\nfunction PromiseCapability(C) {\n  var resolve, reject;\n  this.promise = new C(function ($$resolve, $$reject) {\n    if (resolve !== undefined || reject !== undefined) throw TypeError('Bad Promise constructor');\n    resolve = $$resolve;\n    reject = $$reject;\n  });\n  this.resolve = aFunction(resolve);\n  this.reject = aFunction(reject);\n}\n\nmodule.exports.f = function (C) {\n  return new PromiseCapability(C);\n};\n","// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])\nvar anObject = require('./_an-object');\nvar dPs = require('./_object-dps');\nvar enumBugKeys = require('./_enum-bug-keys');\nvar IE_PROTO = require('./_shared-key')('IE_PROTO');\nvar Empty = function () { /* empty */ };\nvar PROTOTYPE = 'prototype';\n\n// Create object with fake `null` prototype: use iframe Object with cleared prototype\nvar createDict = function () {\n  // Thrash, waste and sodomy: IE GC bug\n  var iframe = require('./_dom-create')('iframe');\n  var i = enumBugKeys.length;\n  var lt = '<';\n  var gt = '>';\n  var iframeDocument;\n  iframe.style.display = 'none';\n  require('./_html').appendChild(iframe);\n  iframe.src = 'javascript:'; // eslint-disable-line no-script-url\n  // createDict = iframe.contentWindow.Object;\n  // html.removeChild(iframe);\n  iframeDocument = iframe.contentWindow.document;\n  iframeDocument.open();\n  iframeDocument.write(lt + 'script' + gt + 'document.F=Object' + lt + '/script' + gt);\n  iframeDocument.close();\n  createDict = iframeDocument.F;\n  while (i--) delete createDict[PROTOTYPE][enumBugKeys[i]];\n  return createDict();\n};\n\nmodule.exports = Object.create || function create(O, Properties) {\n  var result;\n  if (O !== null) {\n    Empty[PROTOTYPE] = anObject(O);\n    result = new Empty();\n    Empty[PROTOTYPE] = null;\n    // add \"__proto__\" for Object.getPrototypeOf polyfill\n    result[IE_PROTO] = O;\n  } else result = createDict();\n  return Properties === undefined ? result : dPs(result, Properties);\n};\n","var anObject = require('./_an-object');\nvar IE8_DOM_DEFINE = require('./_ie8-dom-define');\nvar toPrimitive = require('./_to-primitive');\nvar dP = Object.defineProperty;\n\nexports.f = require('./_descriptors') ? Object.defineProperty : function defineProperty(O, P, Attributes) {\n  anObject(O);\n  P = toPrimitive(P, true);\n  anObject(Attributes);\n  if (IE8_DOM_DEFINE) try {\n    return dP(O, P, Attributes);\n  } catch (e) { /* empty */ }\n  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');\n  if ('value' in Attributes) O[P] = Attributes.value;\n  return O;\n};\n","var dP = require('./_object-dp');\nvar anObject = require('./_an-object');\nvar getKeys = require('./_object-keys');\n\nmodule.exports = require('./_descriptors') ? Object.defineProperties : function defineProperties(O, Properties) {\n  anObject(O);\n  var keys = getKeys(Properties);\n  var length = keys.length;\n  var i = 0;\n  var P;\n  while (length > i) dP.f(O, P = keys[i++], Properties[P]);\n  return O;\n};\n","var pIE = require('./_object-pie');\nvar createDesc = require('./_property-desc');\nvar toIObject = require('./_to-iobject');\nvar toPrimitive = require('./_to-primitive');\nvar has = require('./_has');\nvar IE8_DOM_DEFINE = require('./_ie8-dom-define');\nvar gOPD = Object.getOwnPropertyDescriptor;\n\nexports.f = require('./_descriptors') ? gOPD : function getOwnPropertyDescriptor(O, P) {\n  O = toIObject(O);\n  P = toPrimitive(P, true);\n  if (IE8_DOM_DEFINE) try {\n    return gOPD(O, P);\n  } catch (e) { /* empty */ }\n  if (has(O, P)) return createDesc(!pIE.f.call(O, P), O[P]);\n};\n","// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window\nvar toIObject = require('./_to-iobject');\nvar gOPN = require('./_object-gopn').f;\nvar toString = {}.toString;\n\nvar windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames\n  ? Object.getOwnPropertyNames(window) : [];\n\nvar getWindowNames = function (it) {\n  try {\n    return gOPN(it);\n  } catch (e) {\n    return windowNames.slice();\n  }\n};\n\nmodule.exports.f = function getOwnPropertyNames(it) {\n  return windowNames && toString.call(it) == '[object Window]' ? getWindowNames(it) : gOPN(toIObject(it));\n};\n","// 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)\nvar $keys = require('./_object-keys-internal');\nvar hiddenKeys = require('./_enum-bug-keys').concat('length', 'prototype');\n\nexports.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {\n  return $keys(O, hiddenKeys);\n};\n","exports.f = Object.getOwnPropertySymbols;\n","// 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O)\nvar has = require('./_has');\nvar toObject = require('./_to-object');\nvar IE_PROTO = require('./_shared-key')('IE_PROTO');\nvar ObjectProto = Object.prototype;\n\nmodule.exports = Object.getPrototypeOf || function (O) {\n  O = toObject(O);\n  if (has(O, IE_PROTO)) return O[IE_PROTO];\n  if (typeof O.constructor == 'function' && O instanceof O.constructor) {\n    return O.constructor.prototype;\n  } return O instanceof Object ? ObjectProto : null;\n};\n","var has = require('./_has');\nvar toIObject = require('./_to-iobject');\nvar arrayIndexOf = require('./_array-includes')(false);\nvar IE_PROTO = require('./_shared-key')('IE_PROTO');\n\nmodule.exports = function (object, names) {\n  var O = toIObject(object);\n  var i = 0;\n  var result = [];\n  var key;\n  for (key in O) if (key != IE_PROTO) has(O, key) && result.push(key);\n  // Don't enum bug & hidden keys\n  while (names.length > i) if (has(O, key = names[i++])) {\n    ~arrayIndexOf(result, key) || result.push(key);\n  }\n  return result;\n};\n","// 19.1.2.14 / 15.2.3.14 Object.keys(O)\nvar $keys = require('./_object-keys-internal');\nvar enumBugKeys = require('./_enum-bug-keys');\n\nmodule.exports = Object.keys || function keys(O) {\n  return $keys(O, enumBugKeys);\n};\n","exports.f = {}.propertyIsEnumerable;\n","// most Object methods by ES6 should accept primitives\nvar $export = require('./_export');\nvar core = require('./_core');\nvar fails = require('./_fails');\nmodule.exports = function (KEY, exec) {\n  var fn = (core.Object || {})[KEY] || Object[KEY];\n  var exp = {};\n  exp[KEY] = exec(fn);\n  $export($export.S + $export.F * fails(function () { fn(1); }), 'Object', exp);\n};\n","module.exports = function (exec) {\n  try {\n    return { e: false, v: exec() };\n  } catch (e) {\n    return { e: true, v: e };\n  }\n};\n","var anObject = require('./_an-object');\nvar isObject = require('./_is-object');\nvar newPromiseCapability = require('./_new-promise-capability');\n\nmodule.exports = function (C, x) {\n  anObject(C);\n  if (isObject(x) && x.constructor === C) return x;\n  var promiseCapability = newPromiseCapability.f(C);\n  var resolve = promiseCapability.resolve;\n  resolve(x);\n  return promiseCapability.promise;\n};\n","module.exports = function (bitmap, value) {\n  return {\n    enumerable: !(bitmap & 1),\n    configurable: !(bitmap & 2),\n    writable: !(bitmap & 4),\n    value: value\n  };\n};\n","var hide = require('./_hide');\nmodule.exports = function (target, src, safe) {\n  for (var key in src) {\n    if (safe && target[key]) target[key] = src[key];\n    else hide(target, key, src[key]);\n  } return target;\n};\n","module.exports = require('./_hide');\n","// Works with __proto__ only. Old v8 can't work with null proto objects.\n/* eslint-disable no-proto */\nvar isObject = require('./_is-object');\nvar anObject = require('./_an-object');\nvar check = function (O, proto) {\n  anObject(O);\n  if (!isObject(proto) && proto !== null) throw TypeError(proto + \": can't set as prototype!\");\n};\nmodule.exports = {\n  set: Object.setPrototypeOf || ('__proto__' in {} ? // eslint-disable-line\n    function (test, buggy, set) {\n      try {\n        set = require('./_ctx')(Function.call, require('./_object-gopd').f(Object.prototype, '__proto__').set, 2);\n        set(test, []);\n        buggy = !(test instanceof Array);\n      } catch (e) { buggy = true; }\n      return function setPrototypeOf(O, proto) {\n        check(O, proto);\n        if (buggy) O.__proto__ = proto;\n        else set(O, proto);\n        return O;\n      };\n    }({}, false) : undefined),\n  check: check\n};\n","'use strict';\nvar global = require('./_global');\nvar core = require('./_core');\nvar dP = require('./_object-dp');\nvar DESCRIPTORS = require('./_descriptors');\nvar SPECIES = require('./_wks')('species');\n\nmodule.exports = function (KEY) {\n  var C = typeof core[KEY] == 'function' ? core[KEY] : global[KEY];\n  if (DESCRIPTORS && C && !C[SPECIES]) dP.f(C, SPECIES, {\n    configurable: true,\n    get: function () { return this; }\n  });\n};\n","var def = require('./_object-dp').f;\nvar has = require('./_has');\nvar TAG = require('./_wks')('toStringTag');\n\nmodule.exports = function (it, tag, stat) {\n  if (it && !has(it = stat ? it : it.prototype, TAG)) def(it, TAG, { configurable: true, value: tag });\n};\n","var shared = require('./_shared')('keys');\nvar uid = require('./_uid');\nmodule.exports = function (key) {\n  return shared[key] || (shared[key] = uid(key));\n};\n","var core = require('./_core');\nvar global = require('./_global');\nvar SHARED = '__core-js_shared__';\nvar store = global[SHARED] || (global[SHARED] = {});\n\n(module.exports = function (key, value) {\n  return store[key] || (store[key] = value !== undefined ? value : {});\n})('versions', []).push({\n  version: core.version,\n  mode: require('./_library') ? 'pure' : 'global',\n  copyright: '© 2019 Denis Pushkarev (zloirock.ru)'\n});\n","// 7.3.20 SpeciesConstructor(O, defaultConstructor)\nvar anObject = require('./_an-object');\nvar aFunction = require('./_a-function');\nvar SPECIES = require('./_wks')('species');\nmodule.exports = function (O, D) {\n  var C = anObject(O).constructor;\n  var S;\n  return C === undefined || (S = anObject(C)[SPECIES]) == undefined ? D : aFunction(S);\n};\n","var toInteger = require('./_to-integer');\nvar defined = require('./_defined');\n// true  -> String#at\n// false -> String#codePointAt\nmodule.exports = function (TO_STRING) {\n  return function (that, pos) {\n    var s = String(defined(that));\n    var i = toInteger(pos);\n    var l = s.length;\n    var a, b;\n    if (i < 0 || i >= l) return TO_STRING ? '' : undefined;\n    a = s.charCodeAt(i);\n    return a < 0xd800 || a > 0xdbff || i + 1 === l || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff\n      ? TO_STRING ? s.charAt(i) : a\n      : TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000;\n  };\n};\n","var ctx = require('./_ctx');\nvar invoke = require('./_invoke');\nvar html = require('./_html');\nvar cel = require('./_dom-create');\nvar global = require('./_global');\nvar process = global.process;\nvar setTask = global.setImmediate;\nvar clearTask = global.clearImmediate;\nvar MessageChannel = global.MessageChannel;\nvar Dispatch = global.Dispatch;\nvar counter = 0;\nvar queue = {};\nvar ONREADYSTATECHANGE = 'onreadystatechange';\nvar defer, channel, port;\nvar run = function () {\n  var id = +this;\n  // eslint-disable-next-line no-prototype-builtins\n  if (queue.hasOwnProperty(id)) {\n    var fn = queue[id];\n    delete queue[id];\n    fn();\n  }\n};\nvar listener = function (event) {\n  run.call(event.data);\n};\n// Node.js 0.9+ & IE10+ has setImmediate, otherwise:\nif (!setTask || !clearTask) {\n  setTask = function setImmediate(fn) {\n    var args = [];\n    var i = 1;\n    while (arguments.length > i) args.push(arguments[i++]);\n    queue[++counter] = function () {\n      // eslint-disable-next-line no-new-func\n      invoke(typeof fn == 'function' ? fn : Function(fn), args);\n    };\n    defer(counter);\n    return counter;\n  };\n  clearTask = function clearImmediate(id) {\n    delete queue[id];\n  };\n  // Node.js 0.8-\n  if (require('./_cof')(process) == 'process') {\n    defer = function (id) {\n      process.nextTick(ctx(run, id, 1));\n    };\n  // Sphere (JS game engine) Dispatch API\n  } else if (Dispatch && Dispatch.now) {\n    defer = function (id) {\n      Dispatch.now(ctx(run, id, 1));\n    };\n  // Browsers with MessageChannel, includes WebWorkers\n  } else if (MessageChannel) {\n    channel = new MessageChannel();\n    port = channel.port2;\n    channel.port1.onmessage = listener;\n    defer = ctx(port.postMessage, port, 1);\n  // Browsers with postMessage, skip WebWorkers\n  // IE8 has postMessage, but it's sync & typeof its postMessage is 'object'\n  } else if (global.addEventListener && typeof postMessage == 'function' && !global.importScripts) {\n    defer = function (id) {\n      global.postMessage(id + '', '*');\n    };\n    global.addEventListener('message', listener, false);\n  // IE8-\n  } else if (ONREADYSTATECHANGE in cel('script')) {\n    defer = function (id) {\n      html.appendChild(cel('script'))[ONREADYSTATECHANGE] = function () {\n        html.removeChild(this);\n        run.call(id);\n      };\n    };\n  // Rest old browsers\n  } else {\n    defer = function (id) {\n      setTimeout(ctx(run, id, 1), 0);\n    };\n  }\n}\nmodule.exports = {\n  set: setTask,\n  clear: clearTask\n};\n","var toInteger = require('./_to-integer');\nvar max = Math.max;\nvar min = Math.min;\nmodule.exports = function (index, length) {\n  index = toInteger(index);\n  return index < 0 ? max(index + length, 0) : min(index, length);\n};\n","// 7.1.4 ToInteger\nvar ceil = Math.ceil;\nvar floor = Math.floor;\nmodule.exports = function (it) {\n  return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);\n};\n","// to indexed object, toObject with fallback for non-array-like ES3 strings\nvar IObject = require('./_iobject');\nvar defined = require('./_defined');\nmodule.exports = function (it) {\n  return IObject(defined(it));\n};\n","// 7.1.15 ToLength\nvar toInteger = require('./_to-integer');\nvar min = Math.min;\nmodule.exports = function (it) {\n  return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991\n};\n","// 7.1.13 ToObject(argument)\nvar defined = require('./_defined');\nmodule.exports = function (it) {\n  return Object(defined(it));\n};\n","// 7.1.1 ToPrimitive(input [, PreferredType])\nvar isObject = require('./_is-object');\n// instead of the ES6 spec version, we didn't implement @@toPrimitive case\n// and the second argument - flag - preferred type is a string\nmodule.exports = function (it, S) {\n  if (!isObject(it)) return it;\n  var fn, val;\n  if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;\n  if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val;\n  if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;\n  throw TypeError(\"Can't convert object to primitive value\");\n};\n","var id = 0;\nvar px = Math.random();\nmodule.exports = function (key) {\n  return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));\n};\n","var global = require('./_global');\nvar navigator = global.navigator;\n\nmodule.exports = navigator && navigator.userAgent || '';\n","var global = require('./_global');\nvar core = require('./_core');\nvar LIBRARY = require('./_library');\nvar wksExt = require('./_wks-ext');\nvar defineProperty = require('./_object-dp').f;\nmodule.exports = function (name) {\n  var $Symbol = core.Symbol || (core.Symbol = LIBRARY ? {} : global.Symbol || {});\n  if (name.charAt(0) != '_' && !(name in $Symbol)) defineProperty($Symbol, name, { value: wksExt.f(name) });\n};\n","exports.f = require('./_wks');\n","var store = require('./_shared')('wks');\nvar uid = require('./_uid');\nvar Symbol = require('./_global').Symbol;\nvar USE_SYMBOL = typeof Symbol == 'function';\n\nvar $exports = module.exports = function (name) {\n  return store[name] || (store[name] =\n    USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name));\n};\n\n$exports.store = store;\n","var classof = require('./_classof');\nvar ITERATOR = require('./_wks')('iterator');\nvar Iterators = require('./_iterators');\nmodule.exports = require('./_core').getIteratorMethod = function (it) {\n  if (it != undefined) return it[ITERATOR]\n    || it['@@iterator']\n    || Iterators[classof(it)];\n};\n","'use strict';\nvar addToUnscopables = require('./_add-to-unscopables');\nvar step = require('./_iter-step');\nvar Iterators = require('./_iterators');\nvar toIObject = require('./_to-iobject');\n\n// 22.1.3.4 Array.prototype.entries()\n// 22.1.3.13 Array.prototype.keys()\n// 22.1.3.29 Array.prototype.values()\n// 22.1.3.30 Array.prototype[@@iterator]()\nmodule.exports = require('./_iter-define')(Array, 'Array', function (iterated, kind) {\n  this._t = toIObject(iterated); // target\n  this._i = 0;                   // next index\n  this._k = kind;                // kind\n// 22.1.5.2.1 %ArrayIteratorPrototype%.next()\n}, function () {\n  var O = this._t;\n  var kind = this._k;\n  var index = this._i++;\n  if (!O || index >= O.length) {\n    this._t = undefined;\n    return step(1);\n  }\n  if (kind == 'keys') return step(0, index);\n  if (kind == 'values') return step(0, O[index]);\n  return step(0, [index, O[index]]);\n}, 'values');\n\n// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)\nIterators.Arguments = Iterators.Array;\n\naddToUnscopables('keys');\naddToUnscopables('values');\naddToUnscopables('entries');\n","var $export = require('./_export');\n// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])\n$export($export.S, 'Object', { create: require('./_object-create') });\n","var $export = require('./_export');\n// 19.1.2.4 / 15.2.3.6 Object.defineProperty(O, P, Attributes)\n$export($export.S + $export.F * !require('./_descriptors'), 'Object', { defineProperty: require('./_object-dp').f });\n","// 19.1.2.6 Object.getOwnPropertyDescriptor(O, P)\nvar toIObject = require('./_to-iobject');\nvar $getOwnPropertyDescriptor = require('./_object-gopd').f;\n\nrequire('./_object-sap')('getOwnPropertyDescriptor', function () {\n  return function getOwnPropertyDescriptor(it, key) {\n    return $getOwnPropertyDescriptor(toIObject(it), key);\n  };\n});\n","// 19.1.2.9 Object.getPrototypeOf(O)\nvar toObject = require('./_to-object');\nvar $getPrototypeOf = require('./_object-gpo');\n\nrequire('./_object-sap')('getPrototypeOf', function () {\n  return function getPrototypeOf(it) {\n    return $getPrototypeOf(toObject(it));\n  };\n});\n","// 19.1.3.19 Object.setPrototypeOf(O, proto)\nvar $export = require('./_export');\n$export($export.S, 'Object', { setPrototypeOf: require('./_set-proto').set });\n","","'use strict';\nvar LIBRARY = require('./_library');\nvar global = require('./_global');\nvar ctx = require('./_ctx');\nvar classof = require('./_classof');\nvar $export = require('./_export');\nvar isObject = require('./_is-object');\nvar aFunction = require('./_a-function');\nvar anInstance = require('./_an-instance');\nvar forOf = require('./_for-of');\nvar speciesConstructor = require('./_species-constructor');\nvar task = require('./_task').set;\nvar microtask = require('./_microtask')();\nvar newPromiseCapabilityModule = require('./_new-promise-capability');\nvar perform = require('./_perform');\nvar userAgent = require('./_user-agent');\nvar promiseResolve = require('./_promise-resolve');\nvar PROMISE = 'Promise';\nvar TypeError = global.TypeError;\nvar process = global.process;\nvar versions = process && process.versions;\nvar v8 = versions && versions.v8 || '';\nvar $Promise = global[PROMISE];\nvar isNode = classof(process) == 'process';\nvar empty = function () { /* empty */ };\nvar Internal, newGenericPromiseCapability, OwnPromiseCapability, Wrapper;\nvar newPromiseCapability = newGenericPromiseCapability = newPromiseCapabilityModule.f;\n\nvar USE_NATIVE = !!function () {\n  try {\n    // correct subclassing with @@species support\n    var promise = $Promise.resolve(1);\n    var FakePromise = (promise.constructor = {})[require('./_wks')('species')] = function (exec) {\n      exec(empty, empty);\n    };\n    // unhandled rejections tracking support, NodeJS Promise without it fails @@species test\n    return (isNode || typeof PromiseRejectionEvent == 'function')\n      && promise.then(empty) instanceof FakePromise\n      // v8 6.6 (Node 10 and Chrome 66) have a bug with resolving custom thenables\n      // https://bugs.chromium.org/p/chromium/issues/detail?id=830565\n      // we can't detect it synchronously, so just check versions\n      && v8.indexOf('6.6') !== 0\n      && userAgent.indexOf('Chrome/66') === -1;\n  } catch (e) { /* empty */ }\n}();\n\n// helpers\nvar isThenable = function (it) {\n  var then;\n  return isObject(it) && typeof (then = it.then) == 'function' ? then : false;\n};\nvar notify = function (promise, isReject) {\n  if (promise._n) return;\n  promise._n = true;\n  var chain = promise._c;\n  microtask(function () {\n    var value = promise._v;\n    var ok = promise._s == 1;\n    var i = 0;\n    var run = function (reaction) {\n      var handler = ok ? reaction.ok : reaction.fail;\n      var resolve = reaction.resolve;\n      var reject = reaction.reject;\n      var domain = reaction.domain;\n      var result, then, exited;\n      try {\n        if (handler) {\n          if (!ok) {\n            if (promise._h == 2) onHandleUnhandled(promise);\n            promise._h = 1;\n          }\n          if (handler === true) result = value;\n          else {\n            if (domain) domain.enter();\n            result = handler(value); // may throw\n            if (domain) {\n              domain.exit();\n              exited = true;\n            }\n          }\n          if (result === reaction.promise) {\n            reject(TypeError('Promise-chain cycle'));\n          } else if (then = isThenable(result)) {\n            then.call(result, resolve, reject);\n          } else resolve(result);\n        } else reject(value);\n      } catch (e) {\n        if (domain && !exited) domain.exit();\n        reject(e);\n      }\n    };\n    while (chain.length > i) run(chain[i++]); // variable length - can't use forEach\n    promise._c = [];\n    promise._n = false;\n    if (isReject && !promise._h) onUnhandled(promise);\n  });\n};\nvar onUnhandled = function (promise) {\n  task.call(global, function () {\n    var value = promise._v;\n    var unhandled = isUnhandled(promise);\n    var result, handler, console;\n    if (unhandled) {\n      result = perform(function () {\n        if (isNode) {\n          process.emit('unhandledRejection', value, promise);\n        } else if (handler = global.onunhandledrejection) {\n          handler({ promise: promise, reason: value });\n        } else if ((console = global.console) && console.error) {\n          console.error('Unhandled promise rejection', value);\n        }\n      });\n      // Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should\n      promise._h = isNode || isUnhandled(promise) ? 2 : 1;\n    } promise._a = undefined;\n    if (unhandled && result.e) throw result.v;\n  });\n};\nvar isUnhandled = function (promise) {\n  return promise._h !== 1 && (promise._a || promise._c).length === 0;\n};\nvar onHandleUnhandled = function (promise) {\n  task.call(global, function () {\n    var handler;\n    if (isNode) {\n      process.emit('rejectionHandled', promise);\n    } else if (handler = global.onrejectionhandled) {\n      handler({ promise: promise, reason: promise._v });\n    }\n  });\n};\nvar $reject = function (value) {\n  var promise = this;\n  if (promise._d) return;\n  promise._d = true;\n  promise = promise._w || promise; // unwrap\n  promise._v = value;\n  promise._s = 2;\n  if (!promise._a) promise._a = promise._c.slice();\n  notify(promise, true);\n};\nvar $resolve = function (value) {\n  var promise = this;\n  var then;\n  if (promise._d) return;\n  promise._d = true;\n  promise = promise._w || promise; // unwrap\n  try {\n    if (promise === value) throw TypeError(\"Promise can't be resolved itself\");\n    if (then = isThenable(value)) {\n      microtask(function () {\n        var wrapper = { _w: promise, _d: false }; // wrap\n        try {\n          then.call(value, ctx($resolve, wrapper, 1), ctx($reject, wrapper, 1));\n        } catch (e) {\n          $reject.call(wrapper, e);\n        }\n      });\n    } else {\n      promise._v = value;\n      promise._s = 1;\n      notify(promise, false);\n    }\n  } catch (e) {\n    $reject.call({ _w: promise, _d: false }, e); // wrap\n  }\n};\n\n// constructor polyfill\nif (!USE_NATIVE) {\n  // 25.4.3.1 Promise(executor)\n  $Promise = function Promise(executor) {\n    anInstance(this, $Promise, PROMISE, '_h');\n    aFunction(executor);\n    Internal.call(this);\n    try {\n      executor(ctx($resolve, this, 1), ctx($reject, this, 1));\n    } catch (err) {\n      $reject.call(this, err);\n    }\n  };\n  // eslint-disable-next-line no-unused-vars\n  Internal = function Promise(executor) {\n    this._c = [];             // <- awaiting reactions\n    this._a = undefined;      // <- checked in isUnhandled reactions\n    this._s = 0;              // <- state\n    this._d = false;          // <- done\n    this._v = undefined;      // <- value\n    this._h = 0;              // <- rejection state, 0 - default, 1 - handled, 2 - unhandled\n    this._n = false;          // <- notify\n  };\n  Internal.prototype = require('./_redefine-all')($Promise.prototype, {\n    // 25.4.5.3 Promise.prototype.then(onFulfilled, onRejected)\n    then: function then(onFulfilled, onRejected) {\n      var reaction = newPromiseCapability(speciesConstructor(this, $Promise));\n      reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true;\n      reaction.fail = typeof onRejected == 'function' && onRejected;\n      reaction.domain = isNode ? process.domain : undefined;\n      this._c.push(reaction);\n      if (this._a) this._a.push(reaction);\n      if (this._s) notify(this, false);\n      return reaction.promise;\n    },\n    // 25.4.5.1 Promise.prototype.catch(onRejected)\n    'catch': function (onRejected) {\n      return this.then(undefined, onRejected);\n    }\n  });\n  OwnPromiseCapability = function () {\n    var promise = new Internal();\n    this.promise = promise;\n    this.resolve = ctx($resolve, promise, 1);\n    this.reject = ctx($reject, promise, 1);\n  };\n  newPromiseCapabilityModule.f = newPromiseCapability = function (C) {\n    return C === $Promise || C === Wrapper\n      ? new OwnPromiseCapability(C)\n      : newGenericPromiseCapability(C);\n  };\n}\n\n$export($export.G + $export.W + $export.F * !USE_NATIVE, { Promise: $Promise });\nrequire('./_set-to-string-tag')($Promise, PROMISE);\nrequire('./_set-species')(PROMISE);\nWrapper = require('./_core')[PROMISE];\n\n// statics\n$export($export.S + $export.F * !USE_NATIVE, PROMISE, {\n  // 25.4.4.5 Promise.reject(r)\n  reject: function reject(r) {\n    var capability = newPromiseCapability(this);\n    var $$reject = capability.reject;\n    $$reject(r);\n    return capability.promise;\n  }\n});\n$export($export.S + $export.F * (LIBRARY || !USE_NATIVE), PROMISE, {\n  // 25.4.4.6 Promise.resolve(x)\n  resolve: function resolve(x) {\n    return promiseResolve(LIBRARY && this === Wrapper ? $Promise : this, x);\n  }\n});\n$export($export.S + $export.F * !(USE_NATIVE && require('./_iter-detect')(function (iter) {\n  $Promise.all(iter)['catch'](empty);\n})), PROMISE, {\n  // 25.4.4.1 Promise.all(iterable)\n  all: function all(iterable) {\n    var C = this;\n    var capability = newPromiseCapability(C);\n    var resolve = capability.resolve;\n    var reject = capability.reject;\n    var result = perform(function () {\n      var values = [];\n      var index = 0;\n      var remaining = 1;\n      forOf(iterable, false, function (promise) {\n        var $index = index++;\n        var alreadyCalled = false;\n        values.push(undefined);\n        remaining++;\n        C.resolve(promise).then(function (value) {\n          if (alreadyCalled) return;\n          alreadyCalled = true;\n          values[$index] = value;\n          --remaining || resolve(values);\n        }, reject);\n      });\n      --remaining || resolve(values);\n    });\n    if (result.e) reject(result.v);\n    return capability.promise;\n  },\n  // 25.4.4.4 Promise.race(iterable)\n  race: function race(iterable) {\n    var C = this;\n    var capability = newPromiseCapability(C);\n    var reject = capability.reject;\n    var result = perform(function () {\n      forOf(iterable, false, function (promise) {\n        C.resolve(promise).then(capability.resolve, reject);\n      });\n    });\n    if (result.e) reject(result.v);\n    return capability.promise;\n  }\n});\n","'use strict';\nvar $at = require('./_string-at')(true);\n\n// 21.1.3.27 String.prototype[@@iterator]()\nrequire('./_iter-define')(String, 'String', function (iterated) {\n  this._t = String(iterated); // target\n  this._i = 0;                // next index\n// 21.1.5.2.1 %StringIteratorPrototype%.next()\n}, function () {\n  var O = this._t;\n  var index = this._i;\n  var point;\n  if (index >= O.length) return { value: undefined, done: true };\n  point = $at(O, index);\n  this._i += point.length;\n  return { value: point, done: false };\n});\n","'use strict';\n// ECMAScript 6 symbols shim\nvar global = require('./_global');\nvar has = require('./_has');\nvar DESCRIPTORS = require('./_descriptors');\nvar $export = require('./_export');\nvar redefine = require('./_redefine');\nvar META = require('./_meta').KEY;\nvar $fails = require('./_fails');\nvar shared = require('./_shared');\nvar setToStringTag = require('./_set-to-string-tag');\nvar uid = require('./_uid');\nvar wks = require('./_wks');\nvar wksExt = require('./_wks-ext');\nvar wksDefine = require('./_wks-define');\nvar enumKeys = require('./_enum-keys');\nvar isArray = require('./_is-array');\nvar anObject = require('./_an-object');\nvar isObject = require('./_is-object');\nvar toIObject = require('./_to-iobject');\nvar toPrimitive = require('./_to-primitive');\nvar createDesc = require('./_property-desc');\nvar _create = require('./_object-create');\nvar gOPNExt = require('./_object-gopn-ext');\nvar $GOPD = require('./_object-gopd');\nvar $DP = require('./_object-dp');\nvar $keys = require('./_object-keys');\nvar gOPD = $GOPD.f;\nvar dP = $DP.f;\nvar gOPN = gOPNExt.f;\nvar $Symbol = global.Symbol;\nvar $JSON = global.JSON;\nvar _stringify = $JSON && $JSON.stringify;\nvar PROTOTYPE = 'prototype';\nvar HIDDEN = wks('_hidden');\nvar TO_PRIMITIVE = wks('toPrimitive');\nvar isEnum = {}.propertyIsEnumerable;\nvar SymbolRegistry = shared('symbol-registry');\nvar AllSymbols = shared('symbols');\nvar OPSymbols = shared('op-symbols');\nvar ObjectProto = Object[PROTOTYPE];\nvar USE_NATIVE = typeof $Symbol == 'function';\nvar QObject = global.QObject;\n// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173\nvar setter = !QObject || !QObject[PROTOTYPE] || !QObject[PROTOTYPE].findChild;\n\n// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687\nvar setSymbolDesc = DESCRIPTORS && $fails(function () {\n  return _create(dP({}, 'a', {\n    get: function () { return dP(this, 'a', { value: 7 }).a; }\n  })).a != 7;\n}) ? function (it, key, D) {\n  var protoDesc = gOPD(ObjectProto, key);\n  if (protoDesc) delete ObjectProto[key];\n  dP(it, key, D);\n  if (protoDesc && it !== ObjectProto) dP(ObjectProto, key, protoDesc);\n} : dP;\n\nvar wrap = function (tag) {\n  var sym = AllSymbols[tag] = _create($Symbol[PROTOTYPE]);\n  sym._k = tag;\n  return sym;\n};\n\nvar isSymbol = USE_NATIVE && typeof $Symbol.iterator == 'symbol' ? function (it) {\n  return typeof it == 'symbol';\n} : function (it) {\n  return it instanceof $Symbol;\n};\n\nvar $defineProperty = function defineProperty(it, key, D) {\n  if (it === ObjectProto) $defineProperty(OPSymbols, key, D);\n  anObject(it);\n  key = toPrimitive(key, true);\n  anObject(D);\n  if (has(AllSymbols, key)) {\n    if (!D.enumerable) {\n      if (!has(it, HIDDEN)) dP(it, HIDDEN, createDesc(1, {}));\n      it[HIDDEN][key] = true;\n    } else {\n      if (has(it, HIDDEN) && it[HIDDEN][key]) it[HIDDEN][key] = false;\n      D = _create(D, { enumerable: createDesc(0, false) });\n    } return setSymbolDesc(it, key, D);\n  } return dP(it, key, D);\n};\nvar $defineProperties = function defineProperties(it, P) {\n  anObject(it);\n  var keys = enumKeys(P = toIObject(P));\n  var i = 0;\n  var l = keys.length;\n  var key;\n  while (l > i) $defineProperty(it, key = keys[i++], P[key]);\n  return it;\n};\nvar $create = function create(it, P) {\n  return P === undefined ? _create(it) : $defineProperties(_create(it), P);\n};\nvar $propertyIsEnumerable = function propertyIsEnumerable(key) {\n  var E = isEnum.call(this, key = toPrimitive(key, true));\n  if (this === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return false;\n  return E || !has(this, key) || !has(AllSymbols, key) || has(this, HIDDEN) && this[HIDDEN][key] ? E : true;\n};\nvar $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(it, key) {\n  it = toIObject(it);\n  key = toPrimitive(key, true);\n  if (it === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return;\n  var D = gOPD(it, key);\n  if (D && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) D.enumerable = true;\n  return D;\n};\nvar $getOwnPropertyNames = function getOwnPropertyNames(it) {\n  var names = gOPN(toIObject(it));\n  var result = [];\n  var i = 0;\n  var key;\n  while (names.length > i) {\n    if (!has(AllSymbols, key = names[i++]) && key != HIDDEN && key != META) result.push(key);\n  } return result;\n};\nvar $getOwnPropertySymbols = function getOwnPropertySymbols(it) {\n  var IS_OP = it === ObjectProto;\n  var names = gOPN(IS_OP ? OPSymbols : toIObject(it));\n  var result = [];\n  var i = 0;\n  var key;\n  while (names.length > i) {\n    if (has(AllSymbols, key = names[i++]) && (IS_OP ? has(ObjectProto, key) : true)) result.push(AllSymbols[key]);\n  } return result;\n};\n\n// 19.4.1.1 Symbol([description])\nif (!USE_NATIVE) {\n  $Symbol = function Symbol() {\n    if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor!');\n    var tag = uid(arguments.length > 0 ? arguments[0] : undefined);\n    var $set = function (value) {\n      if (this === ObjectProto) $set.call(OPSymbols, value);\n      if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;\n      setSymbolDesc(this, tag, createDesc(1, value));\n    };\n    if (DESCRIPTORS && setter) setSymbolDesc(ObjectProto, tag, { configurable: true, set: $set });\n    return wrap(tag);\n  };\n  redefine($Symbol[PROTOTYPE], 'toString', function toString() {\n    return this._k;\n  });\n\n  $GOPD.f = $getOwnPropertyDescriptor;\n  $DP.f = $defineProperty;\n  require('./_object-gopn').f = gOPNExt.f = $getOwnPropertyNames;\n  require('./_object-pie').f = $propertyIsEnumerable;\n  require('./_object-gops').f = $getOwnPropertySymbols;\n\n  if (DESCRIPTORS && !require('./_library')) {\n    redefine(ObjectProto, 'propertyIsEnumerable', $propertyIsEnumerable, true);\n  }\n\n  wksExt.f = function (name) {\n    return wrap(wks(name));\n  };\n}\n\n$export($export.G + $export.W + $export.F * !USE_NATIVE, { Symbol: $Symbol });\n\nfor (var es6Symbols = (\n  // 19.4.2.2, 19.4.2.3, 19.4.2.4, 19.4.2.6, 19.4.2.8, 19.4.2.9, 19.4.2.10, 19.4.2.11, 19.4.2.12, 19.4.2.13, 19.4.2.14\n  'hasInstance,isConcatSpreadable,iterator,match,replace,search,species,split,toPrimitive,toStringTag,unscopables'\n).split(','), j = 0; es6Symbols.length > j;)wks(es6Symbols[j++]);\n\nfor (var wellKnownSymbols = $keys(wks.store), k = 0; wellKnownSymbols.length > k;) wksDefine(wellKnownSymbols[k++]);\n\n$export($export.S + $export.F * !USE_NATIVE, 'Symbol', {\n  // 19.4.2.1 Symbol.for(key)\n  'for': function (key) {\n    return has(SymbolRegistry, key += '')\n      ? SymbolRegistry[key]\n      : SymbolRegistry[key] = $Symbol(key);\n  },\n  // 19.4.2.5 Symbol.keyFor(sym)\n  keyFor: function keyFor(sym) {\n    if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol!');\n    for (var key in SymbolRegistry) if (SymbolRegistry[key] === sym) return key;\n  },\n  useSetter: function () { setter = true; },\n  useSimple: function () { setter = false; }\n});\n\n$export($export.S + $export.F * !USE_NATIVE, 'Object', {\n  // 19.1.2.2 Object.create(O [, Properties])\n  create: $create,\n  // 19.1.2.4 Object.defineProperty(O, P, Attributes)\n  defineProperty: $defineProperty,\n  // 19.1.2.3 Object.defineProperties(O, Properties)\n  defineProperties: $defineProperties,\n  // 19.1.2.6 Object.getOwnPropertyDescriptor(O, P)\n  getOwnPropertyDescriptor: $getOwnPropertyDescriptor,\n  // 19.1.2.7 Object.getOwnPropertyNames(O)\n  getOwnPropertyNames: $getOwnPropertyNames,\n  // 19.1.2.8 Object.getOwnPropertySymbols(O)\n  getOwnPropertySymbols: $getOwnPropertySymbols\n});\n\n// 24.3.2 JSON.stringify(value [, replacer [, space]])\n$JSON && $export($export.S + $export.F * (!USE_NATIVE || $fails(function () {\n  var S = $Symbol();\n  // MS Edge converts symbol values to JSON as {}\n  // WebKit converts symbol values to JSON as null\n  // V8 throws on boxed symbols\n  return _stringify([S]) != '[null]' || _stringify({ a: S }) != '{}' || _stringify(Object(S)) != '{}';\n})), 'JSON', {\n  stringify: function stringify(it) {\n    var args = [it];\n    var i = 1;\n    var replacer, $replacer;\n    while (arguments.length > i) args.push(arguments[i++]);\n    $replacer = replacer = args[1];\n    if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined\n    if (!isArray(replacer)) replacer = function (key, value) {\n      if (typeof $replacer == 'function') value = $replacer.call(this, key, value);\n      if (!isSymbol(value)) return value;\n    };\n    args[1] = replacer;\n    return _stringify.apply($JSON, args);\n  }\n});\n\n// 19.4.3.4 Symbol.prototype[@@toPrimitive](hint)\n$Symbol[PROTOTYPE][TO_PRIMITIVE] || require('./_hide')($Symbol[PROTOTYPE], TO_PRIMITIVE, $Symbol[PROTOTYPE].valueOf);\n// 19.4.3.5 Symbol.prototype[@@toStringTag]\nsetToStringTag($Symbol, 'Symbol');\n// 20.2.1.9 Math[@@toStringTag]\nsetToStringTag(Math, 'Math', true);\n// 24.3.3 JSON[@@toStringTag]\nsetToStringTag(global.JSON, 'JSON', true);\n","// https://github.com/tc39/proposal-promise-finally\n'use strict';\nvar $export = require('./_export');\nvar core = require('./_core');\nvar global = require('./_global');\nvar speciesConstructor = require('./_species-constructor');\nvar promiseResolve = require('./_promise-resolve');\n\n$export($export.P + $export.R, 'Promise', { 'finally': function (onFinally) {\n  var C = speciesConstructor(this, core.Promise || global.Promise);\n  var isFunction = typeof onFinally == 'function';\n  return this.then(\n    isFunction ? function (x) {\n      return promiseResolve(C, onFinally()).then(function () { return x; });\n    } : onFinally,\n    isFunction ? function (e) {\n      return promiseResolve(C, onFinally()).then(function () { throw e; });\n    } : onFinally\n  );\n} });\n","'use strict';\n// https://github.com/tc39/proposal-promise-try\nvar $export = require('./_export');\nvar newPromiseCapability = require('./_new-promise-capability');\nvar perform = require('./_perform');\n\n$export($export.S, 'Promise', { 'try': function (callbackfn) {\n  var promiseCapability = newPromiseCapability.f(this);\n  var result = perform(callbackfn);\n  (result.e ? promiseCapability.reject : promiseCapability.resolve)(result.v);\n  return promiseCapability.promise;\n} });\n","require('./_wks-define')('asyncIterator');\n","require('./_wks-define')('observable');\n","require('./es6.array.iterator');\nvar global = require('./_global');\nvar hide = require('./_hide');\nvar Iterators = require('./_iterators');\nvar TO_STRING_TAG = require('./_wks')('toStringTag');\n\nvar DOMIterables = ('CSSRuleList,CSSStyleDeclaration,CSSValueList,ClientRectList,DOMRectList,DOMStringList,' +\n  'DOMTokenList,DataTransferItemList,FileList,HTMLAllCollection,HTMLCollection,HTMLFormElement,HTMLSelectElement,' +\n  'MediaList,MimeTypeArray,NamedNodeMap,NodeList,PaintRequestList,Plugin,PluginArray,SVGLengthList,SVGNumberList,' +\n  'SVGPathSegList,SVGPointList,SVGStringList,SVGTransformList,SourceBufferList,StyleSheetList,TextTrackCueList,' +\n  'TextTrackList,TouchList').split(',');\n\nfor (var i = 0; i < DOMIterables.length; i++) {\n  var NAME = DOMIterables[i];\n  var Collection = global[NAME];\n  var proto = Collection && Collection.prototype;\n  if (proto && !proto[TO_STRING_TAG]) hide(proto, TO_STRING_TAG, NAME);\n  Iterators[NAME] = Iterators.Array;\n}\n","/**\n * Copyright (c) 2014-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n// This method of obtaining a reference to the global object needs to be\n// kept identical to the way it is obtained in runtime.js\nvar g = (function() { return this })() || Function(\"return this\")();\n\n// Use `getOwnPropertyNames` because not all browsers support calling\n// `hasOwnProperty` on the global `self` object in a worker. See #183.\nvar hadRuntime = g.regeneratorRuntime &&\n  Object.getOwnPropertyNames(g).indexOf(\"regeneratorRuntime\") >= 0;\n\n// Save the old regeneratorRuntime in case it needs to be restored later.\nvar oldRuntime = hadRuntime && g.regeneratorRuntime;\n\n// Force reevalutation of runtime.js.\ng.regeneratorRuntime = undefined;\n\nmodule.exports = require(\"./runtime\");\n\nif (hadRuntime) {\n  // Restore the original runtime.\n  g.regeneratorRuntime = oldRuntime;\n} else {\n  // Remove the global property added by runtime.js.\n  try {\n    delete g.regeneratorRuntime;\n  } catch(e) {\n    g.regeneratorRuntime = undefined;\n  }\n}\n","/**\n * Copyright (c) 2014-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n!(function(global) {\n  \"use strict\";\n\n  var Op = Object.prototype;\n  var hasOwn = Op.hasOwnProperty;\n  var undefined; // More compressible than void 0.\n  var $Symbol = typeof Symbol === \"function\" ? Symbol : {};\n  var iteratorSymbol = $Symbol.iterator || \"@@iterator\";\n  var asyncIteratorSymbol = $Symbol.asyncIterator || \"@@asyncIterator\";\n  var toStringTagSymbol = $Symbol.toStringTag || \"@@toStringTag\";\n\n  var inModule = typeof module === \"object\";\n  var runtime = global.regeneratorRuntime;\n  if (runtime) {\n    if (inModule) {\n      // If regeneratorRuntime is defined globally and we're in a module,\n      // make the exports object identical to regeneratorRuntime.\n      module.exports = runtime;\n    }\n    // Don't bother evaluating the rest of this file if the runtime was\n    // already defined globally.\n    return;\n  }\n\n  // Define the runtime globally (as expected by generated code) as either\n  // module.exports (if we're in a module) or a new, empty object.\n  runtime = global.regeneratorRuntime = inModule ? module.exports : {};\n\n  function wrap(innerFn, outerFn, self, tryLocsList) {\n    // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.\n    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;\n    var generator = Object.create(protoGenerator.prototype);\n    var context = new Context(tryLocsList || []);\n\n    // The ._invoke method unifies the implementations of the .next,\n    // .throw, and .return methods.\n    generator._invoke = makeInvokeMethod(innerFn, self, context);\n\n    return generator;\n  }\n  runtime.wrap = wrap;\n\n  // Try/catch helper to minimize deoptimizations. Returns a completion\n  // record like context.tryEntries[i].completion. This interface could\n  // have been (and was previously) designed to take a closure to be\n  // invoked without arguments, but in all the cases we care about we\n  // already have an existing method we want to call, so there's no need\n  // to create a new function object. We can even get away with assuming\n  // the method takes exactly one argument, since that happens to be true\n  // in every case, so we don't have to touch the arguments object. The\n  // only additional allocation required is the completion record, which\n  // has a stable shape and so hopefully should be cheap to allocate.\n  function tryCatch(fn, obj, arg) {\n    try {\n      return { type: \"normal\", arg: fn.call(obj, arg) };\n    } catch (err) {\n      return { type: \"throw\", arg: err };\n    }\n  }\n\n  var GenStateSuspendedStart = \"suspendedStart\";\n  var GenStateSuspendedYield = \"suspendedYield\";\n  var GenStateExecuting = \"executing\";\n  var GenStateCompleted = \"completed\";\n\n  // Returning this object from the innerFn has the same effect as\n  // breaking out of the dispatch switch statement.\n  var ContinueSentinel = {};\n\n  // Dummy constructor functions that we use as the .constructor and\n  // .constructor.prototype properties for functions that return Generator\n  // objects. For full spec compliance, you may wish to configure your\n  // minifier not to mangle the names of these two functions.\n  function Generator() {}\n  function GeneratorFunction() {}\n  function GeneratorFunctionPrototype() {}\n\n  // This is a polyfill for %IteratorPrototype% for environments that\n  // don't natively support it.\n  var IteratorPrototype = {};\n  IteratorPrototype[iteratorSymbol] = function () {\n    return this;\n  };\n\n  var getProto = Object.getPrototypeOf;\n  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));\n  if (NativeIteratorPrototype &&\n      NativeIteratorPrototype !== Op &&\n      hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {\n    // This environment has a native %IteratorPrototype%; use it instead\n    // of the polyfill.\n    IteratorPrototype = NativeIteratorPrototype;\n  }\n\n  var Gp = GeneratorFunctionPrototype.prototype =\n    Generator.prototype = Object.create(IteratorPrototype);\n  GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;\n  GeneratorFunctionPrototype.constructor = GeneratorFunction;\n  GeneratorFunctionPrototype[toStringTagSymbol] =\n    GeneratorFunction.displayName = \"GeneratorFunction\";\n\n  // Helper for defining the .next, .throw, and .return methods of the\n  // Iterator interface in terms of a single ._invoke method.\n  function defineIteratorMethods(prototype) {\n    [\"next\", \"throw\", \"return\"].forEach(function(method) {\n      prototype[method] = function(arg) {\n        return this._invoke(method, arg);\n      };\n    });\n  }\n\n  runtime.isGeneratorFunction = function(genFun) {\n    var ctor = typeof genFun === \"function\" && genFun.constructor;\n    return ctor\n      ? ctor === GeneratorFunction ||\n        // For the native GeneratorFunction constructor, the best we can\n        // do is to check its .name property.\n        (ctor.displayName || ctor.name) === \"GeneratorFunction\"\n      : false;\n  };\n\n  runtime.mark = function(genFun) {\n    if (Object.setPrototypeOf) {\n      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);\n    } else {\n      genFun.__proto__ = GeneratorFunctionPrototype;\n      if (!(toStringTagSymbol in genFun)) {\n        genFun[toStringTagSymbol] = \"GeneratorFunction\";\n      }\n    }\n    genFun.prototype = Object.create(Gp);\n    return genFun;\n  };\n\n  // Within the body of any async function, `await x` is transformed to\n  // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test\n  // `hasOwn.call(value, \"__await\")` to determine if the yielded value is\n  // meant to be awaited.\n  runtime.awrap = function(arg) {\n    return { __await: arg };\n  };\n\n  function AsyncIterator(generator) {\n    function invoke(method, arg, resolve, reject) {\n      var record = tryCatch(generator[method], generator, arg);\n      if (record.type === \"throw\") {\n        reject(record.arg);\n      } else {\n        var result = record.arg;\n        var value = result.value;\n        if (value &&\n            typeof value === \"object\" &&\n            hasOwn.call(value, \"__await\")) {\n          return Promise.resolve(value.__await).then(function(value) {\n            invoke(\"next\", value, resolve, reject);\n          }, function(err) {\n            invoke(\"throw\", err, resolve, reject);\n          });\n        }\n\n        return Promise.resolve(value).then(function(unwrapped) {\n          // When a yielded Promise is resolved, its final value becomes\n          // the .value of the Promise<{value,done}> result for the\n          // current iteration. If the Promise is rejected, however, the\n          // result for this iteration will be rejected with the same\n          // reason. Note that rejections of yielded Promises are not\n          // thrown back into the generator function, as is the case\n          // when an awaited Promise is rejected. This difference in\n          // behavior between yield and await is important, because it\n          // allows the consumer to decide what to do with the yielded\n          // rejection (swallow it and continue, manually .throw it back\n          // into the generator, abandon iteration, whatever). With\n          // await, by contrast, there is no opportunity to examine the\n          // rejection reason outside the generator function, so the\n          // only option is to throw it from the await expression, and\n          // let the generator function handle the exception.\n          result.value = unwrapped;\n          resolve(result);\n        }, reject);\n      }\n    }\n\n    var previousPromise;\n\n    function enqueue(method, arg) {\n      function callInvokeWithMethodAndArg() {\n        return new Promise(function(resolve, reject) {\n          invoke(method, arg, resolve, reject);\n        });\n      }\n\n      return previousPromise =\n        // If enqueue has been called before, then we want to wait until\n        // all previous Promises have been resolved before calling invoke,\n        // so that results are always delivered in the correct order. If\n        // enqueue has not been called before, then it is important to\n        // call invoke immediately, without waiting on a callback to fire,\n        // so that the async generator function has the opportunity to do\n        // any necessary setup in a predictable way. This predictability\n        // is why the Promise constructor synchronously invokes its\n        // executor callback, and why async functions synchronously\n        // execute code before the first await. Since we implement simple\n        // async functions in terms of async generators, it is especially\n        // important to get this right, even though it requires care.\n        previousPromise ? previousPromise.then(\n          callInvokeWithMethodAndArg,\n          // Avoid propagating failures to Promises returned by later\n          // invocations of the iterator.\n          callInvokeWithMethodAndArg\n        ) : callInvokeWithMethodAndArg();\n    }\n\n    // Define the unified helper method that is used to implement .next,\n    // .throw, and .return (see defineIteratorMethods).\n    this._invoke = enqueue;\n  }\n\n  defineIteratorMethods(AsyncIterator.prototype);\n  AsyncIterator.prototype[asyncIteratorSymbol] = function () {\n    return this;\n  };\n  runtime.AsyncIterator = AsyncIterator;\n\n  // Note that simple async functions are implemented on top of\n  // AsyncIterator objects; they just return a Promise for the value of\n  // the final result produced by the iterator.\n  runtime.async = function(innerFn, outerFn, self, tryLocsList) {\n    var iter = new AsyncIterator(\n      wrap(innerFn, outerFn, self, tryLocsList)\n    );\n\n    return runtime.isGeneratorFunction(outerFn)\n      ? iter // If outerFn is a generator, return the full iterator.\n      : iter.next().then(function(result) {\n          return result.done ? result.value : iter.next();\n        });\n  };\n\n  function makeInvokeMethod(innerFn, self, context) {\n    var state = GenStateSuspendedStart;\n\n    return function invoke(method, arg) {\n      if (state === GenStateExecuting) {\n        throw new Error(\"Generator is already running\");\n      }\n\n      if (state === GenStateCompleted) {\n        if (method === \"throw\") {\n          throw arg;\n        }\n\n        // Be forgiving, per 25.3.3.3.3 of the spec:\n        // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume\n        return doneResult();\n      }\n\n      context.method = method;\n      context.arg = arg;\n\n      while (true) {\n        var delegate = context.delegate;\n        if (delegate) {\n          var delegateResult = maybeInvokeDelegate(delegate, context);\n          if (delegateResult) {\n            if (delegateResult === ContinueSentinel) continue;\n            return delegateResult;\n          }\n        }\n\n        if (context.method === \"next\") {\n          // Setting context._sent for legacy support of Babel's\n          // function.sent implementation.\n          context.sent = context._sent = context.arg;\n\n        } else if (context.method === \"throw\") {\n          if (state === GenStateSuspendedStart) {\n            state = GenStateCompleted;\n            throw context.arg;\n          }\n\n          context.dispatchException(context.arg);\n\n        } else if (context.method === \"return\") {\n          context.abrupt(\"return\", context.arg);\n        }\n\n        state = GenStateExecuting;\n\n        var record = tryCatch(innerFn, self, context);\n        if (record.type === \"normal\") {\n          // If an exception is thrown from innerFn, we leave state ===\n          // GenStateExecuting and loop back for another invocation.\n          state = context.done\n            ? GenStateCompleted\n            : GenStateSuspendedYield;\n\n          if (record.arg === ContinueSentinel) {\n            continue;\n          }\n\n          return {\n            value: record.arg,\n            done: context.done\n          };\n\n        } else if (record.type === \"throw\") {\n          state = GenStateCompleted;\n          // Dispatch the exception by looping back around to the\n          // context.dispatchException(context.arg) call above.\n          context.method = \"throw\";\n          context.arg = record.arg;\n        }\n      }\n    };\n  }\n\n  // Call delegate.iterator[context.method](context.arg) and handle the\n  // result, either by returning a { value, done } result from the\n  // delegate iterator, or by modifying context.method and context.arg,\n  // setting context.delegate to null, and returning the ContinueSentinel.\n  function maybeInvokeDelegate(delegate, context) {\n    var method = delegate.iterator[context.method];\n    if (method === undefined) {\n      // A .throw or .return when the delegate iterator has no .throw\n      // method always terminates the yield* loop.\n      context.delegate = null;\n\n      if (context.method === \"throw\") {\n        if (delegate.iterator.return) {\n          // If the delegate iterator has a return method, give it a\n          // chance to clean up.\n          context.method = \"return\";\n          context.arg = undefined;\n          maybeInvokeDelegate(delegate, context);\n\n          if (context.method === \"throw\") {\n            // If maybeInvokeDelegate(context) changed context.method from\n            // \"return\" to \"throw\", let that override the TypeError below.\n            return ContinueSentinel;\n          }\n        }\n\n        context.method = \"throw\";\n        context.arg = new TypeError(\n          \"The iterator does not provide a 'throw' method\");\n      }\n\n      return ContinueSentinel;\n    }\n\n    var record = tryCatch(method, delegate.iterator, context.arg);\n\n    if (record.type === \"throw\") {\n      context.method = \"throw\";\n      context.arg = record.arg;\n      context.delegate = null;\n      return ContinueSentinel;\n    }\n\n    var info = record.arg;\n\n    if (! info) {\n      context.method = \"throw\";\n      context.arg = new TypeError(\"iterator result is not an object\");\n      context.delegate = null;\n      return ContinueSentinel;\n    }\n\n    if (info.done) {\n      // Assign the result of the finished delegate to the temporary\n      // variable specified by delegate.resultName (see delegateYield).\n      context[delegate.resultName] = info.value;\n\n      // Resume execution at the desired location (see delegateYield).\n      context.next = delegate.nextLoc;\n\n      // If context.method was \"throw\" but the delegate handled the\n      // exception, let the outer generator proceed normally. If\n      // context.method was \"next\", forget context.arg since it has been\n      // \"consumed\" by the delegate iterator. If context.method was\n      // \"return\", allow the original .return call to continue in the\n      // outer generator.\n      if (context.method !== \"return\") {\n        context.method = \"next\";\n        context.arg = undefined;\n      }\n\n    } else {\n      // Re-yield the result returned by the delegate method.\n      return info;\n    }\n\n    // The delegate iterator is finished, so forget it and continue with\n    // the outer generator.\n    context.delegate = null;\n    return ContinueSentinel;\n  }\n\n  // Define Generator.prototype.{next,throw,return} in terms of the\n  // unified ._invoke helper method.\n  defineIteratorMethods(Gp);\n\n  Gp[toStringTagSymbol] = \"Generator\";\n\n  // A Generator should always return itself as the iterator object when the\n  // @@iterator function is called on it. Some browsers' implementations of the\n  // iterator prototype chain incorrectly implement this, causing the Generator\n  // object to not be returned from this call. This ensures that doesn't happen.\n  // See https://github.com/facebook/regenerator/issues/274 for more details.\n  Gp[iteratorSymbol] = function() {\n    return this;\n  };\n\n  Gp.toString = function() {\n    return \"[object Generator]\";\n  };\n\n  function pushTryEntry(locs) {\n    var entry = { tryLoc: locs[0] };\n\n    if (1 in locs) {\n      entry.catchLoc = locs[1];\n    }\n\n    if (2 in locs) {\n      entry.finallyLoc = locs[2];\n      entry.afterLoc = locs[3];\n    }\n\n    this.tryEntries.push(entry);\n  }\n\n  function resetTryEntry(entry) {\n    var record = entry.completion || {};\n    record.type = \"normal\";\n    delete record.arg;\n    entry.completion = record;\n  }\n\n  function Context(tryLocsList) {\n    // The root entry object (effectively a try statement without a catch\n    // or a finally block) gives us a place to store values thrown from\n    // locations where there is no enclosing try statement.\n    this.tryEntries = [{ tryLoc: \"root\" }];\n    tryLocsList.forEach(pushTryEntry, this);\n    this.reset(true);\n  }\n\n  runtime.keys = function(object) {\n    var keys = [];\n    for (var key in object) {\n      keys.push(key);\n    }\n    keys.reverse();\n\n    // Rather than returning an object with a next method, we keep\n    // things simple and return the next function itself.\n    return function next() {\n      while (keys.length) {\n        var key = keys.pop();\n        if (key in object) {\n          next.value = key;\n          next.done = false;\n          return next;\n        }\n      }\n\n      // To avoid creating an additional object, we just hang the .value\n      // and .done properties off the next function object itself. This\n      // also ensures that the minifier will not anonymize the function.\n      next.done = true;\n      return next;\n    };\n  };\n\n  function values(iterable) {\n    if (iterable) {\n      var iteratorMethod = iterable[iteratorSymbol];\n      if (iteratorMethod) {\n        return iteratorMethod.call(iterable);\n      }\n\n      if (typeof iterable.next === \"function\") {\n        return iterable;\n      }\n\n      if (!isNaN(iterable.length)) {\n        var i = -1, next = function next() {\n          while (++i < iterable.length) {\n            if (hasOwn.call(iterable, i)) {\n              next.value = iterable[i];\n              next.done = false;\n              return next;\n            }\n          }\n\n          next.value = undefined;\n          next.done = true;\n\n          return next;\n        };\n\n        return next.next = next;\n      }\n    }\n\n    // Return an iterator with no values.\n    return { next: doneResult };\n  }\n  runtime.values = values;\n\n  function doneResult() {\n    return { value: undefined, done: true };\n  }\n\n  Context.prototype = {\n    constructor: Context,\n\n    reset: function(skipTempReset) {\n      this.prev = 0;\n      this.next = 0;\n      // Resetting context._sent for legacy support of Babel's\n      // function.sent implementation.\n      this.sent = this._sent = undefined;\n      this.done = false;\n      this.delegate = null;\n\n      this.method = \"next\";\n      this.arg = undefined;\n\n      this.tryEntries.forEach(resetTryEntry);\n\n      if (!skipTempReset) {\n        for (var name in this) {\n          // Not sure about the optimal order of these conditions:\n          if (name.charAt(0) === \"t\" &&\n              hasOwn.call(this, name) &&\n              !isNaN(+name.slice(1))) {\n            this[name] = undefined;\n          }\n        }\n      }\n    },\n\n    stop: function() {\n      this.done = true;\n\n      var rootEntry = this.tryEntries[0];\n      var rootRecord = rootEntry.completion;\n      if (rootRecord.type === \"throw\") {\n        throw rootRecord.arg;\n      }\n\n      return this.rval;\n    },\n\n    dispatchException: function(exception) {\n      if (this.done) {\n        throw exception;\n      }\n\n      var context = this;\n      function handle(loc, caught) {\n        record.type = \"throw\";\n        record.arg = exception;\n        context.next = loc;\n\n        if (caught) {\n          // If the dispatched exception was caught by a catch block,\n          // then let that catch block handle the exception normally.\n          context.method = \"next\";\n          context.arg = undefined;\n        }\n\n        return !! caught;\n      }\n\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        var record = entry.completion;\n\n        if (entry.tryLoc === \"root\") {\n          // Exception thrown outside of any try block that could handle\n          // it, so set the completion value of the entire function to\n          // throw the exception.\n          return handle(\"end\");\n        }\n\n        if (entry.tryLoc <= this.prev) {\n          var hasCatch = hasOwn.call(entry, \"catchLoc\");\n          var hasFinally = hasOwn.call(entry, \"finallyLoc\");\n\n          if (hasCatch && hasFinally) {\n            if (this.prev < entry.catchLoc) {\n              return handle(entry.catchLoc, true);\n            } else if (this.prev < entry.finallyLoc) {\n              return handle(entry.finallyLoc);\n            }\n\n          } else if (hasCatch) {\n            if (this.prev < entry.catchLoc) {\n              return handle(entry.catchLoc, true);\n            }\n\n          } else if (hasFinally) {\n            if (this.prev < entry.finallyLoc) {\n              return handle(entry.finallyLoc);\n            }\n\n          } else {\n            throw new Error(\"try statement without catch or finally\");\n          }\n        }\n      }\n    },\n\n    abrupt: function(type, arg) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.tryLoc <= this.prev &&\n            hasOwn.call(entry, \"finallyLoc\") &&\n            this.prev < entry.finallyLoc) {\n          var finallyEntry = entry;\n          break;\n        }\n      }\n\n      if (finallyEntry &&\n          (type === \"break\" ||\n           type === \"continue\") &&\n          finallyEntry.tryLoc <= arg &&\n          arg <= finallyEntry.finallyLoc) {\n        // Ignore the finally entry if control is not jumping to a\n        // location outside the try/catch block.\n        finallyEntry = null;\n      }\n\n      var record = finallyEntry ? finallyEntry.completion : {};\n      record.type = type;\n      record.arg = arg;\n\n      if (finallyEntry) {\n        this.method = \"next\";\n        this.next = finallyEntry.finallyLoc;\n        return ContinueSentinel;\n      }\n\n      return this.complete(record);\n    },\n\n    complete: function(record, afterLoc) {\n      if (record.type === \"throw\") {\n        throw record.arg;\n      }\n\n      if (record.type === \"break\" ||\n          record.type === \"continue\") {\n        this.next = record.arg;\n      } else if (record.type === \"return\") {\n        this.rval = this.arg = record.arg;\n        this.method = \"return\";\n        this.next = \"end\";\n      } else if (record.type === \"normal\" && afterLoc) {\n        this.next = afterLoc;\n      }\n\n      return ContinueSentinel;\n    },\n\n    finish: function(finallyLoc) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.finallyLoc === finallyLoc) {\n          this.complete(entry.completion, entry.afterLoc);\n          resetTryEntry(entry);\n          return ContinueSentinel;\n        }\n      }\n    },\n\n    \"catch\": function(tryLoc) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.tryLoc === tryLoc) {\n          var record = entry.completion;\n          if (record.type === \"throw\") {\n            var thrown = record.arg;\n            resetTryEntry(entry);\n          }\n          return thrown;\n        }\n      }\n\n      // The context.catch method must only be called with a location\n      // argument that corresponds to a known catch block.\n      throw new Error(\"illegal catch attempt\");\n    },\n\n    delegateYield: function(iterable, resultName, nextLoc) {\n      this.delegate = {\n        iterator: values(iterable),\n        resultName: resultName,\n        nextLoc: nextLoc\n      };\n\n      if (this.method === \"next\") {\n        // Deliberately forget the last sent value so that we don't\n        // accidentally pass it on to the delegate.\n        this.arg = undefined;\n      }\n\n      return ContinueSentinel;\n    }\n  };\n})(\n  // In sloppy mode, unbound `this` refers to the global object, fallback to\n  // Function constructor if we're in global strict mode. That is sadly a form\n  // of indirect eval which violates Content Security Policy.\n  (function() { return this })() || Function(\"return this\")()\n);\n"," /* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n  return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n  return blob.trim().split('\\n').map(function(line) {\n    return line.trim();\n  });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n  var parts = blob.split('\\nm=');\n  return parts.map(function(part, index) {\n    return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n  });\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n  return SDPUtils.splitLines(blob).filter(function(line) {\n    return line.indexOf(prefix) === 0;\n  });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n  var parts;\n  // Parse both variants.\n  if (line.indexOf('a=candidate:') === 0) {\n    parts = line.substring(12).split(' ');\n  } else {\n    parts = line.substring(10).split(' ');\n  }\n\n  var candidate = {\n    foundation: parts[0],\n    component: parts[1],\n    protocol: parts[2].toLowerCase(),\n    priority: parseInt(parts[3], 10),\n    ip: parts[4],\n    port: parseInt(parts[5], 10),\n    // skip parts[6] == 'typ'\n    type: parts[7]\n  };\n\n  for (var i = 8; i < parts.length; i += 2) {\n    switch (parts[i]) {\n      case 'raddr':\n        candidate.relatedAddress = parts[i + 1];\n        break;\n      case 'rport':\n        candidate.relatedPort = parseInt(parts[i + 1], 10);\n        break;\n      case 'tcptype':\n        candidate.tcpType = parts[i + 1];\n        break;\n      default: // extension handling, in particular ufrag\n        candidate[parts[i]] = parts[i + 1];\n        break;\n    }\n  }\n  return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n  var sdp = [];\n  sdp.push(candidate.foundation);\n  sdp.push(candidate.component);\n  sdp.push(candidate.protocol.toUpperCase());\n  sdp.push(candidate.priority);\n  sdp.push(candidate.ip);\n  sdp.push(candidate.port);\n\n  var type = candidate.type;\n  sdp.push('typ');\n  sdp.push(type);\n  if (type !== 'host' && candidate.relatedAddress &&\n      candidate.relatedPort) {\n    sdp.push('raddr');\n    sdp.push(candidate.relatedAddress); // was: relAddr\n    sdp.push('rport');\n    sdp.push(candidate.relatedPort); // was: relPort\n  }\n  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n    sdp.push('tcptype');\n    sdp.push(candidate.tcpType);\n  }\n  return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an ice-options line, returns an array of option tags.\n// a=ice-options:foo bar\nSDPUtils.parseIceOptions = function(line) {\n  return line.substr(14).split(' ');\n}\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n  var parts = line.substr(9).split(' ');\n  var parsed = {\n    payloadType: parseInt(parts.shift(), 10) // was: id\n  };\n\n  parts = parts[0].split('/');\n\n  parsed.name = parts[0];\n  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n  // was: channels\n  parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n  return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n      (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n  var parts = line.substr(9).split(' ');\n  return {\n    id: parseInt(parts[0], 10),\n    direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',\n    uri: parts[1]\n  };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n      (headerExtension.direction && headerExtension.direction !== 'sendrecv'\n          ? '/' + headerExtension.direction\n          : '') +\n      ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n  var parsed = {};\n  var kv;\n  var parts = line.substr(line.indexOf(' ') + 1).split(';');\n  for (var j = 0; j < parts.length; j++) {\n    kv = parts[j].trim().split('=');\n    parsed[kv[0].trim()] = kv[1];\n  }\n  return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n  var line = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.parameters && Object.keys(codec.parameters).length) {\n    var params = [];\n    Object.keys(codec.parameters).forEach(function(param) {\n      params.push(param + '=' + codec.parameters[param]);\n    });\n    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n  }\n  return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n  var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n  return {\n    type: parts.shift(),\n    parameter: parts.join(' ')\n  };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n  var lines = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n    // FIXME: special handling for trr-int?\n    codec.rtcpFeedback.forEach(function(fb) {\n      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n          '\\r\\n';\n    });\n  }\n  return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n  var sp = line.indexOf(' ');\n  var parts = {\n    ssrc: parseInt(line.substr(7, sp - 7), 10)\n  };\n  var colon = line.indexOf(':', sp);\n  if (colon > -1) {\n    parts.attribute = line.substr(sp + 1, colon - sp - 1);\n    parts.value = line.substr(colon + 1);\n  } else {\n    parts.attribute = line.substr(sp + 1);\n  }\n  return parts;\n};\n\n// Extracts the MID (RFC 5888) from a media section.\n// returns the MID or undefined if no mid line was found.\nSDPUtils.getMid = function(mediaSection) {\n  var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];\n  if (mid) {\n    return mid.substr(6);\n  }\n}\n\nSDPUtils.parseFingerprint = function(line) {\n  var parts = line.substr(14).split(' ');\n  return {\n    algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.\n    value: parts[1]\n  };\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n      'a=fingerprint:');\n  // Note: a=setup line is ignored since we use the 'auto' role.\n  // Note2: 'algorithm' is not case sensitive except in Edge.\n  return {\n    role: 'auto',\n    fingerprints: lines.map(SDPUtils.parseFingerprint)\n  };\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n  var sdp = 'a=setup:' + setupType + '\\r\\n';\n  params.fingerprints.forEach(function(fp) {\n    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n  });\n  return sdp;\n};\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var iceParameters = {\n    usernameFragment: lines.filter(function(line) {\n      return line.indexOf('a=ice-ufrag:') === 0;\n    })[0].substr(12),\n    password: lines.filter(function(line) {\n      return line.indexOf('a=ice-pwd:') === 0;\n    })[0].substr(10)\n  };\n  return iceParameters;\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n  return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n      'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n  var description = {\n    codecs: [],\n    headerExtensions: [],\n    fecMechanisms: [],\n    rtcp: []\n  };\n  var lines = SDPUtils.splitLines(mediaSection);\n  var mline = lines[0].split(' ');\n  for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n    var pt = mline[i];\n    var rtpmapline = SDPUtils.matchPrefix(\n        mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n    if (rtpmapline) {\n      var codec = SDPUtils.parseRtpMap(rtpmapline);\n      var fmtps = SDPUtils.matchPrefix(\n          mediaSection, 'a=fmtp:' + pt + ' ');\n      // Only the first a=fmtp:<pt> is considered.\n      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n      codec.rtcpFeedback = SDPUtils.matchPrefix(\n          mediaSection, 'a=rtcp-fb:' + pt + ' ')\n        .map(SDPUtils.parseRtcpFb);\n      description.codecs.push(codec);\n      // parse FEC mechanisms from rtpmap lines.\n      switch (codec.name.toUpperCase()) {\n        case 'RED':\n        case 'ULPFEC':\n          description.fecMechanisms.push(codec.name.toUpperCase());\n          break;\n        default: // only RED and ULPFEC are recognized as FEC mechanisms.\n          break;\n      }\n    }\n  }\n  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n    description.headerExtensions.push(SDPUtils.parseExtmap(line));\n  });\n  // FIXME: parse rtcp.\n  return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n  var sdp = '';\n\n  // Build the mline.\n  sdp += 'm=' + kind + ' ';\n  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n  sdp += ' UDP/TLS/RTP/SAVPF ';\n  sdp += caps.codecs.map(function(codec) {\n    if (codec.preferredPayloadType !== undefined) {\n      return codec.preferredPayloadType;\n    }\n    return codec.payloadType;\n  }).join(' ') + '\\r\\n';\n\n  sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n  caps.codecs.forEach(function(codec) {\n    sdp += SDPUtils.writeRtpMap(codec);\n    sdp += SDPUtils.writeFmtp(codec);\n    sdp += SDPUtils.writeRtcpFb(codec);\n  });\n  var maxptime = 0;\n  caps.codecs.forEach(function(codec) {\n    if (codec.maxptime > maxptime) {\n      maxptime = codec.maxptime;\n    }\n  });\n  if (maxptime > 0) {\n    sdp += 'a=maxptime:' + maxptime + '\\r\\n';\n  }\n  sdp += 'a=rtcp-mux\\r\\n';\n\n  caps.headerExtensions.forEach(function(extension) {\n    sdp += SDPUtils.writeExtmap(extension);\n  });\n  // FIXME: write fecMechanisms.\n  return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n  var encodingParameters = [];\n  var description = SDPUtils.parseRtpParameters(mediaSection);\n  var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n  var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n  // filter a=ssrc:... cname:, ignore PlanB-msid\n  var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n  .map(function(line) {\n    return SDPUtils.parseSsrcMedia(line);\n  })\n  .filter(function(parts) {\n    return parts.attribute === 'cname';\n  });\n  var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n  var secondarySsrc;\n\n  var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n  .map(function(line) {\n    var parts = line.split(' ');\n    parts.shift();\n    return parts.map(function(part) {\n      return parseInt(part, 10);\n    });\n  });\n  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n    secondarySsrc = flows[0][1];\n  }\n\n  description.codecs.forEach(function(codec) {\n    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n      var encParam = {\n        ssrc: primarySsrc,\n        codecPayloadType: parseInt(codec.parameters.apt, 10),\n        rtx: {\n          ssrc: secondarySsrc\n        }\n      };\n      encodingParameters.push(encParam);\n      if (hasRed) {\n        encParam = JSON.parse(JSON.stringify(encParam));\n        encParam.fec = {\n          ssrc: secondarySsrc,\n          mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n        };\n        encodingParameters.push(encParam);\n      }\n    }\n  });\n  if (encodingParameters.length === 0 && primarySsrc) {\n    encodingParameters.push({\n      ssrc: primarySsrc\n    });\n  }\n\n  // we support both b=AS and b=TIAS but interpret AS as TIAS.\n  var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n  if (bandwidth.length) {\n    if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(7), 10);\n    } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(5), 10);\n    }\n    encodingParameters.forEach(function(params) {\n      params.maxBitrate = bandwidth;\n    });\n  }\n  return encodingParameters;\n};\n\n// parses http://draft.ortc.org/#rtcrtcpparameters*\nSDPUtils.parseRtcpParameters = function(mediaSection) {\n  var rtcpParameters = {};\n\n  var cname;\n  // Gets the first SSRC. Note that with RTX there might be multiple\n  // SSRCs.\n  var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n      .map(function(line) {\n        return SDPUtils.parseSsrcMedia(line);\n      })\n      .filter(function(obj) {\n        return obj.attribute === 'cname';\n      })[0];\n  if (remoteSsrc) {\n    rtcpParameters.cname = remoteSsrc.value;\n    rtcpParameters.ssrc = remoteSsrc.ssrc;\n  }\n\n  // Edge uses the compound attribute instead of reducedSize\n  // compound is !reducedSize\n  var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');\n  rtcpParameters.reducedSize = rsize.length > 0;\n  rtcpParameters.compound = rsize.length === 0;\n\n  // parses the rtcp-mux attrіbute.\n  // Note that Edge does not support unmuxed RTCP.\n  var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');\n  rtcpParameters.mux = mux.length > 0;\n\n  return rtcpParameters;\n};\n\n// parses either a=msid: or a=ssrc:... msid lines and returns\n// the id of the MediaStream and MediaStreamTrack.\nSDPUtils.parseMsid = function(mediaSection) {\n  var parts;\n  var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');\n  if (spec.length === 1) {\n    parts = spec[0].substr(7).split(' ');\n    return {stream: parts[0], track: parts[1]};\n  }\n  var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n  .map(function(line) {\n    return SDPUtils.parseSsrcMedia(line);\n  })\n  .filter(function(parts) {\n    return parts.attribute === 'msid';\n  });\n  if (planB.length > 0) {\n    parts = planB[0].value.split(' ');\n    return {stream: parts[0], track: parts[1]};\n  }\n};\n\nSDPUtils.writeSessionBoilerplate = function() {\n  // FIXME: sess-id should be an NTP timestamp.\n  return 'v=0\\r\\n' +\n      'o=thisisadapterortc 8169639915646943137 2 IN IP4 127.0.0.1\\r\\n' +\n      's=-\\r\\n' +\n      't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n  // Map ICE parameters (ufrag, pwd) to SDP.\n  sdp += SDPUtils.writeIceParameters(\n      transceiver.iceGatherer.getLocalParameters());\n\n  // Map DTLS parameters to SDP.\n  sdp += SDPUtils.writeDtlsParameters(\n      transceiver.dtlsTransport.getLocalParameters(),\n      type === 'offer' ? 'actpass' : 'active');\n\n  sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n  if (transceiver.direction) {\n    sdp += 'a=' + transceiver.direction + '\\r\\n';\n  } else if (transceiver.rtpSender && transceiver.rtpReceiver) {\n    sdp += 'a=sendrecv\\r\\n';\n  } else if (transceiver.rtpSender) {\n    sdp += 'a=sendonly\\r\\n';\n  } else if (transceiver.rtpReceiver) {\n    sdp += 'a=recvonly\\r\\n';\n  } else {\n    sdp += 'a=inactive\\r\\n';\n  }\n\n  if (transceiver.rtpSender) {\n    // spec.\n    var msid = 'msid:' + stream.id + ' ' +\n        transceiver.rtpSender.track.id + '\\r\\n';\n    sdp += 'a=' + msid;\n\n    // for Chrome.\n    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n        ' ' + msid;\n    if (transceiver.sendEncodingParameters[0].rtx) {\n      sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n          ' ' + msid;\n      sdp += 'a=ssrc-group:FID ' +\n          transceiver.sendEncodingParameters[0].ssrc + ' ' +\n          transceiver.sendEncodingParameters[0].rtx.ssrc +\n          '\\r\\n';\n    }\n  }\n  // FIXME: this should be written by writeRtpDescription.\n  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n      ' cname:' + SDPUtils.localCName + '\\r\\n';\n  if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {\n    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n        ' cname:' + SDPUtils.localCName + '\\r\\n';\n  }\n  return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n  var lines = SDPUtils.splitLines(mediaSection);\n  for (var i = 0; i < lines.length; i++) {\n    switch (lines[i]) {\n      case 'a=sendrecv':\n      case 'a=sendonly':\n      case 'a=recvonly':\n      case 'a=inactive':\n        return lines[i].substr(2);\n      default:\n        // FIXME: What should happen here?\n    }\n  }\n  if (sessionpart) {\n    return SDPUtils.getDirection(sessionpart);\n  }\n  return 'sendrecv';\n};\n\nSDPUtils.getKind = function(mediaSection) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  var mline = lines[0].split(' ');\n  return mline[0].substr(2);\n};\n\nSDPUtils.isRejected = function(mediaSection) {\n  return mediaSection.split(' ', 2)[1] === '0';\n};\n\n// Expose public methods.\nmodule.exports = SDPUtils;\n","/**\n * Convert array of 16 byte values to UUID string format of the form:\n * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX\n */\nvar byteToHex = [];\nfor (var i = 0; i < 256; ++i) {\n  byteToHex[i] = (i + 0x100).toString(16).substr(1);\n}\n\nfunction bytesToUuid(buf, offset) {\n  var i = offset || 0;\n  var bth = byteToHex;\n  // join used to fix memory issue caused by concatenation: https://bugs.chromium.org/p/v8/issues/detail?id=3175#c4\n  return ([bth[buf[i++]], bth[buf[i++]], \n\tbth[buf[i++]], bth[buf[i++]], '-',\n\tbth[buf[i++]], bth[buf[i++]], '-',\n\tbth[buf[i++]], bth[buf[i++]], '-',\n\tbth[buf[i++]], bth[buf[i++]], '-',\n\tbth[buf[i++]], bth[buf[i++]],\n\tbth[buf[i++]], bth[buf[i++]],\n\tbth[buf[i++]], bth[buf[i++]]]).join('');\n}\n\nmodule.exports = bytesToUuid;\n","// Unique ID creation requires a high quality random # generator.  In the\n// browser this is a little complicated due to unknown quality of Math.random()\n// and inconsistent support for the `crypto` API.  We do the best we can via\n// feature-detection\n\n// getRandomValues needs to be invoked in a context where \"this\" is a Crypto\n// implementation. Also, find the complete implementation of crypto on IE11.\nvar getRandomValues = (typeof(crypto) != 'undefined' && crypto.getRandomValues && crypto.getRandomValues.bind(crypto)) ||\n                      (typeof(msCrypto) != 'undefined' && typeof window.msCrypto.getRandomValues == 'function' && msCrypto.getRandomValues.bind(msCrypto));\n\nif (getRandomValues) {\n  // WHATWG crypto RNG - http://wiki.whatwg.org/wiki/Crypto\n  var rnds8 = new Uint8Array(16); // eslint-disable-line no-undef\n\n  module.exports = function whatwgRNG() {\n    getRandomValues(rnds8);\n    return rnds8;\n  };\n} else {\n  // Math.random()-based (RNG)\n  //\n  // If all else fails, use Math.random().  It's fast, but is of unspecified\n  // quality.\n  var rnds = new Array(16);\n\n  module.exports = function mathRNG() {\n    for (var i = 0, r; i < 16; i++) {\n      if ((i & 0x03) === 0) r = Math.random() * 0x100000000;\n      rnds[i] = r >>> ((i & 0x03) << 3) & 0xff;\n    }\n\n    return rnds;\n  };\n}\n","var rng = require('./lib/rng');\nvar bytesToUuid = require('./lib/bytesToUuid');\n\nfunction v4(options, buf, offset) {\n  var i = buf && offset || 0;\n\n  if (typeof(options) == 'string') {\n    buf = options === 'binary' ? new Array(16) : null;\n    options = null;\n  }\n  options = options || {};\n\n  var rnds = options.random || (options.rng || rng)();\n\n  // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`\n  rnds[6] = (rnds[6] & 0x0f) | 0x40;\n  rnds[8] = (rnds[8] & 0x3f) | 0x80;\n\n  // Copy bytes to buffer, if provided\n  if (buf) {\n    for (var ii = 0; ii < 16; ++ii) {\n      buf[i + ii] = rnds[ii];\n    }\n  }\n\n  return buf || bytesToUuid(rnds);\n}\n\nmodule.exports = v4;\n","/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n\n'use strict';\n\n// Shimming starts here.\n(function() {\n  // Utils.\n  var logging = require('./utils').log;\n  var browserDetails = require('./utils').browserDetails;\n  // Export to the adapter global object visible in the browser.\n  module.exports.browserDetails = browserDetails;\n  module.exports.extractVersion = require('./utils').extractVersion;\n  module.exports.disableLog = require('./utils').disableLog;\n\n  // Uncomment the line below if you want logging to occur, including logging\n  // for the switch statement below. Can also be turned on in the browser via\n  // adapter.disableLog(false), but then logging from the switch statement below\n  // will not appear.\n  // require('./utils').disableLog(false);\n\n  // Browser shims.\n  var chromeShim = require('./chrome/chrome_shim') || null;\n  var edgeShim = require('./edge/edge_shim') || null;\n  var firefoxShim = require('./firefox/firefox_shim') || null;\n  var safariShim = require('./safari/safari_shim') || null;\n\n  // Shim browser if found.\n  switch (browserDetails.browser) {\n    case 'opera': // fallthrough as it uses chrome shims\n    case 'chrome':\n      if (!chromeShim || !chromeShim.shimPeerConnection) {\n        logging('Chrome shim is not included in this adapter release.');\n        return;\n      }\n      logging('adapter.js shimming chrome.');\n      // Export to the adapter global object visible in the browser.\n      module.exports.browserShim = chromeShim;\n\n      chromeShim.shimGetUserMedia();\n      chromeShim.shimMediaStream();\n      chromeShim.shimSourceObject();\n      chromeShim.shimPeerConnection();\n      chromeShim.shimOnTrack();\n      break;\n    case 'firefox':\n      if (!firefoxShim || !firefoxShim.shimPeerConnection) {\n        logging('Firefox shim is not included in this adapter release.');\n        return;\n      }\n      logging('adapter.js shimming firefox.');\n      // Export to the adapter global object visible in the browser.\n      module.exports.browserShim = firefoxShim;\n\n      firefoxShim.shimGetUserMedia();\n      firefoxShim.shimSourceObject();\n      firefoxShim.shimPeerConnection();\n      firefoxShim.shimOnTrack();\n      break;\n    case 'edge':\n      if (!edgeShim || !edgeShim.shimPeerConnection) {\n        logging('MS edge shim is not included in this adapter release.');\n        return;\n      }\n      logging('adapter.js shimming edge.');\n      // Export to the adapter global object visible in the browser.\n      module.exports.browserShim = edgeShim;\n\n      edgeShim.shimGetUserMedia();\n      edgeShim.shimPeerConnection();\n      break;\n    case 'safari':\n      if (!safariShim) {\n        logging('Safari shim is not included in this adapter release.');\n        return;\n      }\n      logging('adapter.js shimming safari.');\n      // Export to the adapter global object visible in the browser.\n      module.exports.browserShim = safariShim;\n\n      safariShim.shimGetUserMedia();\n      break;\n    default:\n      logging('Unsupported browser!');\n  }\n})();\n","\n/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\nvar logging = require('../utils.js').log;\nvar browserDetails = require('../utils.js').browserDetails;\n\nvar chromeShim = {\n  shimMediaStream: function() {\n    window.MediaStream = window.MediaStream || window.webkitMediaStream;\n  },\n\n  shimOnTrack: function() {\n    if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in\n        window.RTCPeerConnection.prototype)) {\n      Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {\n        get: function() {\n          return this._ontrack;\n        },\n        set: function(f) {\n          var self = this;\n          if (this._ontrack) {\n            this.removeEventListener('track', this._ontrack);\n            this.removeEventListener('addstream', this._ontrackpoly);\n          }\n          this.addEventListener('track', this._ontrack = f);\n          this.addEventListener('addstream', this._ontrackpoly = function(e) {\n            // onaddstream does not fire when a track is added to an existing\n            // stream. But stream.onaddtrack is implemented so we use that.\n            e.stream.addEventListener('addtrack', function(te) {\n              var event = new Event('track');\n              event.track = te.track;\n              event.receiver = {track: te.track};\n              event.streams = [e.stream];\n              self.dispatchEvent(event);\n            });\n            e.stream.getTracks().forEach(function(track) {\n              var event = new Event('track');\n              event.track = track;\n              event.receiver = {track: track};\n              event.streams = [e.stream];\n              this.dispatchEvent(event);\n            }.bind(this));\n          }.bind(this));\n        }\n      });\n    }\n  },\n\n  shimSourceObject: function() {\n    if (typeof window === 'object') {\n      if (window.HTMLMediaElement &&\n        !('srcObject' in window.HTMLMediaElement.prototype)) {\n        // Shim the srcObject property, once, when HTMLMediaElement is found.\n        Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', {\n          get: function() {\n            return this._srcObject;\n          },\n          set: function(stream) {\n            var self = this;\n            // Use _srcObject as a private property for this shim\n            this._srcObject = stream;\n            if (this.src) {\n              URL.revokeObjectURL(this.src);\n            }\n\n            if (!stream) {\n              this.src = '';\n              return;\n            }\n            this.src = URL.createObjectURL(stream);\n            // We need to recreate the blob url when a track is added or\n            // removed. Doing it manually since we want to avoid a recursion.\n            stream.addEventListener('addtrack', function() {\n              if (self.src) {\n                URL.revokeObjectURL(self.src);\n              }\n              self.src = URL.createObjectURL(stream);\n            });\n            stream.addEventListener('removetrack', function() {\n              if (self.src) {\n                URL.revokeObjectURL(self.src);\n              }\n              self.src = URL.createObjectURL(stream);\n            });\n          }\n        });\n      }\n    }\n  },\n\n  shimPeerConnection: function() {\n    // The RTCPeerConnection object.\n    window.RTCPeerConnection = function(pcConfig, pcConstraints) {\n      // Translate iceTransportPolicy to iceTransports,\n      // see https://code.google.com/p/webrtc/issues/detail?id=4869\n      logging('PeerConnection');\n      if (pcConfig && pcConfig.iceTransportPolicy) {\n        pcConfig.iceTransports = pcConfig.iceTransportPolicy;\n      }\n\n      var pc = new webkitRTCPeerConnection(pcConfig, pcConstraints);\n      var origGetStats = pc.getStats.bind(pc);\n      pc.getStats = function(selector, successCallback, errorCallback) {\n        var self = this;\n        var args = arguments;\n\n        // If selector is a function then we are in the old style stats so just\n        // pass back the original getStats format to avoid breaking old users.\n        if (arguments.length > 0 && typeof selector === 'function') {\n          return origGetStats(selector, successCallback);\n        }\n\n        var fixChromeStats_ = function(response) {\n          var standardReport = {};\n          var reports = response.result();\n          reports.forEach(function(report) {\n            var standardStats = {\n              id: report.id,\n              timestamp: report.timestamp,\n              type: report.type\n            };\n            report.names().forEach(function(name) {\n              standardStats[name] = report.stat(name);\n            });\n            standardReport[standardStats.id] = standardStats;\n          });\n\n          return standardReport;\n        };\n\n        // shim getStats with maplike support\n        var makeMapStats = function(stats, legacyStats) {\n          var map = new Map(Object.keys(stats).map(function(key) {\n            return[key, stats[key]];\n          }));\n          legacyStats = legacyStats || stats;\n          Object.keys(legacyStats).forEach(function(key) {\n            map[key] = legacyStats[key];\n          });\n          return map;\n        };\n\n        if (arguments.length >= 2) {\n          var successCallbackWrapper_ = function(response) {\n            args[1](makeMapStats(fixChromeStats_(response)));\n          };\n\n          return origGetStats.apply(this, [successCallbackWrapper_,\n              arguments[0]]);\n        }\n\n        // promise-support\n        return new Promise(function(resolve, reject) {\n          if (args.length === 1 && typeof selector === 'object') {\n            origGetStats.apply(self, [\n              function(response) {\n                resolve(makeMapStats(fixChromeStats_(response)));\n              }, reject]);\n          } else {\n            // Preserve legacy chrome stats only on legacy access of stats obj\n            origGetStats.apply(self, [\n              function(response) {\n                resolve(makeMapStats(fixChromeStats_(response),\n                    response.result()));\n              }, reject]);\n          }\n        }).then(successCallback, errorCallback);\n      };\n\n      return pc;\n    };\n    window.RTCPeerConnection.prototype = webkitRTCPeerConnection.prototype;\n\n    // wrap static methods. Currently just generateCertificate.\n    if (webkitRTCPeerConnection.generateCertificate) {\n      Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {\n        get: function() {\n          return webkitRTCPeerConnection.generateCertificate;\n        }\n      });\n    }\n\n    ['createOffer', 'createAnswer'].forEach(function(method) {\n      var nativeMethod = webkitRTCPeerConnection.prototype[method];\n      webkitRTCPeerConnection.prototype[method] = function() {\n        var self = this;\n        if (arguments.length < 1 || (arguments.length === 1 &&\n            typeof arguments[0] === 'object')) {\n          var opts = arguments.length === 1 ? arguments[0] : undefined;\n          return new Promise(function(resolve, reject) {\n            nativeMethod.apply(self, [resolve, reject, opts]);\n          });\n        }\n        return nativeMethod.apply(this, arguments);\n      };\n    });\n\n    // add promise support -- natively available in Chrome 51\n    if (browserDetails.version < 51) {\n      ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']\n          .forEach(function(method) {\n            var nativeMethod = webkitRTCPeerConnection.prototype[method];\n            webkitRTCPeerConnection.prototype[method] = function() {\n              var args = arguments;\n              var self = this;\n              var promise = new Promise(function(resolve, reject) {\n                nativeMethod.apply(self, [args[0], resolve, reject]);\n              });\n              if (args.length < 2) {\n                return promise;\n              }\n              return promise.then(function() {\n                args[1].apply(null, []);\n              },\n              function(err) {\n                if (args.length >= 3) {\n                  args[2].apply(null, [err]);\n                }\n              });\n            };\n          });\n    }\n\n    // shim implicit creation of RTCSessionDescription/RTCIceCandidate\n    ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']\n        .forEach(function(method) {\n          var nativeMethod = webkitRTCPeerConnection.prototype[method];\n          webkitRTCPeerConnection.prototype[method] = function() {\n            arguments[0] = new ((method === 'addIceCandidate') ?\n                RTCIceCandidate : RTCSessionDescription)(arguments[0]);\n            return nativeMethod.apply(this, arguments);\n          };\n        });\n\n    // support for addIceCandidate(null)\n    var nativeAddIceCandidate =\n        RTCPeerConnection.prototype.addIceCandidate;\n    RTCPeerConnection.prototype.addIceCandidate = function() {\n      if (arguments[0] === null) {\n        if (arguments[1]) {\n          arguments[1].apply(null);\n        }\n        return Promise.resolve();\n      }\n      return nativeAddIceCandidate.apply(this, arguments);\n    };\n  }\n};\n\n\n// Expose public methods.\nmodule.exports = {\n  shimMediaStream: chromeShim.shimMediaStream,\n  shimOnTrack: chromeShim.shimOnTrack,\n  shimSourceObject: chromeShim.shimSourceObject,\n  shimPeerConnection: chromeShim.shimPeerConnection,\n  shimGetUserMedia: require('./getusermedia')\n};\n","/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\nvar logging = require('../utils.js').log;\n\n// Expose public methods.\nmodule.exports = function() {\n  var constraintsToChrome_ = function(c) {\n    if (typeof c !== 'object' || c.mandatory || c.optional) {\n      return c;\n    }\n    var cc = {};\n    Object.keys(c).forEach(function(key) {\n      if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n        return;\n      }\n      var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};\n      if (r.exact !== undefined && typeof r.exact === 'number') {\n        r.min = r.max = r.exact;\n      }\n      var oldname_ = function(prefix, name) {\n        if (prefix) {\n          return prefix + name.charAt(0).toUpperCase() + name.slice(1);\n        }\n        return (name === 'deviceId') ? 'sourceId' : name;\n      };\n      if (r.ideal !== undefined) {\n        cc.optional = cc.optional || [];\n        var oc = {};\n        if (typeof r.ideal === 'number') {\n          oc[oldname_('min', key)] = r.ideal;\n          cc.optional.push(oc);\n          oc = {};\n          oc[oldname_('max', key)] = r.ideal;\n          cc.optional.push(oc);\n        } else {\n          oc[oldname_('', key)] = r.ideal;\n          cc.optional.push(oc);\n        }\n      }\n      if (r.exact !== undefined && typeof r.exact !== 'number') {\n        cc.mandatory = cc.mandatory || {};\n        cc.mandatory[oldname_('', key)] = r.exact;\n      } else {\n        ['min', 'max'].forEach(function(mix) {\n          if (r[mix] !== undefined) {\n            cc.mandatory = cc.mandatory || {};\n            cc.mandatory[oldname_(mix, key)] = r[mix];\n          }\n        });\n      }\n    });\n    if (c.advanced) {\n      cc.optional = (cc.optional || []).concat(c.advanced);\n    }\n    return cc;\n  };\n\n  var shimConstraints_ = function(constraints, func) {\n    constraints = JSON.parse(JSON.stringify(constraints));\n    if (constraints && constraints.audio) {\n      constraints.audio = constraintsToChrome_(constraints.audio);\n    }\n    if (constraints && typeof constraints.video === 'object') {\n      // Shim facingMode for mobile, where it defaults to \"user\".\n      var face = constraints.video.facingMode;\n      face = face && ((typeof face === 'object') ? face : {ideal: face});\n\n      if ((face && (face.exact === 'user' || face.exact === 'environment' ||\n                    face.ideal === 'user' || face.ideal === 'environment')) &&\n          !(navigator.mediaDevices.getSupportedConstraints &&\n            navigator.mediaDevices.getSupportedConstraints().facingMode)) {\n        delete constraints.video.facingMode;\n        if (face.exact === 'environment' || face.ideal === 'environment') {\n          // Look for \"back\" in label, or use last cam (typically back cam).\n          return navigator.mediaDevices.enumerateDevices()\n          .then(function(devices) {\n            devices = devices.filter(function(d) {\n              return d.kind === 'videoinput';\n            });\n            var back = devices.find(function(d) {\n              return d.label.toLowerCase().indexOf('back') !== -1;\n            }) || (devices.length && devices[devices.length - 1]);\n            if (back) {\n              constraints.video.deviceId = face.exact ? {exact: back.deviceId} :\n                                                        {ideal: back.deviceId};\n            }\n            constraints.video = constraintsToChrome_(constraints.video);\n            logging('chrome: ' + JSON.stringify(constraints));\n            return func(constraints);\n          });\n        }\n      }\n      constraints.video = constraintsToChrome_(constraints.video);\n    }\n    logging('chrome: ' + JSON.stringify(constraints));\n    return func(constraints);\n  };\n\n  var shimError_ = function(e) {\n    return {\n      name: {\n        PermissionDeniedError: 'NotAllowedError',\n        ConstraintNotSatisfiedError: 'OverconstrainedError'\n      }[e.name] || e.name,\n      message: e.message,\n      constraint: e.constraintName,\n      toString: function() {\n        return this.name + (this.message && ': ') + this.message;\n      }\n    };\n  };\n\n  var getUserMedia_ = function(constraints, onSuccess, onError) {\n    shimConstraints_(constraints, function(c) {\n      navigator.webkitGetUserMedia(c, onSuccess, function(e) {\n        onError(shimError_(e));\n      });\n    });\n  };\n\n  navigator.getUserMedia = getUserMedia_;\n\n  // Returns the result of getUserMedia as a Promise.\n  var getUserMediaPromise_ = function(constraints) {\n    return new Promise(function(resolve, reject) {\n      navigator.getUserMedia(constraints, resolve, reject);\n    });\n  };\n\n  if (!navigator.mediaDevices) {\n    navigator.mediaDevices = {\n      getUserMedia: getUserMediaPromise_,\n      enumerateDevices: function() {\n        return new Promise(function(resolve) {\n          var kinds = {audio: 'audioinput', video: 'videoinput'};\n          return MediaStreamTrack.getSources(function(devices) {\n            resolve(devices.map(function(device) {\n              return {label: device.label,\n                      kind: kinds[device.kind],\n                      deviceId: device.id,\n                      groupId: ''};\n            }));\n          });\n        });\n      }\n    };\n  }\n\n  // A shim for getUserMedia method on the mediaDevices object.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (!navigator.mediaDevices.getUserMedia) {\n    navigator.mediaDevices.getUserMedia = function(constraints) {\n      return getUserMediaPromise_(constraints);\n    };\n  } else {\n    // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia\n    // function which returns a Promise, it does not accept spec-style\n    // constraints.\n    var origGetUserMedia = navigator.mediaDevices.getUserMedia.\n        bind(navigator.mediaDevices);\n    navigator.mediaDevices.getUserMedia = function(cs) {\n      return shimConstraints_(cs, function(c) {\n        return origGetUserMedia(c).then(function(stream) {\n          if (c.audio && !stream.getAudioTracks().length ||\n              c.video && !stream.getVideoTracks().length) {\n            stream.getTracks().forEach(function(track) {\n              track.stop();\n            });\n            throw new DOMException('', 'NotFoundError');\n          }\n          return stream;\n        }, function(e) {\n          return Promise.reject(shimError_(e));\n        });\n      });\n    };\n  }\n\n  // Dummy devicechange event methods.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (typeof navigator.mediaDevices.addEventListener === 'undefined') {\n    navigator.mediaDevices.addEventListener = function() {\n      logging('Dummy mediaDevices.addEventListener called.');\n    };\n  }\n  if (typeof navigator.mediaDevices.removeEventListener === 'undefined') {\n    navigator.mediaDevices.removeEventListener = function() {\n      logging('Dummy mediaDevices.removeEventListener called.');\n    };\n  }\n};\n","/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar browserDetails = require('../utils').browserDetails;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n      // this adds an additional event listener to MediaStrackTrack that signals\n      // when a tracks enabled property was changed.\n      var origMSTEnabled = Object.getOwnPropertyDescriptor(\n          MediaStreamTrack.prototype, 'enabled');\n      Object.defineProperty(MediaStreamTrack.prototype, 'enabled', {\n        set: function(value) {\n          origMSTEnabled.set.call(this, value);\n          var ev = new Event('enabled');\n          ev.enabled = value;\n          this.dispatchEvent(ev);\n        }\n      });\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        // 3) turn: with ipv6 addresses\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return (url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1 &&\n                  url.indexOf('turn:[') === -1) ||\n                  (url.indexOf('stun:') === 0 &&\n                    browserDetails.version >= 14393);\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n      this._config = config;\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.getConfiguration = function() {\n      return this._config;\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      var clonedStream = stream.clone();\n      stream.getTracks().forEach(function(track, idx) {\n        var clonedTrack = clonedStream.getTracks()[idx];\n        track.addEventListener('enabled', function(event) {\n          clonedTrack.enabled = event.enabled;\n        });\n      });\n      this.localStreams.push(clonedStream);\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate) {\n                // number of channels is the highest common number of channels\n                rCodec.numChannels = Math.min(lCodec.numChannels,\n                    rCodec.numChannels);\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // determine common feedback mechanisms\n                rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n                  for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n                    if (lCodec.rtcpFeedback[j].type === fb.type &&\n                        lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n                      return true;\n                    }\n                  }\n                  return false;\n                });\n                // FIXME: also need to determine .parameters\n                //  see https://github.com/openpeer/ortc/issues/569\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        // remove RTX field in Edge 14942\n        if (transceiver.kind === 'video'\n            && transceiver.recvEncodingParameters) {\n          transceiver.recvEncodingParameters.forEach(function(p) {\n            delete p.rtx;\n          });\n        }\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected && !transceiver.isDatachannel) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            // Reject datachannels which are not implemented yet.\n            if (kind === 'application' && mline[2] === 'DTLS/SCTP') {\n              self.transceivers[sdpMLineIndex] = {\n                mid: mid,\n                isDatachannel: true\n              };\n              return;\n            }\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates', sessionpart).length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n\n              // filter RTX until additional stuff needed for RTX is implemented\n              // in adapter.js\n              localCapabilities.codecs = localCapabilities.codecs.filter(\n                  function(codec) {\n                    return codec.name !== 'rtx';\n                  });\n\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                var localTrack;\n                if (kind === 'audio') {\n                  localTrack = self.localStreams[0].getAudioTracks()[0];\n                } else if (kind === 'video') {\n                  localTrack = self.localStreams[0].getVideoTracks()[0];\n                }\n                if (localTrack) {\n                  rtpSender = new RTCRtpSender(localTrack,\n                      transports.dtlsTransport);\n                }\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        // filter RTX until additional stuff needed for RTX is implemented\n        // in adapter.js\n        localCapabilities.codecs = localCapabilities.codecs.filter(\n            function(codec) {\n              return codec.name !== 'rtx';\n            });\n        localCapabilities.codecs.forEach(function(codec) {\n          // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n          // by adding level-asymmetry-allowed=1\n          if (codec.name === 'H264' &&\n              codec.parameters['level-asymmetry-allowed'] === undefined) {\n            codec.parameters['level-asymmetry-allowed'] = '1';\n          }\n        });\n\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        if (transceiver.isDatachannel) {\n          sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n' +\n              'c=IN IP4 0.0.0.0\\r\\n' +\n              'a=mid:' + transceiver.mid + '\\r\\n';\n          return;\n        }\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: require('./getusermedia')\n};\n","/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\n// Expose public methods.\nmodule.exports = function() {\n  var shimError_ = function(e) {\n    return {\n      name: {PermissionDeniedError: 'NotAllowedError'}[e.name] || e.name,\n      message: e.message,\n      constraint: e.constraint,\n      toString: function() {\n        return this.name;\n      }\n    };\n  };\n\n  // getUserMedia error shim.\n  var origGetUserMedia = navigator.mediaDevices.getUserMedia.\n      bind(navigator.mediaDevices);\n  navigator.mediaDevices.getUserMedia = function(c) {\n    return origGetUserMedia(c).catch(function(e) {\n      return Promise.reject(shimError_(e));\n    });\n  };\n};\n","/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar browserDetails = require('../utils').browserDetails;\n\nvar firefoxShim = {\n  shimOnTrack: function() {\n    if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in\n        window.RTCPeerConnection.prototype)) {\n      Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {\n        get: function() {\n          return this._ontrack;\n        },\n        set: function(f) {\n          if (this._ontrack) {\n            this.removeEventListener('track', this._ontrack);\n            this.removeEventListener('addstream', this._ontrackpoly);\n          }\n          this.addEventListener('track', this._ontrack = f);\n          this.addEventListener('addstream', this._ontrackpoly = function(e) {\n            e.stream.getTracks().forEach(function(track) {\n              var event = new Event('track');\n              event.track = track;\n              event.receiver = {track: track};\n              event.streams = [e.stream];\n              this.dispatchEvent(event);\n            }.bind(this));\n          }.bind(this));\n        }\n      });\n    }\n  },\n\n  shimSourceObject: function() {\n    // Firefox has supported mozSrcObject since FF22, unprefixed in 42.\n    if (typeof window === 'object') {\n      if (window.HTMLMediaElement &&\n        !('srcObject' in window.HTMLMediaElement.prototype)) {\n        // Shim the srcObject property, once, when HTMLMediaElement is found.\n        Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', {\n          get: function() {\n            return this.mozSrcObject;\n          },\n          set: function(stream) {\n            this.mozSrcObject = stream;\n          }\n        });\n      }\n    }\n  },\n\n  shimPeerConnection: function() {\n    if (typeof window !== 'object' || !(window.RTCPeerConnection ||\n        window.mozRTCPeerConnection)) {\n      return; // probably media.peerconnection.enabled=false in about:config\n    }\n    // The RTCPeerConnection object.\n    if (!window.RTCPeerConnection) {\n      window.RTCPeerConnection = function(pcConfig, pcConstraints) {\n        if (browserDetails.version < 38) {\n          // .urls is not supported in FF < 38.\n          // create RTCIceServers with a single url.\n          if (pcConfig && pcConfig.iceServers) {\n            var newIceServers = [];\n            for (var i = 0; i < pcConfig.iceServers.length; i++) {\n              var server = pcConfig.iceServers[i];\n              if (server.hasOwnProperty('urls')) {\n                for (var j = 0; j < server.urls.length; j++) {\n                  var newServer = {\n                    url: server.urls[j]\n                  };\n                  if (server.urls[j].indexOf('turn') === 0) {\n                    newServer.username = server.username;\n                    newServer.credential = server.credential;\n                  }\n                  newIceServers.push(newServer);\n                }\n              } else {\n                newIceServers.push(pcConfig.iceServers[i]);\n              }\n            }\n            pcConfig.iceServers = newIceServers;\n          }\n        }\n        return new mozRTCPeerConnection(pcConfig, pcConstraints);\n      };\n      window.RTCPeerConnection.prototype = mozRTCPeerConnection.prototype;\n\n      // wrap static methods. Currently just generateCertificate.\n      if (mozRTCPeerConnection.generateCertificate) {\n        Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {\n          get: function() {\n            return mozRTCPeerConnection.generateCertificate;\n          }\n        });\n      }\n\n      window.RTCSessionDescription = mozRTCSessionDescription;\n      window.RTCIceCandidate = mozRTCIceCandidate;\n    }\n\n    // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.\n    ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']\n        .forEach(function(method) {\n          var nativeMethod = RTCPeerConnection.prototype[method];\n          RTCPeerConnection.prototype[method] = function() {\n            arguments[0] = new ((method === 'addIceCandidate') ?\n                RTCIceCandidate : RTCSessionDescription)(arguments[0]);\n            return nativeMethod.apply(this, arguments);\n          };\n        });\n\n    // support for addIceCandidate(null)\n    var nativeAddIceCandidate =\n        RTCPeerConnection.prototype.addIceCandidate;\n    RTCPeerConnection.prototype.addIceCandidate = function() {\n      if (arguments[0] === null) {\n        if (arguments[1]) {\n          arguments[1].apply(null);\n        }\n        return Promise.resolve();\n      }\n      return nativeAddIceCandidate.apply(this, arguments);\n    };\n\n    // shim getStats with maplike support\n    var makeMapStats = function(stats) {\n      var map = new Map();\n      Object.keys(stats).forEach(function(key) {\n        map.set(key, stats[key]);\n        map[key] = stats[key];\n      });\n      return map;\n    };\n\n    var nativeGetStats = RTCPeerConnection.prototype.getStats;\n    RTCPeerConnection.prototype.getStats = function(selector, onSucc, onErr) {\n      return nativeGetStats.apply(this, [selector || null])\n        .then(function(stats) {\n          return makeMapStats(stats);\n        })\n        .then(onSucc, onErr);\n    };\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimOnTrack: firefoxShim.shimOnTrack,\n  shimSourceObject: firefoxShim.shimSourceObject,\n  shimPeerConnection: firefoxShim.shimPeerConnection,\n  shimGetUserMedia: require('./getusermedia')\n};\n","/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar logging = require('../utils').log;\nvar browserDetails = require('../utils').browserDetails;\n\n// Expose public methods.\nmodule.exports = function() {\n  var shimError_ = function(e) {\n    return {\n      name: {\n        SecurityError: 'NotAllowedError',\n        PermissionDeniedError: 'NotAllowedError'\n      }[e.name] || e.name,\n      message: {\n        'The operation is insecure.': 'The request is not allowed by the ' +\n        'user agent or the platform in the current context.'\n      }[e.message] || e.message,\n      constraint: e.constraint,\n      toString: function() {\n        return this.name + (this.message && ': ') + this.message;\n      }\n    };\n  };\n\n  // getUserMedia constraints shim.\n  var getUserMedia_ = function(constraints, onSuccess, onError) {\n    var constraintsToFF37_ = function(c) {\n      if (typeof c !== 'object' || c.require) {\n        return c;\n      }\n      var require = [];\n      Object.keys(c).forEach(function(key) {\n        if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n          return;\n        }\n        var r = c[key] = (typeof c[key] === 'object') ?\n            c[key] : {ideal: c[key]};\n        if (r.min !== undefined ||\n            r.max !== undefined || r.exact !== undefined) {\n          require.push(key);\n        }\n        if (r.exact !== undefined) {\n          if (typeof r.exact === 'number') {\n            r. min = r.max = r.exact;\n          } else {\n            c[key] = r.exact;\n          }\n          delete r.exact;\n        }\n        if (r.ideal !== undefined) {\n          c.advanced = c.advanced || [];\n          var oc = {};\n          if (typeof r.ideal === 'number') {\n            oc[key] = {min: r.ideal, max: r.ideal};\n          } else {\n            oc[key] = r.ideal;\n          }\n          c.advanced.push(oc);\n          delete r.ideal;\n          if (!Object.keys(r).length) {\n            delete c[key];\n          }\n        }\n      });\n      if (require.length) {\n        c.require = require;\n      }\n      return c;\n    };\n    constraints = JSON.parse(JSON.stringify(constraints));\n    if (browserDetails.version < 38) {\n      logging('spec: ' + JSON.stringify(constraints));\n      if (constraints.audio) {\n        constraints.audio = constraintsToFF37_(constraints.audio);\n      }\n      if (constraints.video) {\n        constraints.video = constraintsToFF37_(constraints.video);\n      }\n      logging('ff37: ' + JSON.stringify(constraints));\n    }\n    return navigator.mozGetUserMedia(constraints, onSuccess, function(e) {\n      onError(shimError_(e));\n    });\n  };\n\n  // Returns the result of getUserMedia as a Promise.\n  var getUserMediaPromise_ = function(constraints) {\n    return new Promise(function(resolve, reject) {\n      getUserMedia_(constraints, resolve, reject);\n    });\n  };\n\n  // Shim for mediaDevices on older versions.\n  if (!navigator.mediaDevices) {\n    navigator.mediaDevices = {getUserMedia: getUserMediaPromise_,\n      addEventListener: function() { },\n      removeEventListener: function() { }\n    };\n  }\n  navigator.mediaDevices.enumerateDevices =\n      navigator.mediaDevices.enumerateDevices || function() {\n        return new Promise(function(resolve) {\n          var infos = [\n            {kind: 'audioinput', deviceId: 'default', label: '', groupId: ''},\n            {kind: 'videoinput', deviceId: 'default', label: '', groupId: ''}\n          ];\n          resolve(infos);\n        });\n      };\n\n  if (browserDetails.version < 41) {\n    // Work around http://bugzil.la/1169665\n    var orgEnumerateDevices =\n        navigator.mediaDevices.enumerateDevices.bind(navigator.mediaDevices);\n    navigator.mediaDevices.enumerateDevices = function() {\n      return orgEnumerateDevices().then(undefined, function(e) {\n        if (e.name === 'NotFoundError') {\n          return [];\n        }\n        throw e;\n      });\n    };\n  }\n  if (browserDetails.version < 49) {\n    var origGetUserMedia = navigator.mediaDevices.getUserMedia.\n        bind(navigator.mediaDevices);\n    navigator.mediaDevices.getUserMedia = function(c) {\n      return origGetUserMedia(c).then(function(stream) {\n        // Work around https://bugzil.la/802326\n        if (c.audio && !stream.getAudioTracks().length ||\n            c.video && !stream.getVideoTracks().length) {\n          stream.getTracks().forEach(function(track) {\n            track.stop();\n          });\n          throw new DOMException('The object can not be found here.',\n                                 'NotFoundError');\n        }\n        return stream;\n      }, function(e) {\n        return Promise.reject(shimError_(e));\n      });\n    };\n  }\n  navigator.getUserMedia = function(constraints, onSuccess, onError) {\n    if (browserDetails.version < 44) {\n      return getUserMedia_(constraints, onSuccess, onError);\n    }\n    // Replace Firefox 44+'s deprecation warning with unprefixed version.\n    console.warn('navigator.getUserMedia has been replaced by ' +\n                 'navigator.mediaDevices.getUserMedia');\n    navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);\n  };\n};\n","/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n'use strict';\nvar safariShim = {\n  // TODO: DrAlex, should be here, double check against LayoutTests\n  // shimOnTrack: function() { },\n\n  // TODO: once the back-end for the mac port is done, add.\n  // TODO: check for webkitGTK+\n  // shimPeerConnection: function() { },\n\n  shimGetUserMedia: function() {\n    navigator.getUserMedia = navigator.webkitGetUserMedia;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimGetUserMedia: safariShim.shimGetUserMedia\n  // TODO\n  // shimOnTrack: safariShim.shimOnTrack,\n  // shimPeerConnection: safariShim.shimPeerConnection\n};\n","/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar logDisabled_ = true;\n\n// Utility methods.\nvar utils = {\n  disableLog: function(bool) {\n    if (typeof bool !== 'boolean') {\n      return new Error('Argument type: ' + typeof bool +\n          '. Please use a boolean.');\n    }\n    logDisabled_ = bool;\n    return (bool) ? 'adapter.js logging disabled' :\n        'adapter.js logging enabled';\n  },\n\n  log: function() {\n    if (typeof window === 'object') {\n      if (logDisabled_) {\n        return;\n      }\n      if (typeof console !== 'undefined' && typeof console.log === 'function') {\n        console.log.apply(console, arguments);\n      }\n    }\n  },\n\n  /**\n   * Extract browser version out of the provided user agent string.\n   *\n   * @param {!string} uastring userAgent string.\n   * @param {!string} expr Regular expression used as match criteria.\n   * @param {!number} pos position in the version string to be returned.\n   * @return {!number} browser version.\n   */\n  extractVersion: function(uastring, expr, pos) {\n    var match = uastring.match(expr);\n    return match && match.length >= pos && parseInt(match[pos], 10);\n  },\n\n  /**\n   * Browser detector.\n   *\n   * @return {object} result containing browser and version\n   *     properties.\n   */\n  detectBrowser: function() {\n    // Returned result object.\n    var result = {};\n    result.browser = null;\n    result.version = null;\n\n    // Fail early if it's not a browser\n    if (typeof window === 'undefined' || !window.navigator) {\n      result.browser = 'Not a browser.';\n      return result;\n    }\n\n    // Firefox.\n    if (navigator.mozGetUserMedia) {\n      result.browser = 'firefox';\n      result.version = this.extractVersion(navigator.userAgent,\n          /Firefox\\/([0-9]+)\\./, 1);\n\n    // all webkit-based browsers\n    } else if (navigator.webkitGetUserMedia) {\n      // Chrome, Chromium, Webview, Opera, all use the chrome shim for now\n      if (window.webkitRTCPeerConnection) {\n        result.browser = 'chrome';\n        result.version = this.extractVersion(navigator.userAgent,\n          /Chrom(e|ium)\\/([0-9]+)\\./, 2);\n\n      // Safari or unknown webkit-based\n      // for the time being Safari has support for MediaStreams but not webRTC\n      } else {\n        // Safari UA substrings of interest for reference:\n        // - webkit version:           AppleWebKit/602.1.25 (also used in Op,Cr)\n        // - safari UI version:        Version/9.0.3 (unique to Safari)\n        // - safari UI webkit version: Safari/601.4.4 (also used in Op,Cr)\n        //\n        // if the webkit version and safari UI webkit versions are equals,\n        // ... this is a stable version.\n        //\n        // only the internal webkit version is important today to know if\n        // media streams are supported\n        //\n        if (navigator.userAgent.match(/Version\\/(\\d+).(\\d+)/)) {\n          result.browser = 'safari';\n          result.version = this.extractVersion(navigator.userAgent,\n            /AppleWebKit\\/([0-9]+)\\./, 1);\n\n        // unknown webkit-based browser\n        } else {\n          result.browser = 'Unsupported webkit-based browser ' +\n              'with GUM support but no WebRTC support.';\n          return result;\n        }\n      }\n\n    // Edge.\n    } else if (navigator.mediaDevices &&\n        navigator.userAgent.match(/Edge\\/(\\d+).(\\d+)$/)) {\n      result.browser = 'edge';\n      result.version = this.extractVersion(navigator.userAgent,\n          /Edge\\/(\\d+).(\\d+)$/, 2);\n\n    // Default fallthrough: not supported.\n    } else {\n      result.browser = 'Not a supported browser.';\n      return result;\n    }\n\n    return result;\n  }\n};\n\n// Export.\nmodule.exports = {\n  log: utils.log,\n  disableLog: utils.disableLog,\n  browserDetails: utils.detectBrowser(),\n  extractVersion: utils.extractVersion\n};\n","/**\n * @license\n * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.\n *\n * Licensed under the Amazon Software License (the \"License\"). You may not use this file except in compliance with the License. A copy of the License is located at\n *\n *   http://aws.amazon.com/asl/\n *\n * or in the \"LICENSE\" file accompanying this file. This file is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License.\n */\n/**\n * @license\n * License info for webrtc-adapter module assembled into js bundle:\n *\n * Copyright (c) 2014, The WebRTC project authors. All rights reserved.\n *\n * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:\n *\n * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.\n *\n * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.\n *\n * Neither the name of Google nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.\n *\n * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n */\n/**\n * @license\n * License info for sdp module assembled into js bundle:\n *\n * See https://www.npmjs.com/package/sdp\n */\nimport 'webrtc-adapter';\n/**\n * @license\n * License info for uuid module assembled into js bundle:\n *\n * The MIT License (MIT)\n *\n * Copyright (c) 2010-2016 Robert Kieffer and other contributors\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the \"Software\"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n */\nimport RtcSession from './rtc_session';\nimport {RTC_ERRORS} from './rtc_const';\n\nglobal.connect = global.connect || {};\nglobal.connect.RTCSession = RtcSession;\nglobal.connect.RTCErrors = RTC_ERRORS;\n\nglobal.lily = global.lily || {};\nglobal.lily.RTCSession = RtcSession;\nglobal.lily.RTCErrors = RTC_ERRORS;\n","/**\n * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.\n *\n * Licensed under the Amazon Software License (the \"License\"). You may not use this file except in compliance with the License. A copy of the License is located at\n *\n *   http://aws.amazon.com/asl/\n *\n * or in the \"LICENSE\" file accompanying this file. This file is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License.\n */\nexport const TimeoutExceptionName = 'Timeout';\nexport class Timeout extends Error {\n    constructor(msg) {\n        super(msg);\n        this.name = TimeoutExceptionName;\n    }\n}\n\nexport const GumTimeoutExceptionName = 'GumTimeout';\nexport class GumTimeout extends Timeout {\n    constructor(msg) {\n        super(msg);\n        this.name = GumTimeoutExceptionName;\n    }\n}\n\nexport const IllegalParametersExceptionName = 'IllegalParameters';\nexport class IllegalParameters extends Error {\n    constructor(msg) {\n        super(msg);\n        this.name = IllegalParametersExceptionName;\n    }\n}\n\nexport const IllegalStateExceptionName = 'IllegalState';\nexport class IllegalState extends Error {\n    constructor(msg) {\n        super(msg);\n        this.name = IllegalStateExceptionName;\n    }\n}\n\nexport const UnsupportedOperationExceptionName = 'UnsupportedOperation';\nexport class UnsupportedOperation extends Error {\n    constructor(msg) {\n        super(msg);\n        this.name = UnsupportedOperationExceptionName;\n    }\n}\n\nexport const BusyExceptionName = 'BusyException';\nexport class BusyException extends Error {\n    constructor(msg) {\n        super(msg);\n        this.name = BusyExceptionName;\n    }\n}\n\nexport const CallNotFoundExceptionName = 'CallNotFoundException';\nexport class CallNotFoundException extends Error {\n    constructor(msg) {\n        super(msg);\n        this.name = CallNotFoundExceptionName;\n    }\n}\n\nexport const UnknownSignalingErrorName = 'UnknownSignalingError';\nexport class UnknownSignalingError extends Error {\n    constructor() {\n        super();\n        this.name = UnknownSignalingErrorName;\n    }\n}\n","/**\n * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.\n *\n * Licensed under the Amazon Software License (the \"License\"). You may not use this file except in compliance with the License. A copy of the License is located at\n *\n *   http://aws.amazon.com/asl/\n *\n * or in the \"LICENSE\" file accompanying this file. This file is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License.\n */\n\n/**\n * Timeout waiting for server response to accept/hangup request.\n */\nexport const MAX_ACCEPT_BYE_DELAY_MS = 2000;\n/**\n * Timeout waiting for server response to invite.\n */\nexport const MAX_INVITE_DELAY_MS = 5000;\n/**\n *  Default timeout on opening WebSocket connection.\n */\nexport const DEFAULT_CONNECT_TIMEOUT_MS = 10000;\n/**\n * Default ice collection timeout in milliseconds.\n */\nexport const DEFAULT_ICE_TIMEOUT_MS = 8000;\n/**\n * Default gum timeout in milliseconds to be enforced during start of a call.\n */\nexport const DEFAULT_GUM_TIMEOUT_MS = 10000;\n\n/**\n * RTC error names.\n */\nexport const RTC_ERRORS = {\n     ICE_COLLECTION_TIMEOUT : 'Ice Collection Timeout',\n     USER_BUSY : 'User Busy',\n     SIGNALLING_CONNECTION_FAILURE : 'Signalling Connection Failure',\n     SIGNALLING_HANDSHAKE_FAILURE : 'Signalling Handshake Failure',\n     SET_REMOTE_DESCRIPTION_FAILURE : 'Set Remote Description Failure',\n     CREATE_OFFER_FAILURE : 'Create Offer Failure',\n     SET_LOCAL_DESCRIPTION_FAILURE : 'Set Local Description Failure',\n     INVALID_REMOTE_SDP : 'Invalid Remote SDP',\n     NO_REMOTE_ICE_CANDIDATE : 'No Remote ICE Candidate',\n     GUM_TIMEOUT_FAILURE : 'GUM Timeout Failure',\n     GUM_OTHER_FAILURE : 'GUM Other Failure',\n     CALL_NOT_FOUND: 'Call Not Found'\n};","/**\n * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.\n *\n * Licensed under the Amazon Software License (the \"License\"). You may not use this file except in compliance with the License. A copy of the License is located at\n *\n *   http://aws.amazon.com/asl/\n *\n * or in the \"LICENSE\" file accompanying this file. This file is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License.\n */\nimport { hitch, wrapLogger, closeStream, SdpOptions, transformSdp } from './utils';\nimport { SessionReport } from './session_report';\nimport { DEFAULT_ICE_TIMEOUT_MS, DEFAULT_GUM_TIMEOUT_MS, RTC_ERRORS } from './rtc_const';\nimport { UnsupportedOperation, IllegalParameters, IllegalState, GumTimeout, BusyExceptionName, CallNotFoundExceptionName } from './exceptions';\nimport RtcSignaling from './signaling';\nimport uuid from 'uuid/v4';\nimport {extractMediaStatsFromStats} from './rtp-stats';\nimport { parseCandidate } from 'sdp';\n\nexport class RTCSessionState {\n    /**\n     *\n     * @param {RtcSession} rtcSession\n     */\n    constructor(rtcSession) {\n        this._rtcSession = rtcSession;\n    }\n    onEnter() {\n    }\n    onExit() {\n    }\n    _isCurrentState() {\n        return this._rtcSession._state === this;\n    }\n    transit(nextState) {\n        if (this._isCurrentState()) {\n            this._rtcSession.transit(nextState);\n        }\n    }\n    get logger() {\n        return this._rtcSession._logger;\n    }\n    hangup() {\n        this.transit(new FailedState(this._rtcSession));\n    }\n    onIceCandidate(evt) {// eslint-disable-line no-unused-vars\n        //ignore candidate by default, ConnectSignalingAndIceCollectionState will override to collect candidates, but collecting process could last much longer than ConnectSignalingAndIceCollectionState\n        //we don't want to spam the console log\n    }\n    onRemoteHungup() {\n        throw new UnsupportedOperation('onRemoteHungup not implemented by ' + this.name);\n    }\n    get name() {\n        return \"RTCSessionState\";\n    }\n    onSignalingConnected() {\n        throw new UnsupportedOperation('onSignalingConnected not implemented by ' + this.name);\n    }\n    onSignalingHandshaked() {\n        throw new UnsupportedOperation('onSignalingHandshaked not implemented by ' + this.name);\n    }\n    onSignalingFailed(e) {// eslint-disable-line no-unused-vars\n        throw new UnsupportedOperation('onSignalingFailed not implemented by ' + this.name);\n    }\n    onIceStateChange(evt) {// eslint-disable-line no-unused-vars\n    }\n}\nexport class GrabLocalMediaState extends RTCSessionState {\n    onEnter() {\n        var self = this;\n        var startTime = Date.now();\n        if (self._rtcSession._userAudioStream) {\n            self.transit(new CreateOfferState(self._rtcSession));\n        } else {\n            var gumTimeoutPromise = new Promise((resolve, reject) => {\n                setTimeout(() => {\n                    reject(new GumTimeout('Local media has not been initialized yet.'));\n                }, self._rtcSession._gumTimeoutMillis);\n            });\n            var sessionGumPromise = self._gUM(self._rtcSession._buildMediaConstraints());\n\n            Promise.race([sessionGumPromise, gumTimeoutPromise])\n                .then(stream => {\n                    self._rtcSession._sessionReport.gumTimeMillis = Date.now() - startTime;\n                    self._rtcSession._onGumSuccess(self._rtcSession);\n                    self._rtcSession._localStream = stream;\n                    self._rtcSession._sessionReport.gumOtherFailure = false;\n                    self._rtcSession._sessionReport.gumTimeoutFailure = false;\n                    self.transit(new CreateOfferState(self._rtcSession));\n                }).catch(e => {\n                    self._rtcSession._sessionReport.gumTimeMillis = Date.now() - startTime;\n                    var errorReason;\n                    if (e instanceof GumTimeout) {\n                        errorReason = RTC_ERRORS.GUM_TIMEOUT_FAILURE;\n                        self._rtcSession._sessionReport.gumTimeoutFailure = true;\n                        self._rtcSession._sessionReport.gumOtherFailure = false;\n                    } else {\n                        errorReason = RTC_ERRORS.GUM_OTHER_FAILURE;\n                        self._rtcSession._sessionReport.gumOtherFailure = true;\n                        self._rtcSession._sessionReport.gumTimeoutFailure = false;\n                    }\n                    self.logger.error('Local media initialization failed', e);\n                    self._rtcSession._onGumError(self._rtcSession);\n                    self.transit(new FailedState(self._rtcSession, errorReason));\n                });\n        }\n    }\n    get name() {\n        return \"GrabLocalMediaState\";\n    }\n    _gUM(constraints) {\n        return navigator.mediaDevices.getUserMedia(constraints);\n    }\n}\nexport class CreateOfferState extends RTCSessionState {\n    onEnter() {\n        var self = this;\n        var stream = self._rtcSession._localStream;\n        self._rtcSession._pc.addStream(stream);\n        self._rtcSession._onLocalStreamAdded(self._rtcSession, stream);\n        self._rtcSession._pc.createOffer().then(rtcSessionDescription => {\n            self._rtcSession._localSessionDescription = rtcSessionDescription;\n            self._rtcSession._sessionReport.createOfferFailure = false;\n            self.transit(new SetLocalSessionDescriptionState(self._rtcSession));\n        }).catch(e => {\n            self.logger.error('CreateOffer failed', e);\n            self._rtcSession._sessionReport.createOfferFailure = true;\n            self.transit(new FailedState(self._rtcSession, RTC_ERRORS.CREATE_OFFER_FAILURE));\n        });\n    }\n    get name() {\n        return \"CreateOfferState\";\n    }\n}\nexport class SetLocalSessionDescriptionState extends RTCSessionState {\n    onEnter() {\n        var self = this;\n\n        // fix/modify SDP as needed here, before setLocalDescription\n        var localDescription = self._rtcSession._localSessionDescription;\n        var sdpOptions = new SdpOptions();\n        // Set audio codec.\n        if (self._rtcSession._forceAudioCodec) {\n            sdpOptions.forceCodec['audio'] = self._rtcSession._forceAudioCodec;\n        }\n        // Set video codec.\n        if (self._rtcSession._forceVideoCodec) {\n            sdpOptions.forceCodec['video'] = self._rtcSession._forceVideoCodec;\n        }\n        sdpOptions.enableOpusDtx = self._rtcSession._enableOpusDtx;\n\n        var transformedSdp = transformSdp(localDescription.sdp, sdpOptions);\n        localDescription.sdp = transformedSdp.sdp;\n\n        self.logger.info('LocalSD', self._rtcSession._localSessionDescription);\n        self._rtcSession._pc.setLocalDescription(self._rtcSession._localSessionDescription).then(() => {\n            var initializationTime = Date.now() - self._rtcSession._connectTimeStamp;\n            self._rtcSession._sessionReport.initializationTimeMillis = initializationTime;\n            self._rtcSession._onSessionInitialized(self._rtcSession, initializationTime);\n            self._rtcSession._sessionReport.setLocalDescriptionFailure = false;\n            self.transit(new ConnectSignalingAndIceCollectionState(self._rtcSession, transformedSdp.mLines));\n        }).catch(e => {\n            self.logger.error('SetLocalDescription failed', e);\n            self._rtcSession._sessionReport.setLocalDescriptionFailure = true;\n            self.transit(new FailedState(self._rtcSession, RTC_ERRORS.SET_LOCAL_DESCRIPTION_FAILURE));\n        });\n    }\n    get name() {\n        return \"SetLocalSessionDescriptionState\";\n    }\n}\n\n/**\n * Kick off signaling connection. Wait until signaling connects and ICE collection (which already started in previous state) completes.\n * ICE collection times out after user specified amount of time (default to DEFAULT_ICE_TIMEOUT_MS) in case user has complex network environment that blackholes STUN/TURN requests. In this case at least one candidate is required to move forward.\n * ICE collection could also wrap up before timeout if it's determined that RTP candidates from same TURN server have been collected for all m lines.\n */\nexport class ConnectSignalingAndIceCollectionState extends RTCSessionState {\n    /**\n     * Create ConnectSignalingAndIceCollectionState object.\n     * @param {RtcSession} rtcSession\n     * @param {number} mLines Number of m lines in SDP\n     */\n    constructor(rtcSession, mLines) {\n        super(rtcSession);\n        this._iceCandidates = [];\n        this._iceCandidateFoundationsMap = {};\n        this._mLines = mLines;\n    }\n    onEnter() {\n        var self = this;\n        self._startTime = Date.now();\n        setTimeout(() => {\n            if (self._isCurrentState() && !self._iceCompleted) {\n                self.logger.warn('ICE collection timed out');\n                self._reportIceCompleted(true);\n            }\n        }, self._rtcSession._iceTimeoutMillis);\n        self._rtcSession._createSignalingChannel().connect();\n    }\n    onSignalingConnected() {\n        this._rtcSession._signallingConnectTimestamp = Date.now();\n        this._rtcSession._sessionReport.signallingConnectTimeMillis = this._rtcSession._signallingConnectTimestamp - this._startTime;\n        this._signalingConnected = true;\n        this._rtcSession._onSignalingConnected(this._rtcSession);\n        this._rtcSession._sessionReport.signallingConnectionFailure = false;\n        this._checkAndTransit();\n    }\n    onSignalingFailed(e) {\n        this._rtcSession._sessionReport.signallingConnectTimeMillis = Date.now() - this._startTime;\n        this.logger.error('Failed connecting to signaling server', e);\n        this._rtcSession._sessionReport.signallingConnectionFailure = true;\n        this.transit(new FailedState(this._rtcSession, RTC_ERRORS.SIGNALLING_CONNECTION_FAILURE));\n    }\n    _createLocalCandidate(initDict) {\n        return new RTCIceCandidate(initDict);\n    }\n    onIceCandidate(evt) {\n        var candidate = evt.candidate;\n        this.logger.log('onicecandidate ' + JSON.stringify(candidate));\n        if (candidate) {\n            this._iceCandidates.push(this._createLocalCandidate(candidate));\n\n            if (!this._iceCompleted) {\n                this._checkCandidatesSufficient(candidate);\n            }\n\n        } else {\n            this._reportIceCompleted(false);\n        }\n    }\n    _checkCandidatesSufficient(candidate) {\n        //check if we collected sufficient candidates from single media server to start the call\n        var candidateObj = parseCandidate(candidate.candidate);\n        if (candidateObj.component != 1) {\n            return;\n        }\n        var candidateFoundation = candidateObj.foundation;\n        var candidateMLineIndex = candidate.sdpMLineIndex;\n        if (candidateFoundation && candidateMLineIndex >= 0 && candidateMLineIndex < this._mLines) {\n            var mIndexList = this._iceCandidateFoundationsMap[candidateFoundation] || [];\n            if (!mIndexList.includes(candidateMLineIndex)) {\n                mIndexList.push(candidateMLineIndex);\n            }\n            this._iceCandidateFoundationsMap[candidateFoundation] = mIndexList;\n\n            if (this._mLines == mIndexList.length) {\n                this._reportIceCompleted(false);\n            }\n        }\n    }\n    _reportIceCompleted(isTimeout) {\n        this._rtcSession._sessionReport.iceCollectionTimeMillis = Date.now() - this._startTime;\n        this._iceCompleted = true;\n        this._rtcSession._onIceCollectionComplete(this._rtcSession, isTimeout, this._iceCandidates.length);\n        if (this._iceCandidates.length > 0) {\n            this._rtcSession._sessionReport.iceCollectionFailure = false;\n            this._checkAndTransit();\n        } else {\n            this.logger.error('No ICE candidate');\n            this._rtcSession._sessionReport.iceCollectionFailure = true;\n            this.transit(new FailedState(this._rtcSession, RTC_ERRORS.ICE_COLLECTION_TIMEOUT));\n        }\n    }\n    _checkAndTransit() {\n        if (this._iceCompleted && this._signalingConnected) {\n            this.transit(new InviteAnswerState(this._rtcSession, this._iceCandidates));\n        } else if (!this._iceCompleted) {\n            this.logger.log('Pending ICE collection');\n        } else {//implies _signalingConnected == false\n            this.logger.log('Pending signaling connection');\n        }\n    }\n    get name() {\n        return \"ConnectSignalingAndIceCollectionState\";\n    }\n}\n\nexport class InviteAnswerState extends RTCSessionState {\n    constructor(rtcSession, iceCandidates) {\n        super(rtcSession);\n        this._iceCandidates = iceCandidates;\n    }\n    onEnter() {\n        var rtcSession = this._rtcSession;\n        rtcSession._onSignalingStarted(rtcSession);\n        rtcSession._signalingChannel.invite(rtcSession._localSessionDescription.sdp,\n            this._iceCandidates);\n    }\n    onSignalingAnswered(sdp, candidates) {\n        this._rtcSession._sessionReport.userBusyFailure = false;\n        this._rtcSession._sessionReport.handshakingFailure = false;\n        this.transit(new AcceptState(this._rtcSession, sdp, candidates));\n    }\n    onSignalingFailed(e) {\n        var reason;\n        if (e.name == BusyExceptionName) {\n            this.logger.error('User Busy, possibly multiple CCP windows open', e);\n            this._rtcSession._sessionReport.userBusyFailure = true;\n            this._rtcSession._sessionReport.handshakingFailure = true;\n            reason = RTC_ERRORS.USER_BUSY;\n        } else if (e.name == CallNotFoundExceptionName) {\n            this.logger.error('Call not found. One of the participant probably hungup.', e);\n            reason = RTC_ERRORS.CALL_NOT_FOUND;\n            this._rtcSession._sessionReport.handshakingFailure = true;\n        } else {\n            this.logger.error('Failed handshaking with signaling server', e);\n            this._rtcSession._sessionReport.userBusyFailure = false;\n            this._rtcSession._sessionReport.handshakingFailure = true;\n            reason = RTC_ERRORS.SIGNALLING_HANDSHAKE_FAILURE;\n        }\n        this.transit(new FailedState(this._rtcSession, reason));\n    }\n    get name() {\n        return \"InviteAnswerState\";\n    }\n}\nexport class AcceptState extends RTCSessionState {\n    constructor(rtcSession, sdp, candidates) {\n        super(rtcSession);\n        this._sdp = sdp;\n        this._candidates = candidates;\n    }\n    _createSessionDescription(initDict) {\n        return new RTCSessionDescription(initDict);\n    }\n    _createRemoteCandidate(initDict) {\n        return new RTCIceCandidate(initDict);\n    }\n    onEnter() {\n        var self = this;\n        var rtcSession = self._rtcSession;\n\n        if (!self._sdp) {\n            self.logger.error('Invalid remote SDP');\n            rtcSession._stopSession();\n            rtcSession._sessionReport.invalidRemoteSDPFailure = true;\n            self.transit(new FailedState(rtcSession, RTC_ERRORS.INVALID_REMOTE_SDP));\n            return;\n        } else if (!self._candidates || self._candidates.length < 1) {\n            self.logger.error('No remote ICE candidate');\n            rtcSession._stopSession();\n            rtcSession._sessionReport.noRemoteIceCandidateFailure = true;\n            self.transit(new FailedState(rtcSession, RTC_ERRORS.NO_REMOTE_ICE_CANDIDATE));\n            return;\n        }\n\n        rtcSession._sessionReport.invalidRemoteSDPFailure = false;\n        rtcSession._sessionReport.noRemoteIceCandidateFailure = false;\n        var setRemoteDescriptionPromise = rtcSession._pc.setRemoteDescription(self._createSessionDescription({\n            type: 'answer',\n            sdp: self._sdp\n        }));\n        setRemoteDescriptionPromise.catch(e => {\n            self.logger.error('SetRemoteDescription failed', e);\n        });\n        setRemoteDescriptionPromise.then(() => {\n            var remoteCandidatePromises = Promise.all(self._candidates.map(function (candidate) {\n                var remoteCandidate = self._createRemoteCandidate(candidate);\n                self.logger.info('Adding remote candidate', remoteCandidate);\n                return rtcSession._pc.addIceCandidate(remoteCandidate);\n            }));\n            remoteCandidatePromises.catch(reason => {\n                self.logger.warn('Error adding remote candidate', reason);\n            });\n            return remoteCandidatePromises;\n        }).then(() => {\n            rtcSession._sessionReport.setRemoteDescriptionFailure = false;\n            self._remoteDescriptionSet = true;\n            self._checkAndTransit();\n        }).catch(() => {\n            rtcSession._stopSession();\n            rtcSession._sessionReport.setRemoteDescriptionFailure = true;\n            self.transit(new FailedState(rtcSession, RTC_ERRORS.SET_REMOTE_DESCRIPTION_FAILURE));\n        });\n    }\n    onSignalingHandshaked() {\n        this._rtcSession._sessionReport.handshakingTimeMillis = Date.now() - this._rtcSession._signallingConnectTimestamp;\n        this._signalingHandshaked = true;\n        this._checkAndTransit();\n    }\n    _checkAndTransit() {\n        if (this._signalingHandshaked && this._remoteDescriptionSet) {\n            this.transit(new TalkingState(this._rtcSession));\n        } else if (!this._signalingHandshaked) {\n            this.logger.log('Pending handshaking');\n        } else {//implies _remoteDescriptionSet == false\n            this.logger.log('Pending setting remote description');\n        }\n    }\n    get name() {\n        return \"AcceptState\";\n    }\n}\nexport class TalkingState extends RTCSessionState {\n    onEnter() {\n        this._startTime = Date.now();\n        this._rtcSession._sessionReport.preTalkingTimeMillis = this._startTime - this._rtcSession._connectTimeStamp;\n        this._rtcSession._onSessionConnected(this._rtcSession);\n    }\n    onSignalingReconnected() {\n    }\n    onRemoteHungup() {\n        this._rtcSession._signalingChannel.hangup();\n        this.transit(new DisconnectedState(this._rtcSession));\n    }\n    hangup() {\n        this._rtcSession._signalingChannel.hangup();\n        this.transit(new DisconnectedState(this._rtcSession));\n    }\n    onIceStateChange(evt) {\n        if (evt.currentTarget.iceConnectionState == 'disconnected') {\n            this.logger.info('Lost ICE connection');\n            this._rtcSession._sessionReport.iceConnectionsLost += 1;\n        }\n    }\n    onExit() {\n        this._rtcSession._sessionReport.talkingTimeMillis = Date.now() - this._startTime;\n        this._rtcSession._detachMedia();\n        this._rtcSession._sessionReport.sessionEndTime = new Date();\n        this._rtcSession._onSessionCompleted(this._rtcSession);\n    }\n    get name() {\n        return \"TalkingState\";\n    }\n}\nexport class CleanUpState extends RTCSessionState {\n    onEnter() {\n        this._startTime = Date.now();\n        this._rtcSession._stopSession();\n        this._rtcSession._sessionReport.cleanupTimeMillis = Date.now() - this._startTime;\n        this._rtcSession._onSessionDestroyed(this._rtcSession, this._rtcSession._sessionReport);\n    }\n    get name() {\n        return \"CleanUpState\";\n    }\n    hangup() {\n        //do nothing, already at the end of lifecycle\n    }\n}\nexport class DisconnectedState extends CleanUpState {\n    get name() {\n        return \"DisconnectedState\";\n    }\n}\nexport class FailedState extends CleanUpState {\n    constructor(rtcSession, failureReason) {\n        super(rtcSession);\n        this._failureReason = failureReason;\n    }\n    onEnter() {\n        this._rtcSession._sessionReport.sessionEndTime = new Date();\n        this._rtcSession._onSessionFailed(this._rtcSession, this._failureReason);\n        super.onEnter();\n    }\n    get name() {\n        return \"FailedState\";\n    }\n}\n\nexport default class RtcSession {\n    /**\n     * Build an AmazonConnect RTC session.\n     * @param {*} signalingUri\n     * @param {*} iceServers Array of ice servers\n     * @param {*} contactToken A string representing the contact token (optional)\n     * @param {*} logger An object provides logging functions, such as console\n     * @param {*} contactId Must be UUID, uniquely identifies the session.\n     */\n    constructor(signalingUri, iceServers, contactToken, logger, contactId) {\n        if (typeof signalingUri !== 'string' || signalingUri.trim().length === 0) {\n            throw new IllegalParameters('signalingUri required');\n        }\n        if (!iceServers) {\n            throw new IllegalParameters('iceServers required');\n        }\n        if (typeof logger !== 'object') {\n            throw new IllegalParameters('logger required');\n        }\n        if (!contactId) {\n            this._callId = uuid();\n        } else {\n            this._callId = contactId;\n        }\n\n        this._sessionReport = new SessionReport();\n        this._signalingUri = signalingUri;\n        this._iceServers = iceServers;\n        this._contactToken = contactToken;\n        this._originalLogger = logger;\n        this._logger = wrapLogger(this._originalLogger, this._callId, 'SESSION');\n        this._iceTimeoutMillis = DEFAULT_ICE_TIMEOUT_MS;\n        this._gumTimeoutMillis = DEFAULT_GUM_TIMEOUT_MS;\n\n        this._enableAudio = true;\n        this._enableVideo = false;\n        this._facingMode = 'user';\n\n        /**\n         * user may provide the stream to the RtcSession directly to connect to the other end.\n         * user may also acquire the stream from the local device.\n         * This flag is used to track where the stream is acquired.\n         * If it's acquired from local devices, then we must close the stream when the session ends.\n         * If it's provided by user (rather than local camera/microphone), then we should leave it open when the\n         * session ends.\n         */\n        this._userProvidedStream = false;\n\n        this._onGumError =\n            this._onGumSuccess =\n            this._onLocalStreamAdded =\n            this._onSessionFailed =\n            this._onSessionInitialized =\n            this._onSignalingConnected =\n            this._onIceCollectionComplete =\n            this._onSignalingStarted =\n            this._onSessionConnected =\n            this._onRemoteStreamAdded =\n            this._onSessionCompleted =\n            this._onSessionDestroyed = () => {\n            };\n    }\n    get sessionReport() {\n        return this._sessionReport;\n    }\n    get callId() {\n        return this._callId;\n    }\n    /**\n     * getMediaStream returns the local stream, which may be acquired from local device or from user provided stream.\n     * Rather than getting a stream by calling getUserMedia (which gets a stream from local device such as camera),\n     * user could also provide the stream to the RtcSession directly to connect to the other end.\n     */\n    get mediaStream() {\n        return this._localStream;\n    }\n    get remoteVideoStream() {\n        return this._remoteVideoStream;\n    }\n    pauseLocalVideo() {\n        if(this._localStream) {\n            var videoTrack = this._localStream.getVideoTracks()[0];\n            if(videoTrack) {\n                videoTrack.enabled = false;\n            }\n        }\n    }\n    resumeLocalVideo() {\n        if(this._localStream) {\n            var videoTrack = this._localStream.getVideoTracks()[0];\n            if(videoTrack) {\n                videoTrack.enabled = true;\n            }\n        }\n    }\n    pauseRemoteVideo() {\n        if (this._remoteVideoStream) {\n            var videoTrack = this._remoteVideoStream.getTracks()[1];\n            if(videoTrack) {\n                videoTrack.enabled = false;\n            }\n        }\n    }\n    resumeRemoteVideo() {\n        if (this._remoteVideoStream) {\n            var videoTrack = this._remoteVideoStream.getTracks()[1];\n            if(videoTrack) {\n                videoTrack.enabled = true;\n            }\n        }\n    }\n    pauseLocalAudio() {\n        if (this._localStream) {\n            var audioTrack = this._localStream.getAudioTracks()[0];\n            if(audioTrack) {\n                audioTrack.enabled = false;\n            }\n        }\n    }\n    resumeLocalAudio() {\n        if (this._localStream) {\n            var audioTrack = this._localStream.getAudioTracks()[0];\n            if(audioTrack) {\n                audioTrack.enabled = true;\n            }\n        }\n    }\n    pauseRemoteAudio() {\n        if (this._remoteAudioStream) {\n            var audioTrack = this._remoteAudioStream.getTracks()[0];\n            if(audioTrack) {\n                audioTrack.enabled = false;\n            }\n        }\n    }\n    resumeRemoteAudio() {\n        if (this._remoteAudioStream) {\n            var audioTrack = this._remoteAudioStream.getTracks()[0];\n            if(audioTrack) {\n                audioTrack.enabled = true;\n            }\n        }\n    }\n    /**\n     * Callback when gUM succeeds.\n     * First param is RtcSession object.\n     */\n    set onGumSuccess(handler) {\n        this._onGumSuccess = handler;\n    }\n    /**\n     * Callback when gUM fails.\n     * First param is RtcSession object.\n     * Second param is the error.\n     */\n    set onGumError(handler) {\n        this._onGumError = handler;\n    }\n    /**\n     * Callback if failed initializing local resources\n     * First param is RtcSession object.\n     */\n    set onSessionFailed(handler) {\n        this._onSessionFailed = handler;\n    }\n    /**\n     * Callback after local user media stream is added to the session.\n     * First param is RtcSession object.\n     * Second param is media stream\n     */\n    set onLocalStreamAdded(handler) {\n        this._onLocalStreamAdded = handler;\n    }\n    /**\n     * Callback when all local resources are ready. Establishing signaling chanel and ICE collection happens at the same time after this.\n     * First param is RtcSession object.\n     */\n    set onSessionInitialized(handler) {\n        this._onSessionInitialized = handler;\n    }\n    /**\n     * Callback when signaling channel is established.\n     * RTC session will move forward only if onSignalingConnected and onIceCollectionComplete are both called.\n     *\n     * First param is RtcSession object.\n     */\n    set onSignalingConnected(handler) {\n        this._onSignalingConnected = handler;\n    }\n    /**\n     * Callback when ICE collection completes either because there is no more candidate or collection timed out.\n     * RTC session will move forward only if onSignalingConnected and onIceCollectionComplete are both called.\n     *\n     * First param is RtcSession object.\n     * Second param is boolean, TRUE - ICE collection timed out.\n     * Third param is number of candidates collected.\n     */\n    set onIceCollectionComplete(handler) {\n        this._onIceCollectionComplete = handler;\n    }\n    /**\n     * Callback when signaling channel is established and ICE collection completed with at least one candidate.\n     * First param is RtcSession object.\n     */\n    set onSignalingStarted(handler) {\n        this._onSignalingStarted = handler;\n    }\n    /**\n     * Callback when the call is established (handshaked and media stream should be flowing)\n     * First param is RtcSession object.\n     */\n    set onSessionConnected(handler) {\n        this._onSessionConnected = handler;\n    }\n    /**\n     * Callback after remote media stream is added to the session.\n     * This could be called multiple times with the same stream if multiple tracks are included in the same stream.\n     *\n     * First param is RtcSession object.\n     * Second param is media stream track.\n     */\n    set onRemoteStreamAdded(handler) {\n        this._onRemoteStreamAdded = handler;\n    }\n    /**\n     * Callback when the hangup is initiated (implies the call was successfully established).\n     * First param is RtcSession object.\n     */\n    set onSessionCompleted(handler) {\n        this._onSessionCompleted = handler;\n    }\n    /**\n     * Callback after session is cleaned up, no matter if the call was successfully established or not.\n     * First param is RtcSession object.\n     * Second param is SessionReport object.\n     */\n    set onSessionDestroyed(handler) {\n        this._onSessionDestroyed = handler;\n    }\n\n    set enableAudio(flag) {\n        this._enableAudio = flag;\n    }\n    set echoCancellation(flag) {\n        this._echoCancellation = flag;\n    }\n    set enableVideo(flag) {\n        this._enableVideo = flag;\n    }\n    set maxVideoFrameRate(frameRate) {\n        this._maxVideoFrameRate = frameRate;\n    }\n    set minVideoFrameRate(frameRate) {\n        this._minVideoFrameRate = frameRate;\n    }\n    set videoFrameRate(frameRate) {\n        this._videoFrameRate = frameRate;\n    }\n    set maxVideoWidth(width) {\n        this._maxVideoWidth = width;\n    }\n    set minVideoWidth(width) {\n        this._minVideoWidth = width;\n    }\n    set idealVideoWidth(width) {\n        this._idealVideoWidth = width;\n    }\n    set maxVideoHeight(height) {\n        this._maxVideoHeight = height;\n    }\n    set minVideoHeight(height) {\n        this._minVideoHeight = height;\n    }\n    set idealVideoHeight(height) {\n        this._idealVideoHeight = height;\n    }\n    set facingMode(mode) {\n        this._facingMode = mode;\n    }\n    /**\n     * Optional. RtcSession will grab input device if this is not specified.\n     * Please note: this RtcSession class only support single audio track and/or single video track.\n     */\n    set mediaStream(input) {\n        this._localStream = input;\n        this._userProvidedStream = true;\n    }\n    /**\n     * Needed, expect an audio element that can be used to play remote audio stream.\n     */\n    set remoteAudioElement(element) {\n        this._remoteAudioElement = element;\n    }\n    set remoteVideoElement(element) {\n        this._remoteVideoElement = element;\n    }\n    /**\n     * Override the default signaling connect time out.\n     */\n    set signalingConnectTimeout(ms) {\n        this._signalingConnectTimeout = ms;\n    }\n    /**\n     * Override the default ICE collection time limit.\n     */\n    set iceTimeoutMillis(timeoutMillis) {\n        this._iceTimeoutMillis = timeoutMillis;\n    }\n\n    /**\n     * Override the default GUM timeout time limit.\n     */\n    set gumTimeoutMillis(timeoutMillis) {\n        this._gumTimeoutMillis = timeoutMillis;\n    }\n\n    /**\n     * connect-rtc-js initiate the handshaking with all browser supported codec by default, Amazon Connect service will choose the codec according to its preference setting.\n     * Setting this attribute will force connect-rtc-js to only use specified codec.\n     * WARNING: Setting this to unsupported codec will cause the failure of handshaking.\n     * Supported audio codecs: opus.\n     */\n    set forceAudioCodec(audioCodec) {\n        this._forceAudioCodec = audioCodec;\n    }\n\n    /**\n     * connect-rtc-js initiate the handshaking with all browser supported codec by default, Amazon Connect service will choose the codec according to its preference setting.\n     * Setting this attribute will force connect-rtc-js to only use specified codec.\n     * WARNING: Setting this to unsupported codec will cause the failure of handshaking.\n     * Supported video codecs: VP8, VP9, H264.\n     */\n    set forceVideoCodec(videoCodec) {\n        this._forceVideoCodec = videoCodec;\n    }\n\n    /**\n     * connect-rtc-js disables OPUS DTX by default because it harms audio quality.\n     * @param flag boolean\n     */\n    set enableOpusDtx(flag) {\n        this._enableOpusDtx = flag;\n    }\n\n    transit(nextState) {\n        try {\n            this._logger.info((this._state ? this._state.name : 'null') + ' => ' + nextState.name);\n            if (this._state && this._state.onExit) {\n                this._state.onExit();\n            }\n        } finally {\n            this._state = nextState;\n            if (nextState.onEnter) {\n                try {\n                    nextState.onEnter();\n                } catch (e) {\n                    this._logger.warn(nextState.name + '#onEnter failed', e);\n                    throw e; // eslint-disable-line no-unsafe-finally\n                }\n            }\n        }\n    }\n\n    _createSignalingChannel() {\n        var signalingChannel = new RtcSignaling(this._callId, this._signalingUri, this._contactToken, this._originalLogger, this._signalingConnectTimeout);\n        signalingChannel.onConnected = hitch(this, this._signalingConnected);\n        signalingChannel.onAnswered = hitch(this, this._signalingAnswered);\n        signalingChannel.onHandshaked = hitch(this, this._signalingHandshaked);\n        signalingChannel.onRemoteHungup = hitch(this, this._signalingRemoteHungup);\n        signalingChannel.onFailed = hitch(this, this._signalingFailed);\n        signalingChannel.onDisconnected = hitch(this, this._signalingDisconnected);\n\n        this._signalingChannel = signalingChannel;\n\n        return signalingChannel;\n    }\n\n    _signalingConnected() {\n        this._state.onSignalingConnected();\n    }\n    _signalingAnswered(sdp, candidates) {\n        this._state.onSignalingAnswered(sdp, candidates);\n    }\n    _signalingHandshaked() {\n        this._state.onSignalingHandshaked();\n    }\n    _signalingRemoteHungup() {\n        this._state.onRemoteHungup();\n    }\n    _signalingFailed(e) {\n        this._state.onSignalingFailed(e);\n    }\n    _signalingDisconnected() {\n    }\n    _createPeerConnection(configuration) {\n        return new RTCPeerConnection(configuration);\n    }\n    connect() {\n        var self = this;\n        var now = new Date();\n        self._sessionReport.sessionStartTime = now;\n        self._connectTimeStamp = now.getTime();\n\n        self._pc = self._createPeerConnection({\n            iceServers: self._iceServers,\n            iceTransportPolicy: 'relay',\n            rtcpMuxPolicy: 'require',\n            bundlePolicy: 'balanced',\n            sdpSemantics: 'plan-b'\n        }, {\n            optional: [\n                {\n                    googDscp: true\n                }\n            ]\n        });\n\n        self._pc.ontrack = hitch(self, self._ontrack);\n        self._pc.onicecandidate = hitch(self, self._onIceCandidate);\n        self._pc.oniceconnectionstatechange = hitch(self, self._onIceStateChange);\n\n        self.transit(new GrabLocalMediaState(self));\n    }\n    accept() {\n        throw new UnsupportedOperation('accept does not go through signaling channel at this moment');\n    }\n    hangup() {\n        this._state.hangup();\n    }\n\n    /**\n     * Get a promise containing an object with two named lists of audio stats, one for each channel on each\n     * media type of 'video' and 'audio'.\n     * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value.\n     */\n    async getStats() {\n        var timestamp = new Date();\n\n        var impl = async (stream, streamType) => {\n            var tracks = [];\n\n            if (! stream) {\n                return [];\n            }\n\n            switch(streamType) {\n            case 'audio_input':\n            case 'audio_output':\n                tracks = stream.getAudioTracks();\n                break;\n            case 'video_input':\n            case 'video_output':\n                tracks = stream.getVideoTracks();\n                break;\n            default:\n                throw new Error('Unsupported stream type while trying to get stats: ' + streamType);\n            }\n\n            return await Promise.all(tracks.map(async (track) => {\n                var rawStats = await this._pc.getStats(track);\n                var digestedStats = extractMediaStatsFromStats(timestamp, rawStats, streamType);\n                if (! digestedStats) {\n                    throw new Error('Failed to extract MediaRtpStats from RTCStatsReport for stream type ' + streamType);\n                }\n                return digestedStats;\n            }));\n        };\n\n        if (this._pc && this._pc.signalingState === 'stable') {\n            var statsResult = {\n                audio: {\n                    input:  await impl(this._remoteAudioStream, 'audio_input'),\n                    output: await impl(this._localStream, 'audio_output')\n                },\n\n                video: {\n                    input:  await impl(this._remoteVideoStream, 'video_input'),\n                    output: await impl(this._localStream, 'video_output')\n                }\n            };\n\n            // For consistency's sake, coalesce rttMilliseconds into the output for audio and video.\n            var rttReducer = (acc, stats) => {\n                if (stats.rttMilliseconds !== null && (acc === null || stats.rttMilliseconds > acc)) {\n                    acc = stats.rttMilliseconds;\n                }\n                stats._rttMilliseconds = null;\n                return acc;\n            };\n\n            var audioInputRttMilliseconds = statsResult.audio.input.reduce(rttReducer, null);\n            var videoInputRttMilliseconds = statsResult.video.input.reduce(rttReducer, null);\n\n            if (audioInputRttMilliseconds !== null) {\n                statsResult.audio.output.forEach((stats) => { stats._rttMilliseconds = audioInputRttMilliseconds; }); \n            }\n\n            if (videoInputRttMilliseconds !== null) {\n                statsResult.video.output.forEach((stats) => { stats._rttMilliseconds = videoInputRttMilliseconds; }); \n            }\n\n            return statsResult;\n\n        } else {\n            return Promise.reject(new IllegalState());\n        }\n\n    }\n\n    /**\n     * Get a promise of MediaRtpStats object for remote audio (from Amazon Connect to client).\n     * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value.\n     * @deprecated in favor of getStats()\n     */\n    getRemoteAudioStats() {\n        return this.getStats().then(function(stats) {\n            if (stats.audio.output.length > 0) {\n                return stats.audio.output[0];\n            } else {\n                return Promise.reject(new IllegalState());\n            }\n        });\n    }\n\n    /**\n     * Get a promise of MediaRtpStats object for user audio (from client to Amazon Connect).\n     * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value.\n     * @deprecated in favor of getStats()\n     */\n    getUserAudioStats() {\n        return this.getStats().then(function(stats) {\n            if (stats.audio.input.length > 0) {\n                return stats.audio.input[0];\n            } else {\n                return Promise.reject(new IllegalState());\n            }\n        });\n    }\n\n    /**\n     * Get a promise of MediaRtpStats object for user video (from client to Amazon Connect).\n     * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value.\n     * @deprecated in favor of getStats()\n     */\n    getRemoteVideoStats() {\n        return this.getStats().then(function(stats) {\n            if (stats.video.output.length > 0) {\n                return stats.video.output[0];\n            } else {\n                return Promise.reject(new IllegalState());\n            }\n        });\n    }\n\n    /**\n     * Get a promise of MediaRtpStats object for user video (from client to Amazon Connect).\n     * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value.\n     * @deprecated in favor of getStats()\n     */\n    getUserVideoStats() {\n        return this.getStats().then(function(stats) {\n            if (stats.video.input.length > 0) {\n                return stats.video.input[0];\n            } else {\n                return Promise.reject(new IllegalState());\n            }\n        });\n   }\n\n    _onIceCandidate(evt) {\n        this._state.onIceCandidate(evt);\n    }\n\n    _onIceStateChange(evt) {\n        this._state.onIceStateChange(evt);\n    }\n\n    /**\n     * Attach remote media stream to web element.\n     */\n    _ontrack(evt) {\n        if (evt.streams.length > 1) {\n            this._logger.warn('Found more than 1 streams for ' + evt.track.kind + ' track ' + evt.track.id + ' : ' +\n                evt.streams.map(stream => stream.id).join(','));\n        }\n        if (evt.track.kind === 'video' && this._remoteVideoElement) {\n            this._remoteVideoElement.srcObject = evt.streams[0];\n            this._remoteVideoStream = evt.streams[0];\n        } else if (evt.track.kind === 'audio' && this._remoteAudioElement) {\n            this._remoteAudioElement.srcObject = evt.streams[0];\n            this._remoteAudioStream = evt.streams[0];\n        }\n        this._onRemoteStreamAdded(this, evt.streams[0]);\n    }\n    _detachMedia() {\n        if (this._remoteVideoElement) {\n            this._remoteVideoElement.srcObject = null;\n        }\n        if (this._remoteAudioElement) {\n            this._remoteAudioElement.srcObject = null;\n            this._remoteAudioStream = null;\n        }\n    }\n    _stopSession() {\n        try {\n            if (this._localStream && !this._userProvidedStream) {\n                closeStream(this._localStream);\n                this._localStream = null;\n                this._userProvidedStream = false;\n            }\n        } finally {\n            try {\n                if (this._pc) {\n                    this._pc.close();\n                }\n            } catch (e) {\n                // eat exception\n            } finally {\n                this._pc = null;\n            }\n        }\n    }\n\n    _buildMediaConstraints() {\n        var self = this;\n        var mediaConstraints = {};\n\n        if (self._enableAudio) {\n            var audioConstraints = {};\n            if (typeof self._echoCancellation !== 'undefined') {\n                audioConstraints.echoCancellation = !!self._echoCancellation;\n            }\n            if (Object.keys(audioConstraints).length > 0) {\n                mediaConstraints.audio = audioConstraints;\n            } else {\n                mediaConstraints.audio = true;\n            }\n        } else {\n            mediaConstraints.audio = false;\n        }\n\n        if (self._enableVideo) {\n            var videoConstraints = {};\n            var widthConstraints = {};\n            var heightConstraints = {};\n            var frameRateConstraints = {};\n\n            //build video width constraints\n            if (typeof self._idealVideoWidth !== 'undefined') {\n                widthConstraints.ideal = self._idealVideoWidth;\n            }\n            if (typeof self._maxVideoWidth !== 'undefined') {\n                widthConstraints.max = self._maxVideoWidth;\n            }\n            if (typeof self._minVideoWidth !== 'undefined') {\n                widthConstraints.min = self._minVideoWidth;\n            }\n            // build video height constraints\n            if (typeof self._idealVideoHeight !== 'undefined') {\n                heightConstraints.ideal = self._idealVideoHeight;\n            }\n            if (typeof self._maxVideoHeight !== 'undefined') {\n                heightConstraints.max = self._maxVideoHeight;\n            }\n            if (typeof self._minVideoHeight !== 'undefined') {\n                heightConstraints.min = self._minVideoHeight;\n            }\n            if(Object.keys(widthConstraints).length > 0 && Object.keys(heightConstraints).length > 0) {\n                videoConstraints.width = widthConstraints;\n                videoConstraints.height = heightConstraints;\n            }\n            // build frame rate constraints\n            if (typeof self._videoFrameRate !== 'undefined') {\n                frameRateConstraints.ideal = self._videoFrameRate;\n            }\n            if (typeof self._minVideoFrameRate !== 'undefined') {\n                frameRateConstraints.min = self._minVideoFrameRate;\n            }\n            if (typeof self._maxVideoFrameRate !== 'undefined') {\n                frameRateConstraints.max = self._maxVideoFrameRate;\n            }\n            if(Object.keys(frameRateConstraints).length > 0) {\n                videoConstraints.frameRate = frameRateConstraints;\n            }\n\n            // build facing mode constraints\n            if(self._facingMode !== 'user' && self._facingMode !== \"environment\") {\n                self._facingMode = 'user';\n            }\n            videoConstraints.facingMode = self._facingMode;\n\n            // set video constraints\n            if (Object.keys(videoConstraints).length > 0) {\n                mediaConstraints.video = videoConstraints;\n            } else {\n                mediaConstraints.video = true;\n            }\n        }\n\n        return mediaConstraints;\n    }\n}\n","/**\n* Extract rtp stats of specified stream from RTCStatsReport\n* Chrome reports all stream stats in statsReports whereas firefox reports only single stream stats in report\n* StreamType is passed only to pull right stream stats audio_input or audio_output.\n*/\n\nimport { is_defined, when_defined } from './utils';\nexport function extractMediaStatsFromStats(timestamp, stats, streamType) {\n    var extractedStats = null;\n\n    for (var key in stats) {\n        var statsReport = stats[key];\n        if (statsReport) {\n            if (statsReport.type === 'ssrc') {\n                //chrome, opera case. chrome reports stats for all streams, not just the stream passed in.\n                if (is_defined(statsReport.packetsSent) && statsReport.mediaType == 'audio' && streamType === 'audio_input') {\n                    extractedStats = {\n                        timestamp:          timestamp,\n                        packetsCount:       statsReport.packetsSent,\n                        bytesSent:          statsReport.bytesSent,\n                        audioLevel:         when_defined(statsReport.audioInputLevel),\n                        packetsLost:        is_defined(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0,\n                        procMilliseconds:   is_defined(statsReport.googCurrentDelayMs),\n                        rttMilliseconds:    when_defined(statsReport.googRtt)\n                    };\n\n                } else if (is_defined(statsReport.packetsReceived) && statsReport.mediaType == 'audio' && streamType === 'audio_output') {\n                    extractedStats = {\n                        timestamp:          timestamp,\n                        packetsCount:       statsReport.packetsReceived,\n                        bytesReceived:      statsReport.bytesReceived,\n                        audioLevel:         when_defined(statsReport.audioOutputLevel),\n                        packetsLost:        is_defined(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0,\n                        procMilliseconds:   is_defined(statsReport.googCurrentDelayMs),\n                        jbMilliseconds:     when_defined(statsReport.googJitterBufferMs)\n                    };\n\n                } else if (is_defined(statsReport.packetsSent) && statsReport.mediaType == 'video' && streamType === 'video_input') {\n                    extractedStats = {\n                        timestamp:          timestamp,\n                        packetsCount:       statsReport.packetsSent,\n                        bytesSent:          statsReport.bytesSent,\n                        packetsLost:        is_defined(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0,\n                        rttMilliseconds:    when_defined(statsReport.googRtt),\n                        procMilliseconds:   is_defined(statsReport.googCurrentDelayMs),\n                        frameRateSent:      when_defined(statsReport.googFrameRateSent),\n                    };\n\n                } else if (typeof statsReport.packetsReceived !== 'undefined' && statsReport.mediaType == 'video' && streamType === 'video_output') {\n                    extractedStats = {\n                        timestamp:          timestamp,\n                        packetsCount:       statsReport.packetsSent,\n                        bytesReceived:      statsReport.bytesReceived,\n                        packetsLost:        is_defined(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0,\n                        frameRateReceived:  when_defined(statsReport.googFrameRateReceived),\n                        procMilliseconds:   is_defined(statsReport.googCurrentDelayMs),\n                        jbMilliseconds:     when_defined(statsReport.googJitterBufferMs)\n                    };\n\n                }\n            } else if (statsReport.type === 'inboundrtp') {\n                // Firefox case. Firefox reports packetsLost parameter only in inboundrtp type, and doesn't report in outboundrtp type.\n                // So we only pull from inboundrtp. Firefox reports only stats for the stream passed in.\n                if (is_defined(statsReport.packetsLost) && is_defined(statsReport.packetsReceived)) {\n                    extractedStats = {\n                        packetsLost:        statsReport.packetsLost,\n                        packetsCount:       statsReport.packetsReceived,\n                        audioLevel:         when_defined(statsReport.audioInputLevel),\n                        rttMilliseconds:    streamType === 'audio_ouptut' || streamType === 'video_output' ? when_defined(statsReport.roundTripTime) : null,\n                        jbMilliseconds:     streamType === 'audio_output' || streamType === 'video_output' ? when_defined(statsReport.jitter, 0) * 1000 : null\n                    };\n                }\n            }\n        }\n    }\n\n    return extractedStats ? new MediaRtpStats(extractedStats, statsReport.type, streamType) : null;\n}\n\n/**\n* Basic RTP statistics object, represents statistics of an audio or video stream.\n*/\nclass MediaRtpStats {\n    constructor(paramsIn, statsReportType, streamType) {\n        var params = paramsIn || {};\n\n        this._timestamp         = params.timestamp || new Date().getTime();\n        this._packetsLost       = when_defined(params.packetsLost);\n        this._packetsCount      = when_defined(params.packetsCount);\n        this._audioLevel        = when_defined(params.audioLevel);\n        this._rttMilliseconds   = when_defined(params.rttMilliseconds);\n        this._jbMilliseconds    = when_defined(params.jbMilliseconds);\n        this._bytesSent         = when_defined(params.bytesSent);\n        this._bytesReceived     = when_defined(params.bytesReceived);\n        this._framesEncoded     = when_defined(params.framesEncoded);\n        this._framesDecoded     = when_defined(params.framesDecoded);\n        this._frameRateSent     = when_defined(params.frameRateSent);\n        this._frameRateReceived = when_defined(params.frameRateReceived);\n        this._statsReportType   = statsReportType || params._statsReportType || \"unknown\";\n        this._streamType        = streamType || params.streamType || \"unknown\";\n    }\n\n    /** {number} number of packets sent to the channel */\n    get packetsCount() {\n        return this._packetsCount;\n    }\n    /** {number} number of packets lost after travelling through the channel */\n    get packetsLost() {\n        return this._packetsLost;\n    }\n    /** {number} number of packets lost after travelling through the channel */\n    get packetLossPercentage() {\n        return this._packetsCount > 0 ? this._packetsLost / this._packetsCount : 0;\n    }\n    /** Audio volume level\n    * Currently firefox doesn't provide audio level in rtp stats.\n    */\n    get audioLevel() {\n        return this._audioLevel;\n    }\n    /** Timestamp when stats are collected. */\n    get timestamp() {\n        return this._timestamp;\n    }\n    /** {number} Round trip time calculated with RTCP reports */\n    get rttMilliseconds() {\n        return this._rttMilliseconds;\n    }\n    /** {number} Browser/client side jitter buffer length */\n    get jbMilliseconds() {\n        return this._jbMilliseconds;\n    }\n    /** {number} number of bytes sent to the channel*/\n    get bytesSent() {\n        return this._bytesSent;\n    }\n    /** {number} number of bytes received from the channel*/\n    get bytesReceived() {\n        return this._bytesReceived;\n    }\n    /** {number} number of video frames encoded*/\n    get framesEncoded() {\n        return this._framesEncoded;\n    }\n    /** {number} number of video frames decoded*/\n    get framesDecoded() {\n        return this._framesDecoded;\n    }\n    /** {number} frames per second sent to the channel*/\n    get frameRateSent() {\n        return this._frameRateSent;\n    }\n    /** {number} frames per second received from the channel*/\n    get frameRateReceived() {\n        return this._frameRateReceived;\n    }\n    /** {string} the type of the stats report */\n    get statsReportType() {\n        return this._statsReportType;\n    }\n    /** {string} the type of the stream */\n    get streamType() {\n        return this._streamType;\n    }\n}\n","/**\n * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.\n *\n * Licensed under the Amazon Software License (the \"License\"). You may not use this file except in compliance with the License. A copy of the License is located at\n *\n *   http://aws.amazon.com/asl/\n *\n * or in the \"LICENSE\" file accompanying this file. This file is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License.\n */\n\nexport class SessionReport {\n    /**\n     * @class Prototype for tracking various RTC session report\n     * @constructs\n     */\n    constructor() {\n        this._sessionStartTime = null;\n        this._sessionEndTime = null;\n        this._gumTimeMillis = null;\n        this._initializationTimeMillis = null;\n        this._iceCollectionTimeMillis = null;\n        this._signallingConnectTimeMillis = null;\n        this._handshakingTimeMillis = null;\n        this._preTalkingTimeMillis = null;\n        this._talkingTimeMillis = null;\n        this._iceConnectionsLost = 0;\n        this._cleanupTimeMillis = null;\n        this._iceCollectionFailure = null;\n        this._signallingConnectionFailure = null;\n        this._handshakingFailure = null;\n        this._gumOtherFailure = null;\n        this._gumTimeoutFailure = null;\n        this._createOfferFailure = null;\n        this._setLocalDescriptionFailure = null;\n        this._userBusyFailure = null;\n        this._invalidRemoteSDPFailure = null;\n        this._noRemoteIceCandidateFailure = null;\n        this._setRemoteDescriptionFailure = null;\n        this._streamStats = [];\n    }\n    /**\n     *Timestamp when RTCSession started.\n     */\n    get sessionStartTime() {\n        return this._sessionStartTime;\n    }\n    /**\n     * Timestamp when RTCSession ended.\n     */\n    get sessionEndTime() {\n        return this._sessionEndTime;\n    }\n    /**\n     * Time taken for grabbing user microphone at the time of connecting RTCSession.\n     */\n    get gumTimeMillis() {\n        return this._gumTimeMillis;\n    }\n    /**\n     * Time taken for session initialization in millis. Includes time spent in GrabLocalMedia, SetLocalSDP states.\n     */\n    get initializationTimeMillis() {\n        return this._initializationTimeMillis;\n    }\n    /**\n     * Time spent on ICECollection in millis.\n     */\n    get iceCollectionTimeMillis() {\n        return this._iceCollectionTimeMillis;\n    }\n    /**\n     * Time taken for connecting the signalling in millis.\n     */\n    get signallingConnectTimeMillis() {\n        return this._signallingConnectTimeMillis;\n    }\n    /**\n     * Times spent from RTCSession connection until entering Talking state in millis.\n     */\n    get preTalkingTimeMillis() {\n        return this._preTalkingTimeMillis;\n    }\n    /**\n     *  Times spent in completing handshaking process of the RTCSession in millis.\n     */\n    get handshakingTimeMillis() {\n        return this._handshakingTimeMillis;\n    }\n    /**\n     *  Times spent in Talking state in millis.\n     */\n    get talkingTimeMillis() {\n        return this._talkingTimeMillis;\n    }\n    /**\n     * How many times the RTCSession has lost ICE connection in talking state.\n     */\n    get iceConnectionsLost() {\n        return this._iceConnectionsLost;\n    }\n    /**\n     * Times spent in Cleanup state in millis\n     */\n    get cleanupTimeMillis() {\n        return this._cleanupTimeMillis;\n    }\n    /**\n     * Tells if the RTCSession fails in ICECollection.\n     */\n    get iceCollectionFailure() {\n        return this._iceCollectionFailure;\n    }\n    /**\n     * Tells if the RTCSession failed in signalling connect stage.\n     */\n    get signallingConnectionFailure() {\n        return this._signallingConnectionFailure;\n    }\n    /**\n     * Handshaking failure of the RTCSession\n     */\n    get handshakingFailure() {\n        return this._handshakingFailure;\n    }\n    /**\n     * Gum failed due to timeout at the time of new RTCSession connection\n     */\n    get gumTimeoutFailure() {\n        return this._gumTimeoutFailure;\n    }\n    /**\n     * Gum failed due to other reasons (other than Timeout)\n     */\n    get gumOtherFailure() {\n        return this._gumOtherFailure;\n    }\n    /**\n     * RTC Session failed in create Offer state.\n     */\n    get createOfferFailure() {\n        return this._createOfferFailure;\n    }\n    /**\n     * Tells if setLocalDescription failed for the RTC Session.\n     */\n    get setLocalDescriptionFailure() {\n        return this._setLocalDescriptionFailure;\n    }\n    /**\n     * Tells if handshaking failed due to user busy case,\n     * happens when multiple softphone calls are initiated at same time.\n     */\n    get userBusyFailure() {\n        return this._userBusyFailure;\n    }\n    /**\n     * Tells it remote SDP is invalid.\n     */\n    get invalidRemoteSDPFailure() {\n        return this._invalidRemoteSDPFailure;\n    }\n    /**\n     * Tells if the setRemoteDescription failed for the RTC Session.\n     */\n    get setRemoteDescriptionFailure() {\n        return this._setRemoteDescriptionFailure;\n    }\n    /**\n     * A failure case when there is no RemoteIceCandidate.\n     */\n    get noRemoteIceCandidateFailure() {\n        return this._noRemoteIceCandidateFailure;\n    }\n    /**\n     * Statistics for each stream(audio-in, audio-out, video-in, video-out) of the RTCSession.\n     */\n    get streamStats() {\n        return this._streamStats;\n    }\n\n    set sessionStartTime(value) {\n        this._sessionStartTime = value;\n    }\n    set sessionEndTime(value) {\n        this._sessionEndTime = value;\n    }\n    set gumTimeMillis(value) {\n        this._gumTimeMillis = value;\n    }\n    set initializationTimeMillis(value) {\n        this._initializationTimeMillis = value;\n    }\n    set iceCollectionTimeMillis(value) {\n        this._iceCollectionTimeMillis = value;\n    }\n    set signallingConnectTimeMillis(value) {\n        this._signallingConnectTimeMillis = value;\n    }\n    set preTalkingTimeMillis(value) {\n        this._preTalkingTimeMillis = value;\n    }\n    set handshakingTimeMillis(value) {\n        this._handshakingTimeMillis = value;\n    }\n    set talkingTimeMillis(value) {\n        this._talkingTimeMillis = value;\n    }\n    set iceConnectionsLost(value) {\n        this._iceConnectionsLost = value;\n    }\n    set cleanupTimeMillis(value) {\n        this._cleanupTimeMillis = value;\n    }\n    set iceCollectionFailure(value) {\n        this._iceCollectionFailure = value;\n    }\n    set signallingConnectionFailure(value) {\n        this._signallingConnectionFailure = value;\n    }\n    set handshakingFailure(value) {\n        this._handshakingFailure = value;\n    }\n    set gumTimeoutFailure(value) {\n        this._gumTimeoutFailure = value;\n    }\n    set gumOtherFailure(value) {\n        this._gumOtherFailure = value;\n    }\n    set createOfferFailure(value) {\n        this._createOfferFailure = value;\n    }\n    set setLocalDescriptionFailure(value) {\n        this._setLocalDescriptionFailure = value;\n    }\n    set userBusyFailure(value) {\n        this._userBusyFailure = value;\n    }\n    set invalidRemoteSDPFailure(value) {\n        this._invalidRemoteSDPFailure = value;\n    }\n    set noRemoteIceCandidateFailure(value) {\n        this._noRemoteIceCandidateFailure = value;\n    }\n    set setRemoteDescriptionFailure(value) {\n        this._setRemoteDescriptionFailure = value;\n    }\n    set streamStats(value) {\n        this._streamStats = value;\n    }\n}","/**\n * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.\n *\n * Licensed under the Amazon Software License (the \"License\"). You may not use this file except in compliance with the License. A copy of the License is located at\n *\n *   http://aws.amazon.com/asl/\n *\n * or in the \"LICENSE\" file accompanying this file. This file is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License.\n */\n\nimport { hitch, wrapLogger } from './utils';\nimport { MAX_INVITE_DELAY_MS, MAX_ACCEPT_BYE_DELAY_MS, DEFAULT_CONNECT_TIMEOUT_MS } from './rtc_const';\nimport { UnsupportedOperation, Timeout, BusyException, CallNotFoundException, UnknownSignalingError } from './exceptions';\n\nvar reqIdSeq = 1;\n\nvar CONNECT_MAX_RETRIES = 3;\n\n/**\n * Abstract signaling state class.\n */\nexport class SignalingState {\n    /**\n     * @param {AmznRtcSignaling} signaling Signaling object.\n     */\n    constructor(signaling) {\n        this._signaling = signaling;\n        this._createTime = new Date().getTime();\n    }\n    setStateTimeout(timeoutMs) {\n        setTimeout(hitch(this, this._onTimeoutChecked), timeoutMs);\n    }\n    get isCurrentState() {\n        return this === this._signaling.state;\n    }\n    onEnter() {\n    }\n    _onTimeoutChecked() {\n        if (this.isCurrentState) {\n            this.onTimeout();\n        }\n    }\n    onTimeout() {\n        throw new UnsupportedOperation();\n    }\n    transit(newState) {\n        this._signaling.transit(newState);\n    }\n    onExit() {\n    }\n    onOpen() {\n        throw new UnsupportedOperation('onOpen not supported by ' + this.name);\n    }\n    onError() {\n        this.channelDown();\n    }\n    onClose() {\n        this.channelDown();\n    }\n    channelDown() {\n        throw new UnsupportedOperation('channelDown not supported by ' + this.name);\n    }\n    onRpcMsg(rpcMsg) {// eslint-disable-line no-unused-vars\n        throw new UnsupportedOperation('onRpcMsg not supported by ' + this.name);\n    }\n    invite(sdp, iceCandidates) {// eslint-disable-line no-unused-vars\n        throw new UnsupportedOperation('invite not supported by ' + this.name);\n    }\n    accept() {\n        throw new UnsupportedOperation('accept not supported by ' + this.name);\n    }\n    hangup() {\n        throw new UnsupportedOperation('hangup not supported by ' + this.name);\n    }\n    get name() {\n        return \"SignalingState\";\n    }\n    get logger() {\n        return this._signaling._logger;\n    }\n}\nexport class FailOnTimeoutState extends SignalingState {\n    constructor(signaling, timeoutMs) {\n        super(signaling);\n        this._timeoutMs = timeoutMs;\n    }\n    onEnter() {\n        this.setStateTimeout(this._timeoutMs);\n    }\n    onTimeout() {\n        this.transit(new FailedState(this._signaling, new Timeout()));\n    }\n    get name() {\n        return \"FailOnTimeoutState\";\n    }\n}\nexport class PendingConnectState extends FailOnTimeoutState {\n    constructor(signaling, timeoutMs, initialStartTimeIn, retriesIn) {\n        super(signaling, timeoutMs);\n        this._initialStartTime = initialStartTimeIn || new Date().getTime();\n        this._retries = retriesIn || 0;\n    }\n    onOpen() {\n        this.transit(new PendingInviteState(this._signaling));\n    }\n    channelDown() {\n        var now = new Date().getTime();\n        var untilTimeoutMs = (this._initialStartTime + this._timeoutMs) - now;\n        if (untilTimeoutMs > 0 && ++this._retries < CONNECT_MAX_RETRIES) {\n            this._signaling._connect();\n            this.transit(new PendingConnectState(this._signaling, untilTimeoutMs, this._initialStartTime, this._retries));\n        } else {\n            this.transit(new FailedState(this._signaling, new Error('channelDown')));\n        }\n    }\n    get name() {\n        return \"PendingConnectState\";\n    }\n}\nexport class PendingInviteState extends SignalingState {\n    onEnter() {\n        var self = this;\n        new Promise(function notifyConnected(resolve) {\n            self._signaling._connectedHandler();\n            resolve();\n        });\n    }\n    invite(sdp, iceCandidates) {\n        var self = this;\n        var inviteId = reqIdSeq++;\n\n        var inviteParams = {\n            sdp: sdp,\n            candidates: iceCandidates\n        };\n        self.logger.log('Sending SDP', sdp);\n        self._signaling._wss.send(JSON.stringify({\n            jsonrpc: '2.0',\n            method: 'invite',\n            params: inviteParams,\n            id: inviteId\n        }));\n        self.transit(new PendingAnswerState(self._signaling, inviteId));\n    }\n    channelDown() {\n        this.transit(new FailedState(this._signaling));\n    }\n    get name() {\n        return \"PendingInviteState\";\n    }\n}\nexport class PendingAnswerState extends FailOnTimeoutState {\n    constructor(signaling, inviteId) {\n        super(signaling, MAX_INVITE_DELAY_MS);\n        this._inviteId = inviteId;\n    }\n    onRpcMsg(msg) {\n        var self = this;\n        if (msg.id === this._inviteId) {\n            if (msg.error || !msg.result) {\n                this.transit(new FailedState(this._signaling, self.translateInviteError(msg)));\n            } else {\n                new Promise(function notifyAnswered(resolve) {\n                    self.logger.log('Received SDP', msg.result.sdp);\n                    self._signaling._answeredHandler(msg.result.sdp, msg.result.candidates);\n                    resolve();\n                });\n                this.transit(new PendingAcceptState(this._signaling, this._signaling._autoAnswer));\n            }\n        }\n    }\n    translateInviteError(msg) {\n        if (msg.error && msg.error.code == 486) {\n            return new BusyException(msg.error.message);\n        } else if (msg.error && msg.error.code == 404) {\n            return new CallNotFoundException(msg.error.message);\n        } else {\n            return new UnknownSignalingError();\n        }\n    }\n\n    get name() {\n        return \"PendingAnswerState\";\n    }\n}\nexport class PendingAcceptState extends SignalingState {\n    constructor(signaling, autoAnswer) {\n        super(signaling);\n        this._autoAnswer = autoAnswer;\n    }\n    onEnter() {\n        if (this._autoAnswer) {\n            this.accept();\n        }\n    }\n    accept() {\n        var acceptId = reqIdSeq++;\n        this._signaling._wss.send(JSON.stringify({\n            jsonrpc: '2.0',\n            method: 'accept',\n            params: {},\n            id: acceptId\n        }));\n        this.transit(new PendingAcceptAckState(this._signaling, acceptId));\n    }\n    channelDown() {\n        this.transit(new FailedState(this._signaling));\n    }\n    get name() {\n        return \"PendingAcceptState\";\n    }\n}\nexport class PendingAcceptAckState extends FailOnTimeoutState {\n    constructor(signaling, acceptId) {\n        super(signaling, MAX_ACCEPT_BYE_DELAY_MS);\n        this._acceptId = acceptId;\n    }\n    onRpcMsg(msg) {\n        if (msg.id === this._acceptId) {\n            if (msg.error) {\n                this.transit(new FailedState(this._signaling));\n            } else {\n                this._signaling._clientToken = msg.result.clientToken;\n                this.transit(new TalkingState(this._signaling));\n            }\n        }\n    }\n    get name() {\n        return \"PendingAcceptAckState\";\n    }\n}\nexport class TalkingState extends SignalingState {\n    onEnter() {\n        var self = this;\n        new Promise(function notifyHandshaked(resolve) {\n            self._signaling._handshakedHandler();\n            resolve();\n        });\n    }\n    hangup() {\n        var byeId = reqIdSeq++;\n        this._signaling._wss.send(JSON.stringify({\n            jsonrpc: '2.0',\n            method: 'bye',\n            params: {},\n            id: byeId\n        }));\n        this.transit(new PendingRemoteHangupState(this._signaling, byeId));\n    }\n    onRpcMsg(msg) {\n        if (msg.method === 'bye') {\n            this.transit(new PendingLocalHangupState(this._signaling, msg.id));\n        } else if (msg.method === 'renewClientToken') {\n            this._signaling._clientToken = msg.params.clientToken;\n        }\n    }\n    channelDown() {\n        this._signaling._reconnect();\n        this._signaling.transit(new PendingReconnectState(this._signaling));\n    }\n    get name() {\n        return \"TalkingState\";\n    }\n}\nexport class PendingReconnectState extends FailOnTimeoutState {\n    constructor(signaling) {\n        super(signaling, DEFAULT_CONNECT_TIMEOUT_MS);\n    }\n    onOpen() {\n        this.transit(new TalkingState(this._signaling));\n    }\n    channelDown() {\n        this.transit(new FailedState(this._signaling));\n    }\n    get name() {\n        return \"PendingReconnectState\";\n    }\n}\nexport class PendingRemoteHangupState extends FailOnTimeoutState {\n    constructor(signaling, byeId) {\n        super(signaling, MAX_ACCEPT_BYE_DELAY_MS);\n        this._byeId = byeId;\n    }\n    onRpcMsg(msg) {\n        if (msg.id === this._byeId) {\n            this.transit(new DisconnectedState(this._signaling));\n        }\n    }\n    get name() {\n        return \"PendingRemoteHangupState\";\n    }\n}\nexport class PendingLocalHangupState extends SignalingState {\n    constructor(signaling, byeId) {\n        super(signaling);\n        this._byeId = byeId;\n    }\n    onEnter() {\n        var self = this;\n        new Promise(function notifyRemoteHungup(resolve) {\n            self._signaling._remoteHungupHandler();\n            resolve();\n        });\n    }\n    hangup() {\n        var self = this;\n        self._signaling._wss.send(JSON.stringify({\n            jsonrpc: '2.0',\n            result: {},\n            id: self._byeId\n        }));\n        self.transit(new DisconnectedState(self._signaling));\n    }\n    channelDown() {\n        this.transit(new DisconnectedState(this._signaling));\n    }\n    get name() {\n        return \"PendingLocalHangupState\";\n    }\n}\nexport class DisconnectedState extends SignalingState {\n    onEnter() {\n        var self = this;\n        new Promise(function notifyDisconnected(resolve) {\n            self._signaling._disconnectedHandler();\n            resolve();\n        });\n        this._signaling._wss.close();\n    }\n    channelDown() {\n        //Do nothing\n    }\n    get name() {\n        return \"DisconnectedState\";\n    }\n}\nexport class FailedState extends SignalingState {\n    constructor(signaling, exception) {\n        super(signaling);\n        this._exception = exception;\n    }\n    onEnter() {\n        var self = this;\n        new Promise(function notifyFailed(resolve) {\n            self._signaling._failedHandler(self._exception);\n            resolve();\n        });\n        this._signaling._wss.close();\n    }\n    channelDown() {\n        //Do nothing\n    }\n    get name() {\n        return \"FailedState\";\n    }\n    get exception() {\n        return this._exception;\n    }\n}\n\nexport default class AmznRtcSignaling {\n    constructor(callId, signalingUri, contactToken, logger, connectTimeoutMs) {\n        this._callId = callId;\n        this._connectTimeoutMs = connectTimeoutMs || DEFAULT_CONNECT_TIMEOUT_MS;\n        this._autoAnswer = true;\n        this._signalingUri = signalingUri;\n        this._contactToken = contactToken;\n        this._logger = wrapLogger(logger, callId, 'SIGNALING');\n\n        //empty event handlers\n        this._connectedHandler =\n            this._answeredHandler =\n            this._handshakedHandler =\n            this._reconnectedHandler =\n            this._remoteHungupHandler =\n            this._disconnectedHandler =\n            this._failedHandler = function noOp() {\n            };\n    }\n    get callId() {\n        return this._callId;\n    }\n    set onConnected(connectedHandler) {\n        this._connectedHandler = connectedHandler;\n    }\n    set onAnswered(answeredHandler) {\n        this._answeredHandler = answeredHandler;\n    }\n    set onHandshaked(handshakedHandler) {\n        this._handshakedHandler = handshakedHandler;\n    }\n    set onReconnected(reconnectedHandler) {\n        this._reconnectedHandler = reconnectedHandler;\n    }\n    set onRemoteHungup(remoteHungupHandler) {\n        this._remoteHungupHandler = remoteHungupHandler;\n    }\n    set onDisconnected(disconnectedHandler) {\n        this._disconnectedHandler = disconnectedHandler;\n    }\n    set onFailed(failedHandler) {\n        this._failedHandler = failedHandler;\n    }\n    get state() {\n        return this._state;\n    }\n    connect() {\n        this._connect();\n        this.transit(new PendingConnectState(this, this._connectTimeoutMs));\n    }\n    _connect() {\n        this._wss = this._connectWebSocket(this._buildInviteUri());\n    }\n    transit(nextState) {\n        try {\n            this._logger.info((this._state ? this._state.name : 'null') + ' => ' + nextState.name);\n            if (this.state && this.state.onExit) {\n                this.state.onExit();\n            }\n        } finally {\n            this._state = nextState;\n            if (this._state.onEnter) {\n                this._state.onEnter();\n            }\n        }\n    }\n    _connectWebSocket(uri) {\n        var wsConnection = new WebSocket(uri);\n        wsConnection.onopen = hitch(this, this._onOpen);\n        wsConnection.onmessage = hitch(this, this._onMessage);\n        wsConnection.onerror = hitch(this, this._onError);\n        wsConnection.onclose = hitch(this, this._onClose);\n        return wsConnection;\n    }\n    _buildInviteUri() {\n        if (this._contactToken) {\n            return this._buildUriBase() + '&contactCtx=' + encodeURIComponent(this._contactToken);\n        } else {\n            return this._buildUriBase();\n        }\n    }\n    _buildReconnectUri() {\n        return this._buildUriBase() + '&clientToken=' + encodeURIComponent(this._clientToken);\n    }\n    _buildUriBase() {\n        var separator = '?';\n        if (this._signalingUri.indexOf(separator) > -1) {\n            separator = '&';\n        }\n        return this._signalingUri + separator + 'callId=' + encodeURIComponent(this._callId);\n    }\n    _onMessage(evt) {\n        this.state.onRpcMsg(JSON.parse(evt.data));\n    }\n    _onOpen(evt) {\n        this.state.onOpen(evt);\n    }\n    _onError(evt) {\n        this.state.onError(evt);\n    }\n    _onClose(evt) {\n        this._logger.log('WebSocket onclose code=' + evt.code + ', reason=' + evt.reason);\n        this.state.onClose(evt);\n    }\n    _reconnect() {\n        this._wss = this._connectWebSocket(this._buildReconnectUri());\n    }\n    invite(sdp, iceCandidates) {\n        this.state.invite(sdp, iceCandidates);\n    }\n    accept() {\n        this.state.accept();\n    }\n    hangup() {\n        this.state.hangup();\n    }\n}\n","/**\n * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.\n *\n * Licensed under the Amazon Software License (the \"License\"). You may not use this file except in compliance with the License. A copy of the License is located at\n *\n *   http://aws.amazon.com/asl/\n *\n * or in the \"LICENSE\" file accompanying this file. This file is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License.\n */\n\nimport { IllegalParameters } from './exceptions';\nimport { splitSections, splitLines, parseRtpMap, getKind, parseRtpParameters, writeFmtp } from 'sdp';\n\n/**\n * All logging methods used by connect-rtc.\n */\nvar logMethods = ['log', 'info', 'warn', 'error'];\n\n/**\n* Binds the given instance object as the context for\n* the method provided.\n*\n* @param scope The instance object to be set as the scope\n*    of the function.\n* @param method The method to be encapsulated.\n*\n* All other arguments, if any, are bound to the method\n* invocation inside the closure.\n*\n* @return A closure encapsulating the invocation of the\n*    method provided in context of the given instance.\n*/\nexport function hitch() {\n    var args = Array.prototype.slice.call(arguments);\n    var scope = args.shift();\n    var method = args.shift();\n\n    if (!scope) {\n        throw new IllegalParameters('utils.hitch(): scope is required!');\n    }\n\n    if (!method) {\n        throw new IllegalParameters('utils.hitch(): method is required!');\n    }\n\n    if (typeof method !== 'function') {\n        throw new IllegalParameters('utils.hitch(): method is not a function!');\n    }\n\n    return function _hitchedFunction() {\n        var closureArgs = Array.prototype.slice.call(arguments);\n        return method.apply(scope, args.concat(closureArgs));\n    };\n}\n\nexport function wrapLogger(logger, callId, logCategory) {\n    var _logger = {};\n    logMethods.forEach(function (logMethod) {\n        if (!logger[logMethod]) {\n            throw new Error('Logging method ' + logMethod + ' required');\n        }\n        _logger[logMethod] = hitch(logger, logger[logMethod], callId, logCategory);\n    });\n    return _logger;\n}\n\nexport function closeStream(stream) {\n    if (stream) {\n        var tracks = stream.getTracks();\n        for (var i = 0; i < tracks.length; i++) {\n            var track = tracks[i];\n            try {\n                track.stop();\n            } catch (e) {\n                // eat exception\n            }\n        }\n    }\n}\n\n/**\n * A parameter of transformSdp.\n * This defines all the SDP options connect-rtc-js supports.\n */\nexport class SdpOptions {\n    constructor() {\n        this._forceCodec = {};\n    }\n\n    get enableOpusDtx() {\n        return this._enableOpusDtx;\n    }\n\n    /**\n     * By default transformSdp disables dtx for OPUS codec.\n     * Setting this to true would force it to turn on DTX.\n     */\n    set enableOpusDtx(flag) {\n        this._enableOpusDtx = flag;\n    }\n\n    /**\n     * A map from media type (audio/video) to codec (case insensitive).\n     * Add entry for force connect-rtc-js to use specified codec for certain media type.\n     * For example: sdpOptions.forceCodec['audio'] = 'opus';\n     */\n    get forceCodec() {\n        return this._forceCodec;\n    }\n\n    /**\n     * Test if given codec should be removed from SDP.\n     * @param mediaType audio|video\n     * @param codecName case insensitive\n     * @return TRUE - should remove\n     */\n    _shouldDeleteCodec(mediaType, codecName) {\n        var upperCaseCodecName = codecName.toUpperCase();\n        return this._forceCodec[mediaType] && upperCaseCodecName !== this._forceCodec[mediaType].toUpperCase() && upperCaseCodecName !== 'TELEPHONE-EVENT';\n    }\n}\n\n/**\n * Modifies input SDP according to sdpOptions.\n * See SdpOptions for available options.\n * @param sdp original SDP\n * @param sdpOptions defines changes to be applied to SDP\n * @returns a map with 'sdp' containing the transformed SDP and 'mLines' containing the number of m lines in SDP\n */\nexport function transformSdp(sdp, sdpOptions) {\n    var sections = splitSections(sdp);\n    for (var i = 1; i < sections.length; i++) {\n        var mediaType = getKind(sections[i]);\n        var rtpParams = parseRtpParameters(sections[i]);\n        // a map from payload type (string) to codec object\n        var codecMap = rtpParams.codecs.reduce((map, codec) => {\n            map['' + codec.payloadType] = codec;\n            return map;\n        }, {});\n        sections[i] = splitLines(sections[i]).map(line => {\n            if (line.startsWith('m=')) {\n                // modify m= line if SdpOptions#forceCodec specifies codec for current media type\n                if (sdpOptions.forceCodec[mediaType]) {\n                    var targetCodecPts = Object.keys(codecMap).filter(pt => !sdpOptions._shouldDeleteCodec(mediaType, codecMap[pt].name));\n                    return /.*RTP\\/S?AVPF? /.exec(line) + targetCodecPts.join(' ');\n                } else {\n                    return line;\n                }\n            } else if (line.startsWith('a=rtpmap:')) {\n                var rtpMap = parseRtpMap(line);\n                var currentCodec = codecMap[rtpMap.payloadType];\n\n                // remove this codec if SdpOptions#forceCodec specifies a different codec for current media type\n                if (sdpOptions._shouldDeleteCodec(mediaType, currentCodec.name)) {\n                    return null;\n                }\n                \n                // append a=fmtp line immediately if current codec is OPUS (to explicitly specify OPUS parameters)\n                if (currentCodec.name.toUpperCase() === 'OPUS') { \n                    currentCodec.parameters.usedtx = sdpOptions.enableOpusDtx ? 1 : 0;\n                    // generate fmtp line immediately after rtpmap line, and remove original fmtp line once we see it\n                    return (line + \"\\r\\n\" + writeFmtp(currentCodec)).trim();\n                } else {\n                    return line;\n                }\n            } else if (line.startsWith('a=fmtp:')) {\n                var pt = line.substring('a=fmtp:'.length, line.indexOf(' '));\n                var currentCodec = codecMap[pt];// eslint-disable-line no-redeclare\n\n                // remove this codec if SdpOptions#forceCodec specifies a different codec for current media type\n                if (sdpOptions._shouldDeleteCodec(mediaType, currentCodec.name)) {\n                    return null;\n                }\n\n                if (currentCodec.name.toUpperCase() === 'OPUS') {\n                    // this is a line for OPUS, remove it because FMTP line is already generated when rtpmap line is processed\n                    return null;\n                } else {\n                    return line;\n                }\n            } else if (line.startsWith('a=rtcp-fb:')) {\n                var pt = line.substring(line.indexOf(':') + 1, line.indexOf(' '));// eslint-disable-line no-redeclare\n                var currentCodec = codecMap[pt];// eslint-disable-line no-redeclare\n\n                // remove this codec if SdpOptions#forceCodec specifies a different codec for current media type\n                if (sdpOptions._shouldDeleteCodec(mediaType, currentCodec.name)) {\n                    return null;\n                } else {\n                    return line;\n                }\n            } else {\n                return line;\n            }\n        }).filter(line => line !== null).join('\\r\\n');\n\n    }\n    return {\n        sdp: sections.map(section => section.trim()).join('\\r\\n') + '\\r\\n',\n        mLines: sections.length - 1 // first section is session description, the rest are media descriptions\n    };\n}\n\nexport function is_defined(v) {\n    return typeof v !== 'undefined';\n}\n\nexport function when_defined(v, alternativeIn) {\n    var alternative = is_defined(alternativeIn) ? alternativeIn : null;\n    return is_defined(v) ? v : alternative;\n}\n\n"]} diff --git a/release/connect-rtc.js b/release/connect-rtc.js new file mode 100644 index 0000000..a23ee40 --- /dev/null +++ b/release/connect-rtc.js @@ -0,0 +1,9345 @@ +(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i Array#indexOf +// true -> Array#includes +var toIObject = require('./_to-iobject'); +var toLength = require('./_to-length'); +var toAbsoluteIndex = require('./_to-absolute-index'); +module.exports = function (IS_INCLUDES) { + return function ($this, el, fromIndex) { + var O = toIObject($this); + var length = toLength(O.length); + var index = toAbsoluteIndex(fromIndex, length); + var value; + // Array#includes uses SameValueZero equality algorithm + // eslint-disable-next-line no-self-compare + if (IS_INCLUDES && el != el) while (length > index) { + value = O[index++]; + // eslint-disable-next-line no-self-compare + if (value != value) return true; + // Array#indexOf ignores holes, Array#includes - not + } else for (;length > index; index++) if (IS_INCLUDES || index in O) { + if (O[index] === el) return IS_INCLUDES || index || 0; + } return !IS_INCLUDES && -1; + }; +}; + +},{"./_to-absolute-index":87,"./_to-iobject":89,"./_to-length":90}],30:[function(require,module,exports){ +// getting tag from 19.1.3.6 Object.prototype.toString() +var cof = require('./_cof'); +var TAG = require('./_wks')('toStringTag'); +// ES3 wrong here +var ARG = cof(function () { return arguments; }()) == 'Arguments'; + +// fallback for IE11 Script Access Denied error +var tryGet = function (it, key) { + try { + return it[key]; + } catch (e) { /* empty */ } +}; + +module.exports = function (it) { + var O, T, B; + return it === undefined ? 'Undefined' : it === null ? 'Null' + // @@toStringTag case + : typeof (T = tryGet(O = Object(it), TAG)) == 'string' ? T + // builtinTag case + : ARG ? cof(O) + // ES3 arguments fallback + : (B = cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B; +}; + +},{"./_cof":31,"./_wks":97}],31:[function(require,module,exports){ +var toString = {}.toString; + +module.exports = function (it) { + return toString.call(it).slice(8, -1); +}; + +},{}],32:[function(require,module,exports){ +var core = module.exports = { version: '2.6.2' }; +if (typeof __e == 'number') __e = core; // eslint-disable-line no-undef + +},{}],33:[function(require,module,exports){ +// optional / simple context binding +var aFunction = require('./_a-function'); +module.exports = function (fn, that, length) { + aFunction(fn); + if (that === undefined) return fn; + switch (length) { + case 1: return function (a) { + return fn.call(that, a); + }; + case 2: return function (a, b) { + return fn.call(that, a, b); + }; + case 3: return function (a, b, c) { + return fn.call(that, a, b, c); + }; + } + return function (/* ...args */) { + return fn.apply(that, arguments); + }; +}; + +},{"./_a-function":25}],34:[function(require,module,exports){ +// 7.2.1 RequireObjectCoercible(argument) +module.exports = function (it) { + if (it == undefined) throw TypeError("Can't call method on " + it); + return it; +}; + +},{}],35:[function(require,module,exports){ +// Thank's IE8 for his funny defineProperty +module.exports = !require('./_fails')(function () { + return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7; +}); + +},{"./_fails":40}],36:[function(require,module,exports){ +var isObject = require('./_is-object'); +var document = require('./_global').document; +// typeof document.createElement is 'object' in old IE +var is = isObject(document) && isObject(document.createElement); +module.exports = function (it) { + return is ? document.createElement(it) : {}; +}; + +},{"./_global":42,"./_is-object":51}],37:[function(require,module,exports){ +// IE 8- don't enum bug keys +module.exports = ( + 'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf' +).split(','); + +},{}],38:[function(require,module,exports){ +// all enumerable object keys, includes symbols +var getKeys = require('./_object-keys'); +var gOPS = require('./_object-gops'); +var pIE = require('./_object-pie'); +module.exports = function (it) { + var result = getKeys(it); + var getSymbols = gOPS.f; + if (getSymbols) { + var symbols = getSymbols(it); + var isEnum = pIE.f; + var i = 0; + var key; + while (symbols.length > i) if (isEnum.call(it, key = symbols[i++])) result.push(key); + } return result; +}; + +},{"./_object-gops":68,"./_object-keys":71,"./_object-pie":72}],39:[function(require,module,exports){ +var global = require('./_global'); +var core = require('./_core'); +var ctx = require('./_ctx'); +var hide = require('./_hide'); +var has = require('./_has'); +var PROTOTYPE = 'prototype'; + +var $export = function (type, name, source) { + var IS_FORCED = type & $export.F; + var IS_GLOBAL = type & $export.G; + var IS_STATIC = type & $export.S; + var IS_PROTO = type & $export.P; + var IS_BIND = type & $export.B; + var IS_WRAP = type & $export.W; + var exports = IS_GLOBAL ? core : core[name] || (core[name] = {}); + var expProto = exports[PROTOTYPE]; + var target = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE]; + var key, own, out; + if (IS_GLOBAL) source = name; + for (key in source) { + // contains in native + own = !IS_FORCED && target && target[key] !== undefined; + if (own && has(exports, key)) continue; + // export native or passed + out = own ? target[key] : source[key]; + // prevent global pollution for namespaces + exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key] + // bind timers to global for call from export context + : IS_BIND && own ? ctx(out, global) + // wrap global constructors for prevent change them in library + : IS_WRAP && target[key] == out ? (function (C) { + var F = function (a, b, c) { + if (this instanceof C) { + switch (arguments.length) { + case 0: return new C(); + case 1: return new C(a); + case 2: return new C(a, b); + } return new C(a, b, c); + } return C.apply(this, arguments); + }; + F[PROTOTYPE] = C[PROTOTYPE]; + return F; + // make static versions for prototype methods + })(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out; + // export proto methods to core.%CONSTRUCTOR%.methods.%NAME% + if (IS_PROTO) { + (exports.virtual || (exports.virtual = {}))[key] = out; + // export proto methods to core.%CONSTRUCTOR%.prototype.%NAME% + if (type & $export.R && expProto && !expProto[key]) hide(expProto, key, out); + } + } +}; +// type bitmap +$export.F = 1; // forced +$export.G = 2; // global +$export.S = 4; // static +$export.P = 8; // proto +$export.B = 16; // bind +$export.W = 32; // wrap +$export.U = 64; // safe +$export.R = 128; // real proto method for `library` +module.exports = $export; + +},{"./_core":32,"./_ctx":33,"./_global":42,"./_has":43,"./_hide":44}],40:[function(require,module,exports){ +module.exports = function (exec) { + try { + return !!exec(); + } catch (e) { + return true; + } +}; + +},{}],41:[function(require,module,exports){ +var ctx = require('./_ctx'); +var call = require('./_iter-call'); +var isArrayIter = require('./_is-array-iter'); +var anObject = require('./_an-object'); +var toLength = require('./_to-length'); +var getIterFn = require('./core.get-iterator-method'); +var BREAK = {}; +var RETURN = {}; +var exports = module.exports = function (iterable, entries, fn, that, ITERATOR) { + var iterFn = ITERATOR ? function () { return iterable; } : getIterFn(iterable); + var f = ctx(fn, that, entries ? 2 : 1); + var index = 0; + var length, step, iterator, result; + if (typeof iterFn != 'function') throw TypeError(iterable + ' is not iterable!'); + // fast case for arrays with default iterator + if (isArrayIter(iterFn)) for (length = toLength(iterable.length); length > index; index++) { + result = entries ? f(anObject(step = iterable[index])[0], step[1]) : f(iterable[index]); + if (result === BREAK || result === RETURN) return result; + } else for (iterator = iterFn.call(iterable); !(step = iterator.next()).done;) { + result = call(iterator, f, step.value, entries); + if (result === BREAK || result === RETURN) return result; + } +}; +exports.BREAK = BREAK; +exports.RETURN = RETURN; + +},{"./_an-object":28,"./_ctx":33,"./_is-array-iter":49,"./_iter-call":52,"./_to-length":90,"./core.get-iterator-method":98}],42:[function(require,module,exports){ +// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028 +var global = module.exports = typeof window != 'undefined' && window.Math == Math + ? window : typeof self != 'undefined' && self.Math == Math ? self + // eslint-disable-next-line no-new-func + : Function('return this')(); +if (typeof __g == 'number') __g = global; // eslint-disable-line no-undef + +},{}],43:[function(require,module,exports){ +var hasOwnProperty = {}.hasOwnProperty; +module.exports = function (it, key) { + return hasOwnProperty.call(it, key); +}; + +},{}],44:[function(require,module,exports){ +var dP = require('./_object-dp'); +var createDesc = require('./_property-desc'); +module.exports = require('./_descriptors') ? function (object, key, value) { + return dP.f(object, key, createDesc(1, value)); +} : function (object, key, value) { + object[key] = value; + return object; +}; + +},{"./_descriptors":35,"./_object-dp":63,"./_property-desc":76}],45:[function(require,module,exports){ +var document = require('./_global').document; +module.exports = document && document.documentElement; + +},{"./_global":42}],46:[function(require,module,exports){ +module.exports = !require('./_descriptors') && !require('./_fails')(function () { + return Object.defineProperty(require('./_dom-create')('div'), 'a', { get: function () { return 7; } }).a != 7; +}); + +},{"./_descriptors":35,"./_dom-create":36,"./_fails":40}],47:[function(require,module,exports){ +// fast apply, http://jsperf.lnkit.com/fast-apply/5 +module.exports = function (fn, args, that) { + var un = that === undefined; + switch (args.length) { + case 0: return un ? fn() + : fn.call(that); + case 1: return un ? fn(args[0]) + : fn.call(that, args[0]); + case 2: return un ? fn(args[0], args[1]) + : fn.call(that, args[0], args[1]); + case 3: return un ? fn(args[0], args[1], args[2]) + : fn.call(that, args[0], args[1], args[2]); + case 4: return un ? fn(args[0], args[1], args[2], args[3]) + : fn.call(that, args[0], args[1], args[2], args[3]); + } return fn.apply(that, args); +}; + +},{}],48:[function(require,module,exports){ +// fallback for non-array-like ES3 and non-enumerable old V8 strings +var cof = require('./_cof'); +// eslint-disable-next-line no-prototype-builtins +module.exports = Object('z').propertyIsEnumerable(0) ? Object : function (it) { + return cof(it) == 'String' ? it.split('') : Object(it); +}; + +},{"./_cof":31}],49:[function(require,module,exports){ +// check on default Array iterator +var Iterators = require('./_iterators'); +var ITERATOR = require('./_wks')('iterator'); +var ArrayProto = Array.prototype; + +module.exports = function (it) { + return it !== undefined && (Iterators.Array === it || ArrayProto[ITERATOR] === it); +}; + +},{"./_iterators":57,"./_wks":97}],50:[function(require,module,exports){ +// 7.2.2 IsArray(argument) +var cof = require('./_cof'); +module.exports = Array.isArray || function isArray(arg) { + return cof(arg) == 'Array'; +}; + +},{"./_cof":31}],51:[function(require,module,exports){ +module.exports = function (it) { + return typeof it === 'object' ? it !== null : typeof it === 'function'; +}; + +},{}],52:[function(require,module,exports){ +// call something on iterator step with safe closing on error +var anObject = require('./_an-object'); +module.exports = function (iterator, fn, value, entries) { + try { + return entries ? fn(anObject(value)[0], value[1]) : fn(value); + // 7.4.6 IteratorClose(iterator, completion) + } catch (e) { + var ret = iterator['return']; + if (ret !== undefined) anObject(ret.call(iterator)); + throw e; + } +}; + +},{"./_an-object":28}],53:[function(require,module,exports){ +'use strict'; +var create = require('./_object-create'); +var descriptor = require('./_property-desc'); +var setToStringTag = require('./_set-to-string-tag'); +var IteratorPrototype = {}; + +// 25.1.2.1.1 %IteratorPrototype%[@@iterator]() +require('./_hide')(IteratorPrototype, require('./_wks')('iterator'), function () { return this; }); + +module.exports = function (Constructor, NAME, next) { + Constructor.prototype = create(IteratorPrototype, { next: descriptor(1, next) }); + setToStringTag(Constructor, NAME + ' Iterator'); +}; + +},{"./_hide":44,"./_object-create":62,"./_property-desc":76,"./_set-to-string-tag":81,"./_wks":97}],54:[function(require,module,exports){ +'use strict'; +var LIBRARY = require('./_library'); +var $export = require('./_export'); +var redefine = require('./_redefine'); +var hide = require('./_hide'); +var Iterators = require('./_iterators'); +var $iterCreate = require('./_iter-create'); +var setToStringTag = require('./_set-to-string-tag'); +var getPrototypeOf = require('./_object-gpo'); +var ITERATOR = require('./_wks')('iterator'); +var BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next` +var FF_ITERATOR = '@@iterator'; +var KEYS = 'keys'; +var VALUES = 'values'; + +var returnThis = function () { return this; }; + +module.exports = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) { + $iterCreate(Constructor, NAME, next); + var getMethod = function (kind) { + if (!BUGGY && kind in proto) return proto[kind]; + switch (kind) { + case KEYS: return function keys() { return new Constructor(this, kind); }; + case VALUES: return function values() { return new Constructor(this, kind); }; + } return function entries() { return new Constructor(this, kind); }; + }; + var TAG = NAME + ' Iterator'; + var DEF_VALUES = DEFAULT == VALUES; + var VALUES_BUG = false; + var proto = Base.prototype; + var $native = proto[ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT]; + var $default = $native || getMethod(DEFAULT); + var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined; + var $anyNative = NAME == 'Array' ? proto.entries || $native : $native; + var methods, key, IteratorPrototype; + // Fix native + if ($anyNative) { + IteratorPrototype = getPrototypeOf($anyNative.call(new Base())); + if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) { + // Set @@toStringTag to native iterators + setToStringTag(IteratorPrototype, TAG, true); + // fix for some old engines + if (!LIBRARY && typeof IteratorPrototype[ITERATOR] != 'function') hide(IteratorPrototype, ITERATOR, returnThis); + } + } + // fix Array#{values, @@iterator}.name in V8 / FF + if (DEF_VALUES && $native && $native.name !== VALUES) { + VALUES_BUG = true; + $default = function values() { return $native.call(this); }; + } + // Define iterator + if ((!LIBRARY || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR])) { + hide(proto, ITERATOR, $default); + } + // Plug for library + Iterators[NAME] = $default; + Iterators[TAG] = returnThis; + if (DEFAULT) { + methods = { + values: DEF_VALUES ? $default : getMethod(VALUES), + keys: IS_SET ? $default : getMethod(KEYS), + entries: $entries + }; + if (FORCED) for (key in methods) { + if (!(key in proto)) redefine(proto, key, methods[key]); + } else $export($export.P + $export.F * (BUGGY || VALUES_BUG), NAME, methods); + } + return methods; +}; + +},{"./_export":39,"./_hide":44,"./_iter-create":53,"./_iterators":57,"./_library":58,"./_object-gpo":69,"./_redefine":78,"./_set-to-string-tag":81,"./_wks":97}],55:[function(require,module,exports){ +var ITERATOR = require('./_wks')('iterator'); +var SAFE_CLOSING = false; + +try { + var riter = [7][ITERATOR](); + riter['return'] = function () { SAFE_CLOSING = true; }; + // eslint-disable-next-line no-throw-literal + Array.from(riter, function () { throw 2; }); +} catch (e) { /* empty */ } + +module.exports = function (exec, skipClosing) { + if (!skipClosing && !SAFE_CLOSING) return false; + var safe = false; + try { + var arr = [7]; + var iter = arr[ITERATOR](); + iter.next = function () { return { done: safe = true }; }; + arr[ITERATOR] = function () { return iter; }; + exec(arr); + } catch (e) { /* empty */ } + return safe; +}; + +},{"./_wks":97}],56:[function(require,module,exports){ +module.exports = function (done, value) { + return { value: value, done: !!done }; +}; + +},{}],57:[function(require,module,exports){ +module.exports = {}; + +},{}],58:[function(require,module,exports){ +module.exports = true; + +},{}],59:[function(require,module,exports){ +var META = require('./_uid')('meta'); +var isObject = require('./_is-object'); +var has = require('./_has'); +var setDesc = require('./_object-dp').f; +var id = 0; +var isExtensible = Object.isExtensible || function () { + return true; +}; +var FREEZE = !require('./_fails')(function () { + return isExtensible(Object.preventExtensions({})); +}); +var setMeta = function (it) { + setDesc(it, META, { value: { + i: 'O' + ++id, // object ID + w: {} // weak collections IDs + } }); +}; +var fastKey = function (it, create) { + // return primitive with prefix + if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it; + if (!has(it, META)) { + // can't set metadata to uncaught frozen object + if (!isExtensible(it)) return 'F'; + // not necessary to add metadata + if (!create) return 'E'; + // add missing metadata + setMeta(it); + // return object ID + } return it[META].i; +}; +var getWeak = function (it, create) { + if (!has(it, META)) { + // can't set metadata to uncaught frozen object + if (!isExtensible(it)) return true; + // not necessary to add metadata + if (!create) return false; + // add missing metadata + setMeta(it); + // return hash weak collections IDs + } return it[META].w; +}; +// add metadata on freeze-family methods calling +var onFreeze = function (it) { + if (FREEZE && meta.NEED && isExtensible(it) && !has(it, META)) setMeta(it); + return it; +}; +var meta = module.exports = { + KEY: META, + NEED: false, + fastKey: fastKey, + getWeak: getWeak, + onFreeze: onFreeze +}; + +},{"./_fails":40,"./_has":43,"./_is-object":51,"./_object-dp":63,"./_uid":93}],60:[function(require,module,exports){ +var global = require('./_global'); +var macrotask = require('./_task').set; +var Observer = global.MutationObserver || global.WebKitMutationObserver; +var process = global.process; +var Promise = global.Promise; +var isNode = require('./_cof')(process) == 'process'; + +module.exports = function () { + var head, last, notify; + + var flush = function () { + var parent, fn; + if (isNode && (parent = process.domain)) parent.exit(); + while (head) { + fn = head.fn; + head = head.next; + try { + fn(); + } catch (e) { + if (head) notify(); + else last = undefined; + throw e; + } + } last = undefined; + if (parent) parent.enter(); + }; + + // Node.js + if (isNode) { + notify = function () { + process.nextTick(flush); + }; + // browsers with MutationObserver, except iOS Safari - https://github.com/zloirock/core-js/issues/339 + } else if (Observer && !(global.navigator && global.navigator.standalone)) { + var toggle = true; + var node = document.createTextNode(''); + new Observer(flush).observe(node, { characterData: true }); // eslint-disable-line no-new + notify = function () { + node.data = toggle = !toggle; + }; + // environments with maybe non-completely correct, but existent Promise + } else if (Promise && Promise.resolve) { + // Promise.resolve without an argument throws an error in LG WebOS 2 + var promise = Promise.resolve(undefined); + notify = function () { + promise.then(flush); + }; + // for other environments - macrotask based on: + // - setImmediate + // - MessageChannel + // - window.postMessag + // - onreadystatechange + // - setTimeout + } else { + notify = function () { + // strange IE + webpack dev server bug - use .call(global) + macrotask.call(global, flush); + }; + } + + return function (fn) { + var task = { fn: fn, next: undefined }; + if (last) last.next = task; + if (!head) { + head = task; + notify(); + } last = task; + }; +}; + +},{"./_cof":31,"./_global":42,"./_task":86}],61:[function(require,module,exports){ +'use strict'; +// 25.4.1.5 NewPromiseCapability(C) +var aFunction = require('./_a-function'); + +function PromiseCapability(C) { + var resolve, reject; + this.promise = new C(function ($$resolve, $$reject) { + if (resolve !== undefined || reject !== undefined) throw TypeError('Bad Promise constructor'); + resolve = $$resolve; + reject = $$reject; + }); + this.resolve = aFunction(resolve); + this.reject = aFunction(reject); +} + +module.exports.f = function (C) { + return new PromiseCapability(C); +}; + +},{"./_a-function":25}],62:[function(require,module,exports){ +// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties]) +var anObject = require('./_an-object'); +var dPs = require('./_object-dps'); +var enumBugKeys = require('./_enum-bug-keys'); +var IE_PROTO = require('./_shared-key')('IE_PROTO'); +var Empty = function () { /* empty */ }; +var PROTOTYPE = 'prototype'; + +// Create object with fake `null` prototype: use iframe Object with cleared prototype +var createDict = function () { + // Thrash, waste and sodomy: IE GC bug + var iframe = require('./_dom-create')('iframe'); + var i = enumBugKeys.length; + var lt = '<'; + var gt = '>'; + var iframeDocument; + iframe.style.display = 'none'; + require('./_html').appendChild(iframe); + iframe.src = 'javascript:'; // eslint-disable-line no-script-url + // createDict = iframe.contentWindow.Object; + // html.removeChild(iframe); + iframeDocument = iframe.contentWindow.document; + iframeDocument.open(); + iframeDocument.write(lt + 'script' + gt + 'document.F=Object' + lt + '/script' + gt); + iframeDocument.close(); + createDict = iframeDocument.F; + while (i--) delete createDict[PROTOTYPE][enumBugKeys[i]]; + return createDict(); +}; + +module.exports = Object.create || function create(O, Properties) { + var result; + if (O !== null) { + Empty[PROTOTYPE] = anObject(O); + result = new Empty(); + Empty[PROTOTYPE] = null; + // add "__proto__" for Object.getPrototypeOf polyfill + result[IE_PROTO] = O; + } else result = createDict(); + return Properties === undefined ? result : dPs(result, Properties); +}; + +},{"./_an-object":28,"./_dom-create":36,"./_enum-bug-keys":37,"./_html":45,"./_object-dps":64,"./_shared-key":82}],63:[function(require,module,exports){ +var anObject = require('./_an-object'); +var IE8_DOM_DEFINE = require('./_ie8-dom-define'); +var toPrimitive = require('./_to-primitive'); +var dP = Object.defineProperty; + +exports.f = require('./_descriptors') ? Object.defineProperty : function defineProperty(O, P, Attributes) { + anObject(O); + P = toPrimitive(P, true); + anObject(Attributes); + if (IE8_DOM_DEFINE) try { + return dP(O, P, Attributes); + } catch (e) { /* empty */ } + if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!'); + if ('value' in Attributes) O[P] = Attributes.value; + return O; +}; + +},{"./_an-object":28,"./_descriptors":35,"./_ie8-dom-define":46,"./_to-primitive":92}],64:[function(require,module,exports){ +var dP = require('./_object-dp'); +var anObject = require('./_an-object'); +var getKeys = require('./_object-keys'); + +module.exports = require('./_descriptors') ? Object.defineProperties : function defineProperties(O, Properties) { + anObject(O); + var keys = getKeys(Properties); + var length = keys.length; + var i = 0; + var P; + while (length > i) dP.f(O, P = keys[i++], Properties[P]); + return O; +}; + +},{"./_an-object":28,"./_descriptors":35,"./_object-dp":63,"./_object-keys":71}],65:[function(require,module,exports){ +var pIE = require('./_object-pie'); +var createDesc = require('./_property-desc'); +var toIObject = require('./_to-iobject'); +var toPrimitive = require('./_to-primitive'); +var has = require('./_has'); +var IE8_DOM_DEFINE = require('./_ie8-dom-define'); +var gOPD = Object.getOwnPropertyDescriptor; + +exports.f = require('./_descriptors') ? gOPD : function getOwnPropertyDescriptor(O, P) { + O = toIObject(O); + P = toPrimitive(P, true); + if (IE8_DOM_DEFINE) try { + return gOPD(O, P); + } catch (e) { /* empty */ } + if (has(O, P)) return createDesc(!pIE.f.call(O, P), O[P]); +}; + +},{"./_descriptors":35,"./_has":43,"./_ie8-dom-define":46,"./_object-pie":72,"./_property-desc":76,"./_to-iobject":89,"./_to-primitive":92}],66:[function(require,module,exports){ +// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window +var toIObject = require('./_to-iobject'); +var gOPN = require('./_object-gopn').f; +var toString = {}.toString; + +var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames + ? Object.getOwnPropertyNames(window) : []; + +var getWindowNames = function (it) { + try { + return gOPN(it); + } catch (e) { + return windowNames.slice(); + } +}; + +module.exports.f = function getOwnPropertyNames(it) { + return windowNames && toString.call(it) == '[object Window]' ? getWindowNames(it) : gOPN(toIObject(it)); +}; + +},{"./_object-gopn":67,"./_to-iobject":89}],67:[function(require,module,exports){ +// 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O) +var $keys = require('./_object-keys-internal'); +var hiddenKeys = require('./_enum-bug-keys').concat('length', 'prototype'); + +exports.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) { + return $keys(O, hiddenKeys); +}; + +},{"./_enum-bug-keys":37,"./_object-keys-internal":70}],68:[function(require,module,exports){ +exports.f = Object.getOwnPropertySymbols; + +},{}],69:[function(require,module,exports){ +// 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O) +var has = require('./_has'); +var toObject = require('./_to-object'); +var IE_PROTO = require('./_shared-key')('IE_PROTO'); +var ObjectProto = Object.prototype; + +module.exports = Object.getPrototypeOf || function (O) { + O = toObject(O); + if (has(O, IE_PROTO)) return O[IE_PROTO]; + if (typeof O.constructor == 'function' && O instanceof O.constructor) { + return O.constructor.prototype; + } return O instanceof Object ? ObjectProto : null; +}; + +},{"./_has":43,"./_shared-key":82,"./_to-object":91}],70:[function(require,module,exports){ +var has = require('./_has'); +var toIObject = require('./_to-iobject'); +var arrayIndexOf = require('./_array-includes')(false); +var IE_PROTO = require('./_shared-key')('IE_PROTO'); + +module.exports = function (object, names) { + var O = toIObject(object); + var i = 0; + var result = []; + var key; + for (key in O) if (key != IE_PROTO) has(O, key) && result.push(key); + // Don't enum bug & hidden keys + while (names.length > i) if (has(O, key = names[i++])) { + ~arrayIndexOf(result, key) || result.push(key); + } + return result; +}; + +},{"./_array-includes":29,"./_has":43,"./_shared-key":82,"./_to-iobject":89}],71:[function(require,module,exports){ +// 19.1.2.14 / 15.2.3.14 Object.keys(O) +var $keys = require('./_object-keys-internal'); +var enumBugKeys = require('./_enum-bug-keys'); + +module.exports = Object.keys || function keys(O) { + return $keys(O, enumBugKeys); +}; + +},{"./_enum-bug-keys":37,"./_object-keys-internal":70}],72:[function(require,module,exports){ +exports.f = {}.propertyIsEnumerable; + +},{}],73:[function(require,module,exports){ +// most Object methods by ES6 should accept primitives +var $export = require('./_export'); +var core = require('./_core'); +var fails = require('./_fails'); +module.exports = function (KEY, exec) { + var fn = (core.Object || {})[KEY] || Object[KEY]; + var exp = {}; + exp[KEY] = exec(fn); + $export($export.S + $export.F * fails(function () { fn(1); }), 'Object', exp); +}; + +},{"./_core":32,"./_export":39,"./_fails":40}],74:[function(require,module,exports){ +module.exports = function (exec) { + try { + return { e: false, v: exec() }; + } catch (e) { + return { e: true, v: e }; + } +}; + +},{}],75:[function(require,module,exports){ +var anObject = require('./_an-object'); +var isObject = require('./_is-object'); +var newPromiseCapability = require('./_new-promise-capability'); + +module.exports = function (C, x) { + anObject(C); + if (isObject(x) && x.constructor === C) return x; + var promiseCapability = newPromiseCapability.f(C); + var resolve = promiseCapability.resolve; + resolve(x); + return promiseCapability.promise; +}; + +},{"./_an-object":28,"./_is-object":51,"./_new-promise-capability":61}],76:[function(require,module,exports){ +module.exports = function (bitmap, value) { + return { + enumerable: !(bitmap & 1), + configurable: !(bitmap & 2), + writable: !(bitmap & 4), + value: value + }; +}; + +},{}],77:[function(require,module,exports){ +var hide = require('./_hide'); +module.exports = function (target, src, safe) { + for (var key in src) { + if (safe && target[key]) target[key] = src[key]; + else hide(target, key, src[key]); + } return target; +}; + +},{"./_hide":44}],78:[function(require,module,exports){ +module.exports = require('./_hide'); + +},{"./_hide":44}],79:[function(require,module,exports){ +// Works with __proto__ only. Old v8 can't work with null proto objects. +/* eslint-disable no-proto */ +var isObject = require('./_is-object'); +var anObject = require('./_an-object'); +var check = function (O, proto) { + anObject(O); + if (!isObject(proto) && proto !== null) throw TypeError(proto + ": can't set as prototype!"); +}; +module.exports = { + set: Object.setPrototypeOf || ('__proto__' in {} ? // eslint-disable-line + function (test, buggy, set) { + try { + set = require('./_ctx')(Function.call, require('./_object-gopd').f(Object.prototype, '__proto__').set, 2); + set(test, []); + buggy = !(test instanceof Array); + } catch (e) { buggy = true; } + return function setPrototypeOf(O, proto) { + check(O, proto); + if (buggy) O.__proto__ = proto; + else set(O, proto); + return O; + }; + }({}, false) : undefined), + check: check +}; + +},{"./_an-object":28,"./_ctx":33,"./_is-object":51,"./_object-gopd":65}],80:[function(require,module,exports){ +'use strict'; +var global = require('./_global'); +var core = require('./_core'); +var dP = require('./_object-dp'); +var DESCRIPTORS = require('./_descriptors'); +var SPECIES = require('./_wks')('species'); + +module.exports = function (KEY) { + var C = typeof core[KEY] == 'function' ? core[KEY] : global[KEY]; + if (DESCRIPTORS && C && !C[SPECIES]) dP.f(C, SPECIES, { + configurable: true, + get: function () { return this; } + }); +}; + +},{"./_core":32,"./_descriptors":35,"./_global":42,"./_object-dp":63,"./_wks":97}],81:[function(require,module,exports){ +var def = require('./_object-dp').f; +var has = require('./_has'); +var TAG = require('./_wks')('toStringTag'); + +module.exports = function (it, tag, stat) { + if (it && !has(it = stat ? it : it.prototype, TAG)) def(it, TAG, { configurable: true, value: tag }); +}; + +},{"./_has":43,"./_object-dp":63,"./_wks":97}],82:[function(require,module,exports){ +var shared = require('./_shared')('keys'); +var uid = require('./_uid'); +module.exports = function (key) { + return shared[key] || (shared[key] = uid(key)); +}; + +},{"./_shared":83,"./_uid":93}],83:[function(require,module,exports){ +var core = require('./_core'); +var global = require('./_global'); +var SHARED = '__core-js_shared__'; +var store = global[SHARED] || (global[SHARED] = {}); + +(module.exports = function (key, value) { + return store[key] || (store[key] = value !== undefined ? value : {}); +})('versions', []).push({ + version: core.version, + mode: require('./_library') ? 'pure' : 'global', + copyright: '© 2019 Denis Pushkarev (zloirock.ru)' +}); + +},{"./_core":32,"./_global":42,"./_library":58}],84:[function(require,module,exports){ +// 7.3.20 SpeciesConstructor(O, defaultConstructor) +var anObject = require('./_an-object'); +var aFunction = require('./_a-function'); +var SPECIES = require('./_wks')('species'); +module.exports = function (O, D) { + var C = anObject(O).constructor; + var S; + return C === undefined || (S = anObject(C)[SPECIES]) == undefined ? D : aFunction(S); +}; + +},{"./_a-function":25,"./_an-object":28,"./_wks":97}],85:[function(require,module,exports){ +var toInteger = require('./_to-integer'); +var defined = require('./_defined'); +// true -> String#at +// false -> String#codePointAt +module.exports = function (TO_STRING) { + return function (that, pos) { + var s = String(defined(that)); + var i = toInteger(pos); + var l = s.length; + var a, b; + if (i < 0 || i >= l) return TO_STRING ? '' : undefined; + a = s.charCodeAt(i); + return a < 0xd800 || a > 0xdbff || i + 1 === l || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff + ? TO_STRING ? s.charAt(i) : a + : TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000; + }; +}; + +},{"./_defined":34,"./_to-integer":88}],86:[function(require,module,exports){ +var ctx = require('./_ctx'); +var invoke = require('./_invoke'); +var html = require('./_html'); +var cel = require('./_dom-create'); +var global = require('./_global'); +var process = global.process; +var setTask = global.setImmediate; +var clearTask = global.clearImmediate; +var MessageChannel = global.MessageChannel; +var Dispatch = global.Dispatch; +var counter = 0; +var queue = {}; +var ONREADYSTATECHANGE = 'onreadystatechange'; +var defer, channel, port; +var run = function () { + var id = +this; + // eslint-disable-next-line no-prototype-builtins + if (queue.hasOwnProperty(id)) { + var fn = queue[id]; + delete queue[id]; + fn(); + } +}; +var listener = function (event) { + run.call(event.data); +}; +// Node.js 0.9+ & IE10+ has setImmediate, otherwise: +if (!setTask || !clearTask) { + setTask = function setImmediate(fn) { + var args = []; + var i = 1; + while (arguments.length > i) args.push(arguments[i++]); + queue[++counter] = function () { + // eslint-disable-next-line no-new-func + invoke(typeof fn == 'function' ? fn : Function(fn), args); + }; + defer(counter); + return counter; + }; + clearTask = function clearImmediate(id) { + delete queue[id]; + }; + // Node.js 0.8- + if (require('./_cof')(process) == 'process') { + defer = function (id) { + process.nextTick(ctx(run, id, 1)); + }; + // Sphere (JS game engine) Dispatch API + } else if (Dispatch && Dispatch.now) { + defer = function (id) { + Dispatch.now(ctx(run, id, 1)); + }; + // Browsers with MessageChannel, includes WebWorkers + } else if (MessageChannel) { + channel = new MessageChannel(); + port = channel.port2; + channel.port1.onmessage = listener; + defer = ctx(port.postMessage, port, 1); + // Browsers with postMessage, skip WebWorkers + // IE8 has postMessage, but it's sync & typeof its postMessage is 'object' + } else if (global.addEventListener && typeof postMessage == 'function' && !global.importScripts) { + defer = function (id) { + global.postMessage(id + '', '*'); + }; + global.addEventListener('message', listener, false); + // IE8- + } else if (ONREADYSTATECHANGE in cel('script')) { + defer = function (id) { + html.appendChild(cel('script'))[ONREADYSTATECHANGE] = function () { + html.removeChild(this); + run.call(id); + }; + }; + // Rest old browsers + } else { + defer = function (id) { + setTimeout(ctx(run, id, 1), 0); + }; + } +} +module.exports = { + set: setTask, + clear: clearTask +}; + +},{"./_cof":31,"./_ctx":33,"./_dom-create":36,"./_global":42,"./_html":45,"./_invoke":47}],87:[function(require,module,exports){ +var toInteger = require('./_to-integer'); +var max = Math.max; +var min = Math.min; +module.exports = function (index, length) { + index = toInteger(index); + return index < 0 ? max(index + length, 0) : min(index, length); +}; + +},{"./_to-integer":88}],88:[function(require,module,exports){ +// 7.1.4 ToInteger +var ceil = Math.ceil; +var floor = Math.floor; +module.exports = function (it) { + return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it); +}; + +},{}],89:[function(require,module,exports){ +// to indexed object, toObject with fallback for non-array-like ES3 strings +var IObject = require('./_iobject'); +var defined = require('./_defined'); +module.exports = function (it) { + return IObject(defined(it)); +}; + +},{"./_defined":34,"./_iobject":48}],90:[function(require,module,exports){ +// 7.1.15 ToLength +var toInteger = require('./_to-integer'); +var min = Math.min; +module.exports = function (it) { + return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991 +}; + +},{"./_to-integer":88}],91:[function(require,module,exports){ +// 7.1.13 ToObject(argument) +var defined = require('./_defined'); +module.exports = function (it) { + return Object(defined(it)); +}; + +},{"./_defined":34}],92:[function(require,module,exports){ +// 7.1.1 ToPrimitive(input [, PreferredType]) +var isObject = require('./_is-object'); +// instead of the ES6 spec version, we didn't implement @@toPrimitive case +// and the second argument - flag - preferred type is a string +module.exports = function (it, S) { + if (!isObject(it)) return it; + var fn, val; + if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val; + if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val; + if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val; + throw TypeError("Can't convert object to primitive value"); +}; + +},{"./_is-object":51}],93:[function(require,module,exports){ +var id = 0; +var px = Math.random(); +module.exports = function (key) { + return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36)); +}; + +},{}],94:[function(require,module,exports){ +var global = require('./_global'); +var navigator = global.navigator; + +module.exports = navigator && navigator.userAgent || ''; + +},{"./_global":42}],95:[function(require,module,exports){ +var global = require('./_global'); +var core = require('./_core'); +var LIBRARY = require('./_library'); +var wksExt = require('./_wks-ext'); +var defineProperty = require('./_object-dp').f; +module.exports = function (name) { + var $Symbol = core.Symbol || (core.Symbol = LIBRARY ? {} : global.Symbol || {}); + if (name.charAt(0) != '_' && !(name in $Symbol)) defineProperty($Symbol, name, { value: wksExt.f(name) }); +}; + +},{"./_core":32,"./_global":42,"./_library":58,"./_object-dp":63,"./_wks-ext":96}],96:[function(require,module,exports){ +exports.f = require('./_wks'); + +},{"./_wks":97}],97:[function(require,module,exports){ +var store = require('./_shared')('wks'); +var uid = require('./_uid'); +var Symbol = require('./_global').Symbol; +var USE_SYMBOL = typeof Symbol == 'function'; + +var $exports = module.exports = function (name) { + return store[name] || (store[name] = + USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name)); +}; + +$exports.store = store; + +},{"./_global":42,"./_shared":83,"./_uid":93}],98:[function(require,module,exports){ +var classof = require('./_classof'); +var ITERATOR = require('./_wks')('iterator'); +var Iterators = require('./_iterators'); +module.exports = require('./_core').getIteratorMethod = function (it) { + if (it != undefined) return it[ITERATOR] + || it['@@iterator'] + || Iterators[classof(it)]; +}; + +},{"./_classof":30,"./_core":32,"./_iterators":57,"./_wks":97}],99:[function(require,module,exports){ +'use strict'; +var addToUnscopables = require('./_add-to-unscopables'); +var step = require('./_iter-step'); +var Iterators = require('./_iterators'); +var toIObject = require('./_to-iobject'); + +// 22.1.3.4 Array.prototype.entries() +// 22.1.3.13 Array.prototype.keys() +// 22.1.3.29 Array.prototype.values() +// 22.1.3.30 Array.prototype[@@iterator]() +module.exports = require('./_iter-define')(Array, 'Array', function (iterated, kind) { + this._t = toIObject(iterated); // target + this._i = 0; // next index + this._k = kind; // kind +// 22.1.5.2.1 %ArrayIteratorPrototype%.next() +}, function () { + var O = this._t; + var kind = this._k; + var index = this._i++; + if (!O || index >= O.length) { + this._t = undefined; + return step(1); + } + if (kind == 'keys') return step(0, index); + if (kind == 'values') return step(0, O[index]); + return step(0, [index, O[index]]); +}, 'values'); + +// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7) +Iterators.Arguments = Iterators.Array; + +addToUnscopables('keys'); +addToUnscopables('values'); +addToUnscopables('entries'); + +},{"./_add-to-unscopables":26,"./_iter-define":54,"./_iter-step":56,"./_iterators":57,"./_to-iobject":89}],100:[function(require,module,exports){ +var $export = require('./_export'); +// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties]) +$export($export.S, 'Object', { create: require('./_object-create') }); + +},{"./_export":39,"./_object-create":62}],101:[function(require,module,exports){ +var $export = require('./_export'); +// 19.1.2.4 / 15.2.3.6 Object.defineProperty(O, P, Attributes) +$export($export.S + $export.F * !require('./_descriptors'), 'Object', { defineProperty: require('./_object-dp').f }); + +},{"./_descriptors":35,"./_export":39,"./_object-dp":63}],102:[function(require,module,exports){ +// 19.1.2.6 Object.getOwnPropertyDescriptor(O, P) +var toIObject = require('./_to-iobject'); +var $getOwnPropertyDescriptor = require('./_object-gopd').f; + +require('./_object-sap')('getOwnPropertyDescriptor', function () { + return function getOwnPropertyDescriptor(it, key) { + return $getOwnPropertyDescriptor(toIObject(it), key); + }; +}); + +},{"./_object-gopd":65,"./_object-sap":73,"./_to-iobject":89}],103:[function(require,module,exports){ +// 19.1.2.9 Object.getPrototypeOf(O) +var toObject = require('./_to-object'); +var $getPrototypeOf = require('./_object-gpo'); + +require('./_object-sap')('getPrototypeOf', function () { + return function getPrototypeOf(it) { + return $getPrototypeOf(toObject(it)); + }; +}); + +},{"./_object-gpo":69,"./_object-sap":73,"./_to-object":91}],104:[function(require,module,exports){ +// 19.1.3.19 Object.setPrototypeOf(O, proto) +var $export = require('./_export'); +$export($export.S, 'Object', { setPrototypeOf: require('./_set-proto').set }); + +},{"./_export":39,"./_set-proto":79}],105:[function(require,module,exports){ + +},{}],106:[function(require,module,exports){ +'use strict'; +var LIBRARY = require('./_library'); +var global = require('./_global'); +var ctx = require('./_ctx'); +var classof = require('./_classof'); +var $export = require('./_export'); +var isObject = require('./_is-object'); +var aFunction = require('./_a-function'); +var anInstance = require('./_an-instance'); +var forOf = require('./_for-of'); +var speciesConstructor = require('./_species-constructor'); +var task = require('./_task').set; +var microtask = require('./_microtask')(); +var newPromiseCapabilityModule = require('./_new-promise-capability'); +var perform = require('./_perform'); +var userAgent = require('./_user-agent'); +var promiseResolve = require('./_promise-resolve'); +var PROMISE = 'Promise'; +var TypeError = global.TypeError; +var process = global.process; +var versions = process && process.versions; +var v8 = versions && versions.v8 || ''; +var $Promise = global[PROMISE]; +var isNode = classof(process) == 'process'; +var empty = function () { /* empty */ }; +var Internal, newGenericPromiseCapability, OwnPromiseCapability, Wrapper; +var newPromiseCapability = newGenericPromiseCapability = newPromiseCapabilityModule.f; + +var USE_NATIVE = !!function () { + try { + // correct subclassing with @@species support + var promise = $Promise.resolve(1); + var FakePromise = (promise.constructor = {})[require('./_wks')('species')] = function (exec) { + exec(empty, empty); + }; + // unhandled rejections tracking support, NodeJS Promise without it fails @@species test + return (isNode || typeof PromiseRejectionEvent == 'function') + && promise.then(empty) instanceof FakePromise + // v8 6.6 (Node 10 and Chrome 66) have a bug with resolving custom thenables + // https://bugs.chromium.org/p/chromium/issues/detail?id=830565 + // we can't detect it synchronously, so just check versions + && v8.indexOf('6.6') !== 0 + && userAgent.indexOf('Chrome/66') === -1; + } catch (e) { /* empty */ } +}(); + +// helpers +var isThenable = function (it) { + var then; + return isObject(it) && typeof (then = it.then) == 'function' ? then : false; +}; +var notify = function (promise, isReject) { + if (promise._n) return; + promise._n = true; + var chain = promise._c; + microtask(function () { + var value = promise._v; + var ok = promise._s == 1; + var i = 0; + var run = function (reaction) { + var handler = ok ? reaction.ok : reaction.fail; + var resolve = reaction.resolve; + var reject = reaction.reject; + var domain = reaction.domain; + var result, then, exited; + try { + if (handler) { + if (!ok) { + if (promise._h == 2) onHandleUnhandled(promise); + promise._h = 1; + } + if (handler === true) result = value; + else { + if (domain) domain.enter(); + result = handler(value); // may throw + if (domain) { + domain.exit(); + exited = true; + } + } + if (result === reaction.promise) { + reject(TypeError('Promise-chain cycle')); + } else if (then = isThenable(result)) { + then.call(result, resolve, reject); + } else resolve(result); + } else reject(value); + } catch (e) { + if (domain && !exited) domain.exit(); + reject(e); + } + }; + while (chain.length > i) run(chain[i++]); // variable length - can't use forEach + promise._c = []; + promise._n = false; + if (isReject && !promise._h) onUnhandled(promise); + }); +}; +var onUnhandled = function (promise) { + task.call(global, function () { + var value = promise._v; + var unhandled = isUnhandled(promise); + var result, handler, console; + if (unhandled) { + result = perform(function () { + if (isNode) { + process.emit('unhandledRejection', value, promise); + } else if (handler = global.onunhandledrejection) { + handler({ promise: promise, reason: value }); + } else if ((console = global.console) && console.error) { + console.error('Unhandled promise rejection', value); + } + }); + // Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should + promise._h = isNode || isUnhandled(promise) ? 2 : 1; + } promise._a = undefined; + if (unhandled && result.e) throw result.v; + }); +}; +var isUnhandled = function (promise) { + return promise._h !== 1 && (promise._a || promise._c).length === 0; +}; +var onHandleUnhandled = function (promise) { + task.call(global, function () { + var handler; + if (isNode) { + process.emit('rejectionHandled', promise); + } else if (handler = global.onrejectionhandled) { + handler({ promise: promise, reason: promise._v }); + } + }); +}; +var $reject = function (value) { + var promise = this; + if (promise._d) return; + promise._d = true; + promise = promise._w || promise; // unwrap + promise._v = value; + promise._s = 2; + if (!promise._a) promise._a = promise._c.slice(); + notify(promise, true); +}; +var $resolve = function (value) { + var promise = this; + var then; + if (promise._d) return; + promise._d = true; + promise = promise._w || promise; // unwrap + try { + if (promise === value) throw TypeError("Promise can't be resolved itself"); + if (then = isThenable(value)) { + microtask(function () { + var wrapper = { _w: promise, _d: false }; // wrap + try { + then.call(value, ctx($resolve, wrapper, 1), ctx($reject, wrapper, 1)); + } catch (e) { + $reject.call(wrapper, e); + } + }); + } else { + promise._v = value; + promise._s = 1; + notify(promise, false); + } + } catch (e) { + $reject.call({ _w: promise, _d: false }, e); // wrap + } +}; + +// constructor polyfill +if (!USE_NATIVE) { + // 25.4.3.1 Promise(executor) + $Promise = function Promise(executor) { + anInstance(this, $Promise, PROMISE, '_h'); + aFunction(executor); + Internal.call(this); + try { + executor(ctx($resolve, this, 1), ctx($reject, this, 1)); + } catch (err) { + $reject.call(this, err); + } + }; + // eslint-disable-next-line no-unused-vars + Internal = function Promise(executor) { + this._c = []; // <- awaiting reactions + this._a = undefined; // <- checked in isUnhandled reactions + this._s = 0; // <- state + this._d = false; // <- done + this._v = undefined; // <- value + this._h = 0; // <- rejection state, 0 - default, 1 - handled, 2 - unhandled + this._n = false; // <- notify + }; + Internal.prototype = require('./_redefine-all')($Promise.prototype, { + // 25.4.5.3 Promise.prototype.then(onFulfilled, onRejected) + then: function then(onFulfilled, onRejected) { + var reaction = newPromiseCapability(speciesConstructor(this, $Promise)); + reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true; + reaction.fail = typeof onRejected == 'function' && onRejected; + reaction.domain = isNode ? process.domain : undefined; + this._c.push(reaction); + if (this._a) this._a.push(reaction); + if (this._s) notify(this, false); + return reaction.promise; + }, + // 25.4.5.1 Promise.prototype.catch(onRejected) + 'catch': function (onRejected) { + return this.then(undefined, onRejected); + } + }); + OwnPromiseCapability = function () { + var promise = new Internal(); + this.promise = promise; + this.resolve = ctx($resolve, promise, 1); + this.reject = ctx($reject, promise, 1); + }; + newPromiseCapabilityModule.f = newPromiseCapability = function (C) { + return C === $Promise || C === Wrapper + ? new OwnPromiseCapability(C) + : newGenericPromiseCapability(C); + }; +} + +$export($export.G + $export.W + $export.F * !USE_NATIVE, { Promise: $Promise }); +require('./_set-to-string-tag')($Promise, PROMISE); +require('./_set-species')(PROMISE); +Wrapper = require('./_core')[PROMISE]; + +// statics +$export($export.S + $export.F * !USE_NATIVE, PROMISE, { + // 25.4.4.5 Promise.reject(r) + reject: function reject(r) { + var capability = newPromiseCapability(this); + var $$reject = capability.reject; + $$reject(r); + return capability.promise; + } +}); +$export($export.S + $export.F * (LIBRARY || !USE_NATIVE), PROMISE, { + // 25.4.4.6 Promise.resolve(x) + resolve: function resolve(x) { + return promiseResolve(LIBRARY && this === Wrapper ? $Promise : this, x); + } +}); +$export($export.S + $export.F * !(USE_NATIVE && require('./_iter-detect')(function (iter) { + $Promise.all(iter)['catch'](empty); +})), PROMISE, { + // 25.4.4.1 Promise.all(iterable) + all: function all(iterable) { + var C = this; + var capability = newPromiseCapability(C); + var resolve = capability.resolve; + var reject = capability.reject; + var result = perform(function () { + var values = []; + var index = 0; + var remaining = 1; + forOf(iterable, false, function (promise) { + var $index = index++; + var alreadyCalled = false; + values.push(undefined); + remaining++; + C.resolve(promise).then(function (value) { + if (alreadyCalled) return; + alreadyCalled = true; + values[$index] = value; + --remaining || resolve(values); + }, reject); + }); + --remaining || resolve(values); + }); + if (result.e) reject(result.v); + return capability.promise; + }, + // 25.4.4.4 Promise.race(iterable) + race: function race(iterable) { + var C = this; + var capability = newPromiseCapability(C); + var reject = capability.reject; + var result = perform(function () { + forOf(iterable, false, function (promise) { + C.resolve(promise).then(capability.resolve, reject); + }); + }); + if (result.e) reject(result.v); + return capability.promise; + } +}); + +},{"./_a-function":25,"./_an-instance":27,"./_classof":30,"./_core":32,"./_ctx":33,"./_export":39,"./_for-of":41,"./_global":42,"./_is-object":51,"./_iter-detect":55,"./_library":58,"./_microtask":60,"./_new-promise-capability":61,"./_perform":74,"./_promise-resolve":75,"./_redefine-all":77,"./_set-species":80,"./_set-to-string-tag":81,"./_species-constructor":84,"./_task":86,"./_user-agent":94,"./_wks":97}],107:[function(require,module,exports){ +'use strict'; +var $at = require('./_string-at')(true); + +// 21.1.3.27 String.prototype[@@iterator]() +require('./_iter-define')(String, 'String', function (iterated) { + this._t = String(iterated); // target + this._i = 0; // next index +// 21.1.5.2.1 %StringIteratorPrototype%.next() +}, function () { + var O = this._t; + var index = this._i; + var point; + if (index >= O.length) return { value: undefined, done: true }; + point = $at(O, index); + this._i += point.length; + return { value: point, done: false }; +}); + +},{"./_iter-define":54,"./_string-at":85}],108:[function(require,module,exports){ +'use strict'; +// ECMAScript 6 symbols shim +var global = require('./_global'); +var has = require('./_has'); +var DESCRIPTORS = require('./_descriptors'); +var $export = require('./_export'); +var redefine = require('./_redefine'); +var META = require('./_meta').KEY; +var $fails = require('./_fails'); +var shared = require('./_shared'); +var setToStringTag = require('./_set-to-string-tag'); +var uid = require('./_uid'); +var wks = require('./_wks'); +var wksExt = require('./_wks-ext'); +var wksDefine = require('./_wks-define'); +var enumKeys = require('./_enum-keys'); +var isArray = require('./_is-array'); +var anObject = require('./_an-object'); +var isObject = require('./_is-object'); +var toIObject = require('./_to-iobject'); +var toPrimitive = require('./_to-primitive'); +var createDesc = require('./_property-desc'); +var _create = require('./_object-create'); +var gOPNExt = require('./_object-gopn-ext'); +var $GOPD = require('./_object-gopd'); +var $DP = require('./_object-dp'); +var $keys = require('./_object-keys'); +var gOPD = $GOPD.f; +var dP = $DP.f; +var gOPN = gOPNExt.f; +var $Symbol = global.Symbol; +var $JSON = global.JSON; +var _stringify = $JSON && $JSON.stringify; +var PROTOTYPE = 'prototype'; +var HIDDEN = wks('_hidden'); +var TO_PRIMITIVE = wks('toPrimitive'); +var isEnum = {}.propertyIsEnumerable; +var SymbolRegistry = shared('symbol-registry'); +var AllSymbols = shared('symbols'); +var OPSymbols = shared('op-symbols'); +var ObjectProto = Object[PROTOTYPE]; +var USE_NATIVE = typeof $Symbol == 'function'; +var QObject = global.QObject; +// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173 +var setter = !QObject || !QObject[PROTOTYPE] || !QObject[PROTOTYPE].findChild; + +// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687 +var setSymbolDesc = DESCRIPTORS && $fails(function () { + return _create(dP({}, 'a', { + get: function () { return dP(this, 'a', { value: 7 }).a; } + })).a != 7; +}) ? function (it, key, D) { + var protoDesc = gOPD(ObjectProto, key); + if (protoDesc) delete ObjectProto[key]; + dP(it, key, D); + if (protoDesc && it !== ObjectProto) dP(ObjectProto, key, protoDesc); +} : dP; + +var wrap = function (tag) { + var sym = AllSymbols[tag] = _create($Symbol[PROTOTYPE]); + sym._k = tag; + return sym; +}; + +var isSymbol = USE_NATIVE && typeof $Symbol.iterator == 'symbol' ? function (it) { + return typeof it == 'symbol'; +} : function (it) { + return it instanceof $Symbol; +}; + +var $defineProperty = function defineProperty(it, key, D) { + if (it === ObjectProto) $defineProperty(OPSymbols, key, D); + anObject(it); + key = toPrimitive(key, true); + anObject(D); + if (has(AllSymbols, key)) { + if (!D.enumerable) { + if (!has(it, HIDDEN)) dP(it, HIDDEN, createDesc(1, {})); + it[HIDDEN][key] = true; + } else { + if (has(it, HIDDEN) && it[HIDDEN][key]) it[HIDDEN][key] = false; + D = _create(D, { enumerable: createDesc(0, false) }); + } return setSymbolDesc(it, key, D); + } return dP(it, key, D); +}; +var $defineProperties = function defineProperties(it, P) { + anObject(it); + var keys = enumKeys(P = toIObject(P)); + var i = 0; + var l = keys.length; + var key; + while (l > i) $defineProperty(it, key = keys[i++], P[key]); + return it; +}; +var $create = function create(it, P) { + return P === undefined ? _create(it) : $defineProperties(_create(it), P); +}; +var $propertyIsEnumerable = function propertyIsEnumerable(key) { + var E = isEnum.call(this, key = toPrimitive(key, true)); + if (this === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return false; + return E || !has(this, key) || !has(AllSymbols, key) || has(this, HIDDEN) && this[HIDDEN][key] ? E : true; +}; +var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(it, key) { + it = toIObject(it); + key = toPrimitive(key, true); + if (it === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return; + var D = gOPD(it, key); + if (D && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) D.enumerable = true; + return D; +}; +var $getOwnPropertyNames = function getOwnPropertyNames(it) { + var names = gOPN(toIObject(it)); + var result = []; + var i = 0; + var key; + while (names.length > i) { + if (!has(AllSymbols, key = names[i++]) && key != HIDDEN && key != META) result.push(key); + } return result; +}; +var $getOwnPropertySymbols = function getOwnPropertySymbols(it) { + var IS_OP = it === ObjectProto; + var names = gOPN(IS_OP ? OPSymbols : toIObject(it)); + var result = []; + var i = 0; + var key; + while (names.length > i) { + if (has(AllSymbols, key = names[i++]) && (IS_OP ? has(ObjectProto, key) : true)) result.push(AllSymbols[key]); + } return result; +}; + +// 19.4.1.1 Symbol([description]) +if (!USE_NATIVE) { + $Symbol = function Symbol() { + if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor!'); + var tag = uid(arguments.length > 0 ? arguments[0] : undefined); + var $set = function (value) { + if (this === ObjectProto) $set.call(OPSymbols, value); + if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false; + setSymbolDesc(this, tag, createDesc(1, value)); + }; + if (DESCRIPTORS && setter) setSymbolDesc(ObjectProto, tag, { configurable: true, set: $set }); + return wrap(tag); + }; + redefine($Symbol[PROTOTYPE], 'toString', function toString() { + return this._k; + }); + + $GOPD.f = $getOwnPropertyDescriptor; + $DP.f = $defineProperty; + require('./_object-gopn').f = gOPNExt.f = $getOwnPropertyNames; + require('./_object-pie').f = $propertyIsEnumerable; + require('./_object-gops').f = $getOwnPropertySymbols; + + if (DESCRIPTORS && !require('./_library')) { + redefine(ObjectProto, 'propertyIsEnumerable', $propertyIsEnumerable, true); + } + + wksExt.f = function (name) { + return wrap(wks(name)); + }; +} + +$export($export.G + $export.W + $export.F * !USE_NATIVE, { Symbol: $Symbol }); + +for (var es6Symbols = ( + // 19.4.2.2, 19.4.2.3, 19.4.2.4, 19.4.2.6, 19.4.2.8, 19.4.2.9, 19.4.2.10, 19.4.2.11, 19.4.2.12, 19.4.2.13, 19.4.2.14 + 'hasInstance,isConcatSpreadable,iterator,match,replace,search,species,split,toPrimitive,toStringTag,unscopables' +).split(','), j = 0; es6Symbols.length > j;)wks(es6Symbols[j++]); + +for (var wellKnownSymbols = $keys(wks.store), k = 0; wellKnownSymbols.length > k;) wksDefine(wellKnownSymbols[k++]); + +$export($export.S + $export.F * !USE_NATIVE, 'Symbol', { + // 19.4.2.1 Symbol.for(key) + 'for': function (key) { + return has(SymbolRegistry, key += '') + ? SymbolRegistry[key] + : SymbolRegistry[key] = $Symbol(key); + }, + // 19.4.2.5 Symbol.keyFor(sym) + keyFor: function keyFor(sym) { + if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol!'); + for (var key in SymbolRegistry) if (SymbolRegistry[key] === sym) return key; + }, + useSetter: function () { setter = true; }, + useSimple: function () { setter = false; } +}); + +$export($export.S + $export.F * !USE_NATIVE, 'Object', { + // 19.1.2.2 Object.create(O [, Properties]) + create: $create, + // 19.1.2.4 Object.defineProperty(O, P, Attributes) + defineProperty: $defineProperty, + // 19.1.2.3 Object.defineProperties(O, Properties) + defineProperties: $defineProperties, + // 19.1.2.6 Object.getOwnPropertyDescriptor(O, P) + getOwnPropertyDescriptor: $getOwnPropertyDescriptor, + // 19.1.2.7 Object.getOwnPropertyNames(O) + getOwnPropertyNames: $getOwnPropertyNames, + // 19.1.2.8 Object.getOwnPropertySymbols(O) + getOwnPropertySymbols: $getOwnPropertySymbols +}); + +// 24.3.2 JSON.stringify(value [, replacer [, space]]) +$JSON && $export($export.S + $export.F * (!USE_NATIVE || $fails(function () { + var S = $Symbol(); + // MS Edge converts symbol values to JSON as {} + // WebKit converts symbol values to JSON as null + // V8 throws on boxed symbols + return _stringify([S]) != '[null]' || _stringify({ a: S }) != '{}' || _stringify(Object(S)) != '{}'; +})), 'JSON', { + stringify: function stringify(it) { + var args = [it]; + var i = 1; + var replacer, $replacer; + while (arguments.length > i) args.push(arguments[i++]); + $replacer = replacer = args[1]; + if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined + if (!isArray(replacer)) replacer = function (key, value) { + if (typeof $replacer == 'function') value = $replacer.call(this, key, value); + if (!isSymbol(value)) return value; + }; + args[1] = replacer; + return _stringify.apply($JSON, args); + } +}); + +// 19.4.3.4 Symbol.prototype[@@toPrimitive](hint) +$Symbol[PROTOTYPE][TO_PRIMITIVE] || require('./_hide')($Symbol[PROTOTYPE], TO_PRIMITIVE, $Symbol[PROTOTYPE].valueOf); +// 19.4.3.5 Symbol.prototype[@@toStringTag] +setToStringTag($Symbol, 'Symbol'); +// 20.2.1.9 Math[@@toStringTag] +setToStringTag(Math, 'Math', true); +// 24.3.3 JSON[@@toStringTag] +setToStringTag(global.JSON, 'JSON', true); + +},{"./_an-object":28,"./_descriptors":35,"./_enum-keys":38,"./_export":39,"./_fails":40,"./_global":42,"./_has":43,"./_hide":44,"./_is-array":50,"./_is-object":51,"./_library":58,"./_meta":59,"./_object-create":62,"./_object-dp":63,"./_object-gopd":65,"./_object-gopn":67,"./_object-gopn-ext":66,"./_object-gops":68,"./_object-keys":71,"./_object-pie":72,"./_property-desc":76,"./_redefine":78,"./_set-to-string-tag":81,"./_shared":83,"./_to-iobject":89,"./_to-primitive":92,"./_uid":93,"./_wks":97,"./_wks-define":95,"./_wks-ext":96}],109:[function(require,module,exports){ +// https://github.com/tc39/proposal-promise-finally +'use strict'; +var $export = require('./_export'); +var core = require('./_core'); +var global = require('./_global'); +var speciesConstructor = require('./_species-constructor'); +var promiseResolve = require('./_promise-resolve'); + +$export($export.P + $export.R, 'Promise', { 'finally': function (onFinally) { + var C = speciesConstructor(this, core.Promise || global.Promise); + var isFunction = typeof onFinally == 'function'; + return this.then( + isFunction ? function (x) { + return promiseResolve(C, onFinally()).then(function () { return x; }); + } : onFinally, + isFunction ? function (e) { + return promiseResolve(C, onFinally()).then(function () { throw e; }); + } : onFinally + ); +} }); + +},{"./_core":32,"./_export":39,"./_global":42,"./_promise-resolve":75,"./_species-constructor":84}],110:[function(require,module,exports){ +'use strict'; +// https://github.com/tc39/proposal-promise-try +var $export = require('./_export'); +var newPromiseCapability = require('./_new-promise-capability'); +var perform = require('./_perform'); + +$export($export.S, 'Promise', { 'try': function (callbackfn) { + var promiseCapability = newPromiseCapability.f(this); + var result = perform(callbackfn); + (result.e ? promiseCapability.reject : promiseCapability.resolve)(result.v); + return promiseCapability.promise; +} }); + +},{"./_export":39,"./_new-promise-capability":61,"./_perform":74}],111:[function(require,module,exports){ +require('./_wks-define')('asyncIterator'); + +},{"./_wks-define":95}],112:[function(require,module,exports){ +require('./_wks-define')('observable'); + +},{"./_wks-define":95}],113:[function(require,module,exports){ +require('./es6.array.iterator'); +var global = require('./_global'); +var hide = require('./_hide'); +var Iterators = require('./_iterators'); +var TO_STRING_TAG = require('./_wks')('toStringTag'); + +var DOMIterables = ('CSSRuleList,CSSStyleDeclaration,CSSValueList,ClientRectList,DOMRectList,DOMStringList,' + + 'DOMTokenList,DataTransferItemList,FileList,HTMLAllCollection,HTMLCollection,HTMLFormElement,HTMLSelectElement,' + + 'MediaList,MimeTypeArray,NamedNodeMap,NodeList,PaintRequestList,Plugin,PluginArray,SVGLengthList,SVGNumberList,' + + 'SVGPathSegList,SVGPointList,SVGStringList,SVGTransformList,SourceBufferList,StyleSheetList,TextTrackCueList,' + + 'TextTrackList,TouchList').split(','); + +for (var i = 0; i < DOMIterables.length; i++) { + var NAME = DOMIterables[i]; + var Collection = global[NAME]; + var proto = Collection && Collection.prototype; + if (proto && !proto[TO_STRING_TAG]) hide(proto, TO_STRING_TAG, NAME); + Iterators[NAME] = Iterators.Array; +} + +},{"./_global":42,"./_hide":44,"./_iterators":57,"./_wks":97,"./es6.array.iterator":99}],114:[function(require,module,exports){ +/** + * Copyright (c) 2014-present, Facebook, Inc. + * + * This source code is licensed under the MIT license found in the + * LICENSE file in the root directory of this source tree. + */ + +// This method of obtaining a reference to the global object needs to be +// kept identical to the way it is obtained in runtime.js +var g = (function() { return this })() || Function("return this")(); + +// Use `getOwnPropertyNames` because not all browsers support calling +// `hasOwnProperty` on the global `self` object in a worker. See #183. +var hadRuntime = g.regeneratorRuntime && + Object.getOwnPropertyNames(g).indexOf("regeneratorRuntime") >= 0; + +// Save the old regeneratorRuntime in case it needs to be restored later. +var oldRuntime = hadRuntime && g.regeneratorRuntime; + +// Force reevalutation of runtime.js. +g.regeneratorRuntime = undefined; + +module.exports = require("./runtime"); + +if (hadRuntime) { + // Restore the original runtime. + g.regeneratorRuntime = oldRuntime; +} else { + // Remove the global property added by runtime.js. + try { + delete g.regeneratorRuntime; + } catch(e) { + g.regeneratorRuntime = undefined; + } +} + +},{"./runtime":115}],115:[function(require,module,exports){ +/** + * Copyright (c) 2014-present, Facebook, Inc. + * + * This source code is licensed under the MIT license found in the + * LICENSE file in the root directory of this source tree. + */ + +!(function(global) { + "use strict"; + + var Op = Object.prototype; + var hasOwn = Op.hasOwnProperty; + var undefined; // More compressible than void 0. + var $Symbol = typeof Symbol === "function" ? Symbol : {}; + var iteratorSymbol = $Symbol.iterator || "@@iterator"; + var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator"; + var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag"; + + var inModule = typeof module === "object"; + var runtime = global.regeneratorRuntime; + if (runtime) { + if (inModule) { + // If regeneratorRuntime is defined globally and we're in a module, + // make the exports object identical to regeneratorRuntime. + module.exports = runtime; + } + // Don't bother evaluating the rest of this file if the runtime was + // already defined globally. + return; + } + + // Define the runtime globally (as expected by generated code) as either + // module.exports (if we're in a module) or a new, empty object. + runtime = global.regeneratorRuntime = inModule ? module.exports : {}; + + function wrap(innerFn, outerFn, self, tryLocsList) { + // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator. + var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator; + var generator = Object.create(protoGenerator.prototype); + var context = new Context(tryLocsList || []); + + // The ._invoke method unifies the implementations of the .next, + // .throw, and .return methods. + generator._invoke = makeInvokeMethod(innerFn, self, context); + + return generator; + } + runtime.wrap = wrap; + + // Try/catch helper to minimize deoptimizations. Returns a completion + // record like context.tryEntries[i].completion. This interface could + // have been (and was previously) designed to take a closure to be + // invoked without arguments, but in all the cases we care about we + // already have an existing method we want to call, so there's no need + // to create a new function object. We can even get away with assuming + // the method takes exactly one argument, since that happens to be true + // in every case, so we don't have to touch the arguments object. The + // only additional allocation required is the completion record, which + // has a stable shape and so hopefully should be cheap to allocate. + function tryCatch(fn, obj, arg) { + try { + return { type: "normal", arg: fn.call(obj, arg) }; + } catch (err) { + return { type: "throw", arg: err }; + } + } + + var GenStateSuspendedStart = "suspendedStart"; + var GenStateSuspendedYield = "suspendedYield"; + var GenStateExecuting = "executing"; + var GenStateCompleted = "completed"; + + // Returning this object from the innerFn has the same effect as + // breaking out of the dispatch switch statement. + var ContinueSentinel = {}; + + // Dummy constructor functions that we use as the .constructor and + // .constructor.prototype properties for functions that return Generator + // objects. For full spec compliance, you may wish to configure your + // minifier not to mangle the names of these two functions. + function Generator() {} + function GeneratorFunction() {} + function GeneratorFunctionPrototype() {} + + // This is a polyfill for %IteratorPrototype% for environments that + // don't natively support it. + var IteratorPrototype = {}; + IteratorPrototype[iteratorSymbol] = function () { + return this; + }; + + var getProto = Object.getPrototypeOf; + var NativeIteratorPrototype = getProto && getProto(getProto(values([]))); + if (NativeIteratorPrototype && + NativeIteratorPrototype !== Op && + hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) { + // This environment has a native %IteratorPrototype%; use it instead + // of the polyfill. + IteratorPrototype = NativeIteratorPrototype; + } + + var Gp = GeneratorFunctionPrototype.prototype = + Generator.prototype = Object.create(IteratorPrototype); + GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype; + GeneratorFunctionPrototype.constructor = GeneratorFunction; + GeneratorFunctionPrototype[toStringTagSymbol] = + GeneratorFunction.displayName = "GeneratorFunction"; + + // Helper for defining the .next, .throw, and .return methods of the + // Iterator interface in terms of a single ._invoke method. + function defineIteratorMethods(prototype) { + ["next", "throw", "return"].forEach(function(method) { + prototype[method] = function(arg) { + return this._invoke(method, arg); + }; + }); + } + + runtime.isGeneratorFunction = function(genFun) { + var ctor = typeof genFun === "function" && genFun.constructor; + return ctor + ? ctor === GeneratorFunction || + // For the native GeneratorFunction constructor, the best we can + // do is to check its .name property. + (ctor.displayName || ctor.name) === "GeneratorFunction" + : false; + }; + + runtime.mark = function(genFun) { + if (Object.setPrototypeOf) { + Object.setPrototypeOf(genFun, GeneratorFunctionPrototype); + } else { + genFun.__proto__ = GeneratorFunctionPrototype; + if (!(toStringTagSymbol in genFun)) { + genFun[toStringTagSymbol] = "GeneratorFunction"; + } + } + genFun.prototype = Object.create(Gp); + return genFun; + }; + + // Within the body of any async function, `await x` is transformed to + // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test + // `hasOwn.call(value, "__await")` to determine if the yielded value is + // meant to be awaited. + runtime.awrap = function(arg) { + return { __await: arg }; + }; + + function AsyncIterator(generator) { + function invoke(method, arg, resolve, reject) { + var record = tryCatch(generator[method], generator, arg); + if (record.type === "throw") { + reject(record.arg); + } else { + var result = record.arg; + var value = result.value; + if (value && + typeof value === "object" && + hasOwn.call(value, "__await")) { + return Promise.resolve(value.__await).then(function(value) { + invoke("next", value, resolve, reject); + }, function(err) { + invoke("throw", err, resolve, reject); + }); + } + + return Promise.resolve(value).then(function(unwrapped) { + // When a yielded Promise is resolved, its final value becomes + // the .value of the Promise<{value,done}> result for the + // current iteration. If the Promise is rejected, however, the + // result for this iteration will be rejected with the same + // reason. Note that rejections of yielded Promises are not + // thrown back into the generator function, as is the case + // when an awaited Promise is rejected. This difference in + // behavior between yield and await is important, because it + // allows the consumer to decide what to do with the yielded + // rejection (swallow it and continue, manually .throw it back + // into the generator, abandon iteration, whatever). With + // await, by contrast, there is no opportunity to examine the + // rejection reason outside the generator function, so the + // only option is to throw it from the await expression, and + // let the generator function handle the exception. + result.value = unwrapped; + resolve(result); + }, reject); + } + } + + var previousPromise; + + function enqueue(method, arg) { + function callInvokeWithMethodAndArg() { + return new Promise(function(resolve, reject) { + invoke(method, arg, resolve, reject); + }); + } + + return previousPromise = + // If enqueue has been called before, then we want to wait until + // all previous Promises have been resolved before calling invoke, + // so that results are always delivered in the correct order. If + // enqueue has not been called before, then it is important to + // call invoke immediately, without waiting on a callback to fire, + // so that the async generator function has the opportunity to do + // any necessary setup in a predictable way. This predictability + // is why the Promise constructor synchronously invokes its + // executor callback, and why async functions synchronously + // execute code before the first await. Since we implement simple + // async functions in terms of async generators, it is especially + // important to get this right, even though it requires care. + previousPromise ? previousPromise.then( + callInvokeWithMethodAndArg, + // Avoid propagating failures to Promises returned by later + // invocations of the iterator. + callInvokeWithMethodAndArg + ) : callInvokeWithMethodAndArg(); + } + + // Define the unified helper method that is used to implement .next, + // .throw, and .return (see defineIteratorMethods). + this._invoke = enqueue; + } + + defineIteratorMethods(AsyncIterator.prototype); + AsyncIterator.prototype[asyncIteratorSymbol] = function () { + return this; + }; + runtime.AsyncIterator = AsyncIterator; + + // Note that simple async functions are implemented on top of + // AsyncIterator objects; they just return a Promise for the value of + // the final result produced by the iterator. + runtime.async = function(innerFn, outerFn, self, tryLocsList) { + var iter = new AsyncIterator( + wrap(innerFn, outerFn, self, tryLocsList) + ); + + return runtime.isGeneratorFunction(outerFn) + ? iter // If outerFn is a generator, return the full iterator. + : iter.next().then(function(result) { + return result.done ? result.value : iter.next(); + }); + }; + + function makeInvokeMethod(innerFn, self, context) { + var state = GenStateSuspendedStart; + + return function invoke(method, arg) { + if (state === GenStateExecuting) { + throw new Error("Generator is already running"); + } + + if (state === GenStateCompleted) { + if (method === "throw") { + throw arg; + } + + // Be forgiving, per 25.3.3.3.3 of the spec: + // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume + return doneResult(); + } + + context.method = method; + context.arg = arg; + + while (true) { + var delegate = context.delegate; + if (delegate) { + var delegateResult = maybeInvokeDelegate(delegate, context); + if (delegateResult) { + if (delegateResult === ContinueSentinel) continue; + return delegateResult; + } + } + + if (context.method === "next") { + // Setting context._sent for legacy support of Babel's + // function.sent implementation. + context.sent = context._sent = context.arg; + + } else if (context.method === "throw") { + if (state === GenStateSuspendedStart) { + state = GenStateCompleted; + throw context.arg; + } + + context.dispatchException(context.arg); + + } else if (context.method === "return") { + context.abrupt("return", context.arg); + } + + state = GenStateExecuting; + + var record = tryCatch(innerFn, self, context); + if (record.type === "normal") { + // If an exception is thrown from innerFn, we leave state === + // GenStateExecuting and loop back for another invocation. + state = context.done + ? GenStateCompleted + : GenStateSuspendedYield; + + if (record.arg === ContinueSentinel) { + continue; + } + + return { + value: record.arg, + done: context.done + }; + + } else if (record.type === "throw") { + state = GenStateCompleted; + // Dispatch the exception by looping back around to the + // context.dispatchException(context.arg) call above. + context.method = "throw"; + context.arg = record.arg; + } + } + }; + } + + // Call delegate.iterator[context.method](context.arg) and handle the + // result, either by returning a { value, done } result from the + // delegate iterator, or by modifying context.method and context.arg, + // setting context.delegate to null, and returning the ContinueSentinel. + function maybeInvokeDelegate(delegate, context) { + var method = delegate.iterator[context.method]; + if (method === undefined) { + // A .throw or .return when the delegate iterator has no .throw + // method always terminates the yield* loop. + context.delegate = null; + + if (context.method === "throw") { + if (delegate.iterator.return) { + // If the delegate iterator has a return method, give it a + // chance to clean up. + context.method = "return"; + context.arg = undefined; + maybeInvokeDelegate(delegate, context); + + if (context.method === "throw") { + // If maybeInvokeDelegate(context) changed context.method from + // "return" to "throw", let that override the TypeError below. + return ContinueSentinel; + } + } + + context.method = "throw"; + context.arg = new TypeError( + "The iterator does not provide a 'throw' method"); + } + + return ContinueSentinel; + } + + var record = tryCatch(method, delegate.iterator, context.arg); + + if (record.type === "throw") { + context.method = "throw"; + context.arg = record.arg; + context.delegate = null; + return ContinueSentinel; + } + + var info = record.arg; + + if (! info) { + context.method = "throw"; + context.arg = new TypeError("iterator result is not an object"); + context.delegate = null; + return ContinueSentinel; + } + + if (info.done) { + // Assign the result of the finished delegate to the temporary + // variable specified by delegate.resultName (see delegateYield). + context[delegate.resultName] = info.value; + + // Resume execution at the desired location (see delegateYield). + context.next = delegate.nextLoc; + + // If context.method was "throw" but the delegate handled the + // exception, let the outer generator proceed normally. If + // context.method was "next", forget context.arg since it has been + // "consumed" by the delegate iterator. If context.method was + // "return", allow the original .return call to continue in the + // outer generator. + if (context.method !== "return") { + context.method = "next"; + context.arg = undefined; + } + + } else { + // Re-yield the result returned by the delegate method. + return info; + } + + // The delegate iterator is finished, so forget it and continue with + // the outer generator. + context.delegate = null; + return ContinueSentinel; + } + + // Define Generator.prototype.{next,throw,return} in terms of the + // unified ._invoke helper method. + defineIteratorMethods(Gp); + + Gp[toStringTagSymbol] = "Generator"; + + // A Generator should always return itself as the iterator object when the + // @@iterator function is called on it. Some browsers' implementations of the + // iterator prototype chain incorrectly implement this, causing the Generator + // object to not be returned from this call. This ensures that doesn't happen. + // See https://github.com/facebook/regenerator/issues/274 for more details. + Gp[iteratorSymbol] = function() { + return this; + }; + + Gp.toString = function() { + return "[object Generator]"; + }; + + function pushTryEntry(locs) { + var entry = { tryLoc: locs[0] }; + + if (1 in locs) { + entry.catchLoc = locs[1]; + } + + if (2 in locs) { + entry.finallyLoc = locs[2]; + entry.afterLoc = locs[3]; + } + + this.tryEntries.push(entry); + } + + function resetTryEntry(entry) { + var record = entry.completion || {}; + record.type = "normal"; + delete record.arg; + entry.completion = record; + } + + function Context(tryLocsList) { + // The root entry object (effectively a try statement without a catch + // or a finally block) gives us a place to store values thrown from + // locations where there is no enclosing try statement. + this.tryEntries = [{ tryLoc: "root" }]; + tryLocsList.forEach(pushTryEntry, this); + this.reset(true); + } + + runtime.keys = function(object) { + var keys = []; + for (var key in object) { + keys.push(key); + } + keys.reverse(); + + // Rather than returning an object with a next method, we keep + // things simple and return the next function itself. + return function next() { + while (keys.length) { + var key = keys.pop(); + if (key in object) { + next.value = key; + next.done = false; + return next; + } + } + + // To avoid creating an additional object, we just hang the .value + // and .done properties off the next function object itself. This + // also ensures that the minifier will not anonymize the function. + next.done = true; + return next; + }; + }; + + function values(iterable) { + if (iterable) { + var iteratorMethod = iterable[iteratorSymbol]; + if (iteratorMethod) { + return iteratorMethod.call(iterable); + } + + if (typeof iterable.next === "function") { + return iterable; + } + + if (!isNaN(iterable.length)) { + var i = -1, next = function next() { + while (++i < iterable.length) { + if (hasOwn.call(iterable, i)) { + next.value = iterable[i]; + next.done = false; + return next; + } + } + + next.value = undefined; + next.done = true; + + return next; + }; + + return next.next = next; + } + } + + // Return an iterator with no values. + return { next: doneResult }; + } + runtime.values = values; + + function doneResult() { + return { value: undefined, done: true }; + } + + Context.prototype = { + constructor: Context, + + reset: function(skipTempReset) { + this.prev = 0; + this.next = 0; + // Resetting context._sent for legacy support of Babel's + // function.sent implementation. + this.sent = this._sent = undefined; + this.done = false; + this.delegate = null; + + this.method = "next"; + this.arg = undefined; + + this.tryEntries.forEach(resetTryEntry); + + if (!skipTempReset) { + for (var name in this) { + // Not sure about the optimal order of these conditions: + if (name.charAt(0) === "t" && + hasOwn.call(this, name) && + !isNaN(+name.slice(1))) { + this[name] = undefined; + } + } + } + }, + + stop: function() { + this.done = true; + + var rootEntry = this.tryEntries[0]; + var rootRecord = rootEntry.completion; + if (rootRecord.type === "throw") { + throw rootRecord.arg; + } + + return this.rval; + }, + + dispatchException: function(exception) { + if (this.done) { + throw exception; + } + + var context = this; + function handle(loc, caught) { + record.type = "throw"; + record.arg = exception; + context.next = loc; + + if (caught) { + // If the dispatched exception was caught by a catch block, + // then let that catch block handle the exception normally. + context.method = "next"; + context.arg = undefined; + } + + return !! caught; + } + + for (var i = this.tryEntries.length - 1; i >= 0; --i) { + var entry = this.tryEntries[i]; + var record = entry.completion; + + if (entry.tryLoc === "root") { + // Exception thrown outside of any try block that could handle + // it, so set the completion value of the entire function to + // throw the exception. + return handle("end"); + } + + if (entry.tryLoc <= this.prev) { + var hasCatch = hasOwn.call(entry, "catchLoc"); + var hasFinally = hasOwn.call(entry, "finallyLoc"); + + if (hasCatch && hasFinally) { + if (this.prev < entry.catchLoc) { + return handle(entry.catchLoc, true); + } else if (this.prev < entry.finallyLoc) { + return handle(entry.finallyLoc); + } + + } else if (hasCatch) { + if (this.prev < entry.catchLoc) { + return handle(entry.catchLoc, true); + } + + } else if (hasFinally) { + if (this.prev < entry.finallyLoc) { + return handle(entry.finallyLoc); + } + + } else { + throw new Error("try statement without catch or finally"); + } + } + } + }, + + abrupt: function(type, arg) { + for (var i = this.tryEntries.length - 1; i >= 0; --i) { + var entry = this.tryEntries[i]; + if (entry.tryLoc <= this.prev && + hasOwn.call(entry, "finallyLoc") && + this.prev < entry.finallyLoc) { + var finallyEntry = entry; + break; + } + } + + if (finallyEntry && + (type === "break" || + type === "continue") && + finallyEntry.tryLoc <= arg && + arg <= finallyEntry.finallyLoc) { + // Ignore the finally entry if control is not jumping to a + // location outside the try/catch block. + finallyEntry = null; + } + + var record = finallyEntry ? finallyEntry.completion : {}; + record.type = type; + record.arg = arg; + + if (finallyEntry) { + this.method = "next"; + this.next = finallyEntry.finallyLoc; + return ContinueSentinel; + } + + return this.complete(record); + }, + + complete: function(record, afterLoc) { + if (record.type === "throw") { + throw record.arg; + } + + if (record.type === "break" || + record.type === "continue") { + this.next = record.arg; + } else if (record.type === "return") { + this.rval = this.arg = record.arg; + this.method = "return"; + this.next = "end"; + } else if (record.type === "normal" && afterLoc) { + this.next = afterLoc; + } + + return ContinueSentinel; + }, + + finish: function(finallyLoc) { + for (var i = this.tryEntries.length - 1; i >= 0; --i) { + var entry = this.tryEntries[i]; + if (entry.finallyLoc === finallyLoc) { + this.complete(entry.completion, entry.afterLoc); + resetTryEntry(entry); + return ContinueSentinel; + } + } + }, + + "catch": function(tryLoc) { + for (var i = this.tryEntries.length - 1; i >= 0; --i) { + var entry = this.tryEntries[i]; + if (entry.tryLoc === tryLoc) { + var record = entry.completion; + if (record.type === "throw") { + var thrown = record.arg; + resetTryEntry(entry); + } + return thrown; + } + } + + // The context.catch method must only be called with a location + // argument that corresponds to a known catch block. + throw new Error("illegal catch attempt"); + }, + + delegateYield: function(iterable, resultName, nextLoc) { + this.delegate = { + iterator: values(iterable), + resultName: resultName, + nextLoc: nextLoc + }; + + if (this.method === "next") { + // Deliberately forget the last sent value so that we don't + // accidentally pass it on to the delegate. + this.arg = undefined; + } + + return ContinueSentinel; + } + }; +})( + // In sloppy mode, unbound `this` refers to the global object, fallback to + // Function constructor if we're in global strict mode. That is sadly a form + // of indirect eval which violates Content Security Policy. + (function() { return this })() || Function("return this")() +); + +},{}],116:[function(require,module,exports){ + /* eslint-env node */ +'use strict'; + +// SDP helpers. +var SDPUtils = {}; + +// Generate an alphanumeric identifier for cname or mids. +// TODO: use UUIDs instead? https://gist.github.com/jed/982883 +SDPUtils.generateIdentifier = function() { + return Math.random().toString(36).substr(2, 10); +}; + +// The RTCP CNAME used by all peerconnections from the same JS. +SDPUtils.localCName = SDPUtils.generateIdentifier(); + +// Splits SDP into lines, dealing with both CRLF and LF. +SDPUtils.splitLines = function(blob) { + return blob.trim().split('\n').map(function(line) { + return line.trim(); + }); +}; +// Splits SDP into sessionpart and mediasections. Ensures CRLF. +SDPUtils.splitSections = function(blob) { + var parts = blob.split('\nm='); + return parts.map(function(part, index) { + return (index > 0 ? 'm=' + part : part).trim() + '\r\n'; + }); +}; + +// Returns lines that start with a certain prefix. +SDPUtils.matchPrefix = function(blob, prefix) { + return SDPUtils.splitLines(blob).filter(function(line) { + return line.indexOf(prefix) === 0; + }); +}; + +// Parses an ICE candidate line. Sample input: +// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8 +// rport 55996" +SDPUtils.parseCandidate = function(line) { + var parts; + // Parse both variants. + if (line.indexOf('a=candidate:') === 0) { + parts = line.substring(12).split(' '); + } else { + parts = line.substring(10).split(' '); + } + + var candidate = { + foundation: parts[0], + component: parts[1], + protocol: parts[2].toLowerCase(), + priority: parseInt(parts[3], 10), + ip: parts[4], + port: parseInt(parts[5], 10), + // skip parts[6] == 'typ' + type: parts[7] + }; + + for (var i = 8; i < parts.length; i += 2) { + switch (parts[i]) { + case 'raddr': + candidate.relatedAddress = parts[i + 1]; + break; + case 'rport': + candidate.relatedPort = parseInt(parts[i + 1], 10); + break; + case 'tcptype': + candidate.tcpType = parts[i + 1]; + break; + default: // extension handling, in particular ufrag + candidate[parts[i]] = parts[i + 1]; + break; + } + } + return candidate; +}; + +// Translates a candidate object into SDP candidate attribute. +SDPUtils.writeCandidate = function(candidate) { + var sdp = []; + sdp.push(candidate.foundation); + sdp.push(candidate.component); + sdp.push(candidate.protocol.toUpperCase()); + sdp.push(candidate.priority); + sdp.push(candidate.ip); + sdp.push(candidate.port); + + var type = candidate.type; + sdp.push('typ'); + sdp.push(type); + if (type !== 'host' && candidate.relatedAddress && + candidate.relatedPort) { + sdp.push('raddr'); + sdp.push(candidate.relatedAddress); // was: relAddr + sdp.push('rport'); + sdp.push(candidate.relatedPort); // was: relPort + } + if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') { + sdp.push('tcptype'); + sdp.push(candidate.tcpType); + } + return 'candidate:' + sdp.join(' '); +}; + +// Parses an ice-options line, returns an array of option tags. +// a=ice-options:foo bar +SDPUtils.parseIceOptions = function(line) { + return line.substr(14).split(' '); +} + +// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input: +// a=rtpmap:111 opus/48000/2 +SDPUtils.parseRtpMap = function(line) { + var parts = line.substr(9).split(' '); + var parsed = { + payloadType: parseInt(parts.shift(), 10) // was: id + }; + + parts = parts[0].split('/'); + + parsed.name = parts[0]; + parsed.clockRate = parseInt(parts[1], 10); // was: clockrate + // was: channels + parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1; + return parsed; +}; + +// Generate an a=rtpmap line from RTCRtpCodecCapability or +// RTCRtpCodecParameters. +SDPUtils.writeRtpMap = function(codec) { + var pt = codec.payloadType; + if (codec.preferredPayloadType !== undefined) { + pt = codec.preferredPayloadType; + } + return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate + + (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\r\n'; +}; + +// Parses an a=extmap line (headerextension from RFC 5285). Sample input: +// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset +// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset +SDPUtils.parseExtmap = function(line) { + var parts = line.substr(9).split(' '); + return { + id: parseInt(parts[0], 10), + direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv', + uri: parts[1] + }; +}; + +// Generates a=extmap line from RTCRtpHeaderExtensionParameters or +// RTCRtpHeaderExtension. +SDPUtils.writeExtmap = function(headerExtension) { + return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) + + (headerExtension.direction && headerExtension.direction !== 'sendrecv' + ? '/' + headerExtension.direction + : '') + + ' ' + headerExtension.uri + '\r\n'; +}; + +// Parses an ftmp line, returns dictionary. Sample input: +// a=fmtp:96 vbr=on;cng=on +// Also deals with vbr=on; cng=on +SDPUtils.parseFmtp = function(line) { + var parsed = {}; + var kv; + var parts = line.substr(line.indexOf(' ') + 1).split(';'); + for (var j = 0; j < parts.length; j++) { + kv = parts[j].trim().split('='); + parsed[kv[0].trim()] = kv[1]; + } + return parsed; +}; + +// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters. +SDPUtils.writeFmtp = function(codec) { + var line = ''; + var pt = codec.payloadType; + if (codec.preferredPayloadType !== undefined) { + pt = codec.preferredPayloadType; + } + if (codec.parameters && Object.keys(codec.parameters).length) { + var params = []; + Object.keys(codec.parameters).forEach(function(param) { + params.push(param + '=' + codec.parameters[param]); + }); + line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n'; + } + return line; +}; + +// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input: +// a=rtcp-fb:98 nack rpsi +SDPUtils.parseRtcpFb = function(line) { + var parts = line.substr(line.indexOf(' ') + 1).split(' '); + return { + type: parts.shift(), + parameter: parts.join(' ') + }; +}; +// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters. +SDPUtils.writeRtcpFb = function(codec) { + var lines = ''; + var pt = codec.payloadType; + if (codec.preferredPayloadType !== undefined) { + pt = codec.preferredPayloadType; + } + if (codec.rtcpFeedback && codec.rtcpFeedback.length) { + // FIXME: special handling for trr-int? + codec.rtcpFeedback.forEach(function(fb) { + lines += 'a=rtcp-fb:' + pt + ' ' + fb.type + + (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') + + '\r\n'; + }); + } + return lines; +}; + +// Parses an RFC 5576 ssrc media attribute. Sample input: +// a=ssrc:3735928559 cname:something +SDPUtils.parseSsrcMedia = function(line) { + var sp = line.indexOf(' '); + var parts = { + ssrc: parseInt(line.substr(7, sp - 7), 10) + }; + var colon = line.indexOf(':', sp); + if (colon > -1) { + parts.attribute = line.substr(sp + 1, colon - sp - 1); + parts.value = line.substr(colon + 1); + } else { + parts.attribute = line.substr(sp + 1); + } + return parts; +}; + +// Extracts the MID (RFC 5888) from a media section. +// returns the MID or undefined if no mid line was found. +SDPUtils.getMid = function(mediaSection) { + var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0]; + if (mid) { + return mid.substr(6); + } +} + +SDPUtils.parseFingerprint = function(line) { + var parts = line.substr(14).split(' '); + return { + algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge. + value: parts[1] + }; +}; + +// Extracts DTLS parameters from SDP media section or sessionpart. +// FIXME: for consistency with other functions this should only +// get the fingerprint line as input. See also getIceParameters. +SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) { + var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, + 'a=fingerprint:'); + // Note: a=setup line is ignored since we use the 'auto' role. + // Note2: 'algorithm' is not case sensitive except in Edge. + return { + role: 'auto', + fingerprints: lines.map(SDPUtils.parseFingerprint) + }; +}; + +// Serializes DTLS parameters to SDP. +SDPUtils.writeDtlsParameters = function(params, setupType) { + var sdp = 'a=setup:' + setupType + '\r\n'; + params.fingerprints.forEach(function(fp) { + sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n'; + }); + return sdp; +}; +// Parses ICE information from SDP media section or sessionpart. +// FIXME: for consistency with other functions this should only +// get the ice-ufrag and ice-pwd lines as input. +SDPUtils.getIceParameters = function(mediaSection, sessionpart) { + var lines = SDPUtils.splitLines(mediaSection); + // Search in session part, too. + lines = lines.concat(SDPUtils.splitLines(sessionpart)); + var iceParameters = { + usernameFragment: lines.filter(function(line) { + return line.indexOf('a=ice-ufrag:') === 0; + })[0].substr(12), + password: lines.filter(function(line) { + return line.indexOf('a=ice-pwd:') === 0; + })[0].substr(10) + }; + return iceParameters; +}; + +// Serializes ICE parameters to SDP. +SDPUtils.writeIceParameters = function(params) { + return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' + + 'a=ice-pwd:' + params.password + '\r\n'; +}; + +// Parses the SDP media section and returns RTCRtpParameters. +SDPUtils.parseRtpParameters = function(mediaSection) { + var description = { + codecs: [], + headerExtensions: [], + fecMechanisms: [], + rtcp: [] + }; + var lines = SDPUtils.splitLines(mediaSection); + var mline = lines[0].split(' '); + for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..] + var pt = mline[i]; + var rtpmapline = SDPUtils.matchPrefix( + mediaSection, 'a=rtpmap:' + pt + ' ')[0]; + if (rtpmapline) { + var codec = SDPUtils.parseRtpMap(rtpmapline); + var fmtps = SDPUtils.matchPrefix( + mediaSection, 'a=fmtp:' + pt + ' '); + // Only the first a=fmtp: is considered. + codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {}; + codec.rtcpFeedback = SDPUtils.matchPrefix( + mediaSection, 'a=rtcp-fb:' + pt + ' ') + .map(SDPUtils.parseRtcpFb); + description.codecs.push(codec); + // parse FEC mechanisms from rtpmap lines. + switch (codec.name.toUpperCase()) { + case 'RED': + case 'ULPFEC': + description.fecMechanisms.push(codec.name.toUpperCase()); + break; + default: // only RED and ULPFEC are recognized as FEC mechanisms. + break; + } + } + } + SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) { + description.headerExtensions.push(SDPUtils.parseExtmap(line)); + }); + // FIXME: parse rtcp. + return description; +}; + +// Generates parts of the SDP media section describing the capabilities / +// parameters. +SDPUtils.writeRtpDescription = function(kind, caps) { + var sdp = ''; + + // Build the mline. + sdp += 'm=' + kind + ' '; + sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs. + sdp += ' UDP/TLS/RTP/SAVPF '; + sdp += caps.codecs.map(function(codec) { + if (codec.preferredPayloadType !== undefined) { + return codec.preferredPayloadType; + } + return codec.payloadType; + }).join(' ') + '\r\n'; + + sdp += 'c=IN IP4 0.0.0.0\r\n'; + sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n'; + + // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb. + caps.codecs.forEach(function(codec) { + sdp += SDPUtils.writeRtpMap(codec); + sdp += SDPUtils.writeFmtp(codec); + sdp += SDPUtils.writeRtcpFb(codec); + }); + var maxptime = 0; + caps.codecs.forEach(function(codec) { + if (codec.maxptime > maxptime) { + maxptime = codec.maxptime; + } + }); + if (maxptime > 0) { + sdp += 'a=maxptime:' + maxptime + '\r\n'; + } + sdp += 'a=rtcp-mux\r\n'; + + caps.headerExtensions.forEach(function(extension) { + sdp += SDPUtils.writeExtmap(extension); + }); + // FIXME: write fecMechanisms. + return sdp; +}; + +// Parses the SDP media section and returns an array of +// RTCRtpEncodingParameters. +SDPUtils.parseRtpEncodingParameters = function(mediaSection) { + var encodingParameters = []; + var description = SDPUtils.parseRtpParameters(mediaSection); + var hasRed = description.fecMechanisms.indexOf('RED') !== -1; + var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1; + + // filter a=ssrc:... cname:, ignore PlanB-msid + var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(parts) { + return parts.attribute === 'cname'; + }); + var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc; + var secondarySsrc; + + var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID') + .map(function(line) { + var parts = line.split(' '); + parts.shift(); + return parts.map(function(part) { + return parseInt(part, 10); + }); + }); + if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) { + secondarySsrc = flows[0][1]; + } + + description.codecs.forEach(function(codec) { + if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) { + var encParam = { + ssrc: primarySsrc, + codecPayloadType: parseInt(codec.parameters.apt, 10), + rtx: { + ssrc: secondarySsrc + } + }; + encodingParameters.push(encParam); + if (hasRed) { + encParam = JSON.parse(JSON.stringify(encParam)); + encParam.fec = { + ssrc: secondarySsrc, + mechanism: hasUlpfec ? 'red+ulpfec' : 'red' + }; + encodingParameters.push(encParam); + } + } + }); + if (encodingParameters.length === 0 && primarySsrc) { + encodingParameters.push({ + ssrc: primarySsrc + }); + } + + // we support both b=AS and b=TIAS but interpret AS as TIAS. + var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b='); + if (bandwidth.length) { + if (bandwidth[0].indexOf('b=TIAS:') === 0) { + bandwidth = parseInt(bandwidth[0].substr(7), 10); + } else if (bandwidth[0].indexOf('b=AS:') === 0) { + bandwidth = parseInt(bandwidth[0].substr(5), 10); + } + encodingParameters.forEach(function(params) { + params.maxBitrate = bandwidth; + }); + } + return encodingParameters; +}; + +// parses http://draft.ortc.org/#rtcrtcpparameters* +SDPUtils.parseRtcpParameters = function(mediaSection) { + var rtcpParameters = {}; + + var cname; + // Gets the first SSRC. Note that with RTX there might be multiple + // SSRCs. + var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(obj) { + return obj.attribute === 'cname'; + })[0]; + if (remoteSsrc) { + rtcpParameters.cname = remoteSsrc.value; + rtcpParameters.ssrc = remoteSsrc.ssrc; + } + + // Edge uses the compound attribute instead of reducedSize + // compound is !reducedSize + var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize'); + rtcpParameters.reducedSize = rsize.length > 0; + rtcpParameters.compound = rsize.length === 0; + + // parses the rtcp-mux attrіbute. + // Note that Edge does not support unmuxed RTCP. + var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux'); + rtcpParameters.mux = mux.length > 0; + + return rtcpParameters; +}; + +// parses either a=msid: or a=ssrc:... msid lines and returns +// the id of the MediaStream and MediaStreamTrack. +SDPUtils.parseMsid = function(mediaSection) { + var parts; + var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:'); + if (spec.length === 1) { + parts = spec[0].substr(7).split(' '); + return {stream: parts[0], track: parts[1]}; + } + var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(parts) { + return parts.attribute === 'msid'; + }); + if (planB.length > 0) { + parts = planB[0].value.split(' '); + return {stream: parts[0], track: parts[1]}; + } +}; + +SDPUtils.writeSessionBoilerplate = function() { + // FIXME: sess-id should be an NTP timestamp. + return 'v=0\r\n' + + 'o=thisisadapterortc 8169639915646943137 2 IN IP4 127.0.0.1\r\n' + + 's=-\r\n' + + 't=0 0\r\n'; +}; + +SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) { + var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); + + // Map ICE parameters (ufrag, pwd) to SDP. + sdp += SDPUtils.writeIceParameters( + transceiver.iceGatherer.getLocalParameters()); + + // Map DTLS parameters to SDP. + sdp += SDPUtils.writeDtlsParameters( + transceiver.dtlsTransport.getLocalParameters(), + type === 'offer' ? 'actpass' : 'active'); + + sdp += 'a=mid:' + transceiver.mid + '\r\n'; + + if (transceiver.direction) { + sdp += 'a=' + transceiver.direction + '\r\n'; + } else if (transceiver.rtpSender && transceiver.rtpReceiver) { + sdp += 'a=sendrecv\r\n'; + } else if (transceiver.rtpSender) { + sdp += 'a=sendonly\r\n'; + } else if (transceiver.rtpReceiver) { + sdp += 'a=recvonly\r\n'; + } else { + sdp += 'a=inactive\r\n'; + } + + if (transceiver.rtpSender) { + // spec. + var msid = 'msid:' + stream.id + ' ' + + transceiver.rtpSender.track.id + '\r\n'; + sdp += 'a=' + msid; + + // for Chrome. + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + + ' ' + msid; + if (transceiver.sendEncodingParameters[0].rtx) { + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + + ' ' + msid; + sdp += 'a=ssrc-group:FID ' + + transceiver.sendEncodingParameters[0].ssrc + ' ' + + transceiver.sendEncodingParameters[0].rtx.ssrc + + '\r\n'; + } + } + // FIXME: this should be written by writeRtpDescription. + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + + ' cname:' + SDPUtils.localCName + '\r\n'; + if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) { + sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + + ' cname:' + SDPUtils.localCName + '\r\n'; + } + return sdp; +}; + +// Gets the direction from the mediaSection or the sessionpart. +SDPUtils.getDirection = function(mediaSection, sessionpart) { + // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv. + var lines = SDPUtils.splitLines(mediaSection); + for (var i = 0; i < lines.length; i++) { + switch (lines[i]) { + case 'a=sendrecv': + case 'a=sendonly': + case 'a=recvonly': + case 'a=inactive': + return lines[i].substr(2); + default: + // FIXME: What should happen here? + } + } + if (sessionpart) { + return SDPUtils.getDirection(sessionpart); + } + return 'sendrecv'; +}; + +SDPUtils.getKind = function(mediaSection) { + var lines = SDPUtils.splitLines(mediaSection); + var mline = lines[0].split(' '); + return mline[0].substr(2); +}; + +SDPUtils.isRejected = function(mediaSection) { + return mediaSection.split(' ', 2)[1] === '0'; +}; + +// Expose public methods. +module.exports = SDPUtils; + +},{}],117:[function(require,module,exports){ +/** + * Convert array of 16 byte values to UUID string format of the form: + * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX + */ +var byteToHex = []; +for (var i = 0; i < 256; ++i) { + byteToHex[i] = (i + 0x100).toString(16).substr(1); +} + +function bytesToUuid(buf, offset) { + var i = offset || 0; + var bth = byteToHex; + // join used to fix memory issue caused by concatenation: https://bugs.chromium.org/p/v8/issues/detail?id=3175#c4 + return ([bth[buf[i++]], bth[buf[i++]], + bth[buf[i++]], bth[buf[i++]], '-', + bth[buf[i++]], bth[buf[i++]], '-', + bth[buf[i++]], bth[buf[i++]], '-', + bth[buf[i++]], bth[buf[i++]], '-', + bth[buf[i++]], bth[buf[i++]], + bth[buf[i++]], bth[buf[i++]], + bth[buf[i++]], bth[buf[i++]]]).join(''); +} + +module.exports = bytesToUuid; + +},{}],118:[function(require,module,exports){ +// Unique ID creation requires a high quality random # generator. In the +// browser this is a little complicated due to unknown quality of Math.random() +// and inconsistent support for the `crypto` API. We do the best we can via +// feature-detection + +// getRandomValues needs to be invoked in a context where "this" is a Crypto +// implementation. Also, find the complete implementation of crypto on IE11. +var getRandomValues = (typeof(crypto) != 'undefined' && crypto.getRandomValues && crypto.getRandomValues.bind(crypto)) || + (typeof(msCrypto) != 'undefined' && typeof window.msCrypto.getRandomValues == 'function' && msCrypto.getRandomValues.bind(msCrypto)); + +if (getRandomValues) { + // WHATWG crypto RNG - http://wiki.whatwg.org/wiki/Crypto + var rnds8 = new Uint8Array(16); // eslint-disable-line no-undef + + module.exports = function whatwgRNG() { + getRandomValues(rnds8); + return rnds8; + }; +} else { + // Math.random()-based (RNG) + // + // If all else fails, use Math.random(). It's fast, but is of unspecified + // quality. + var rnds = new Array(16); + + module.exports = function mathRNG() { + for (var i = 0, r; i < 16; i++) { + if ((i & 0x03) === 0) r = Math.random() * 0x100000000; + rnds[i] = r >>> ((i & 0x03) << 3) & 0xff; + } + + return rnds; + }; +} + +},{}],119:[function(require,module,exports){ +var rng = require('./lib/rng'); +var bytesToUuid = require('./lib/bytesToUuid'); + +function v4(options, buf, offset) { + var i = buf && offset || 0; + + if (typeof(options) == 'string') { + buf = options === 'binary' ? new Array(16) : null; + options = null; + } + options = options || {}; + + var rnds = options.random || (options.rng || rng)(); + + // Per 4.4, set bits for version and `clock_seq_hi_and_reserved` + rnds[6] = (rnds[6] & 0x0f) | 0x40; + rnds[8] = (rnds[8] & 0x3f) | 0x80; + + // Copy bytes to buffer, if provided + if (buf) { + for (var ii = 0; ii < 16; ++ii) { + buf[i + ii] = rnds[ii]; + } + } + + return buf || bytesToUuid(rnds); +} + +module.exports = v4; + +},{"./lib/bytesToUuid":117,"./lib/rng":118}],120:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ + +'use strict'; + +// Shimming starts here. +(function() { + // Utils. + var logging = require('./utils').log; + var browserDetails = require('./utils').browserDetails; + // Export to the adapter global object visible in the browser. + module.exports.browserDetails = browserDetails; + module.exports.extractVersion = require('./utils').extractVersion; + module.exports.disableLog = require('./utils').disableLog; + + // Uncomment the line below if you want logging to occur, including logging + // for the switch statement below. Can also be turned on in the browser via + // adapter.disableLog(false), but then logging from the switch statement below + // will not appear. + // require('./utils').disableLog(false); + + // Browser shims. + var chromeShim = require('./chrome/chrome_shim') || null; + var edgeShim = require('./edge/edge_shim') || null; + var firefoxShim = require('./firefox/firefox_shim') || null; + var safariShim = require('./safari/safari_shim') || null; + + // Shim browser if found. + switch (browserDetails.browser) { + case 'opera': // fallthrough as it uses chrome shims + case 'chrome': + if (!chromeShim || !chromeShim.shimPeerConnection) { + logging('Chrome shim is not included in this adapter release.'); + return; + } + logging('adapter.js shimming chrome.'); + // Export to the adapter global object visible in the browser. + module.exports.browserShim = chromeShim; + + chromeShim.shimGetUserMedia(); + chromeShim.shimMediaStream(); + chromeShim.shimSourceObject(); + chromeShim.shimPeerConnection(); + chromeShim.shimOnTrack(); + break; + case 'firefox': + if (!firefoxShim || !firefoxShim.shimPeerConnection) { + logging('Firefox shim is not included in this adapter release.'); + return; + } + logging('adapter.js shimming firefox.'); + // Export to the adapter global object visible in the browser. + module.exports.browserShim = firefoxShim; + + firefoxShim.shimGetUserMedia(); + firefoxShim.shimSourceObject(); + firefoxShim.shimPeerConnection(); + firefoxShim.shimOnTrack(); + break; + case 'edge': + if (!edgeShim || !edgeShim.shimPeerConnection) { + logging('MS edge shim is not included in this adapter release.'); + return; + } + logging('adapter.js shimming edge.'); + // Export to the adapter global object visible in the browser. + module.exports.browserShim = edgeShim; + + edgeShim.shimGetUserMedia(); + edgeShim.shimPeerConnection(); + break; + case 'safari': + if (!safariShim) { + logging('Safari shim is not included in this adapter release.'); + return; + } + logging('adapter.js shimming safari.'); + // Export to the adapter global object visible in the browser. + module.exports.browserShim = safariShim; + + safariShim.shimGetUserMedia(); + break; + default: + logging('Unsupported browser!'); + } +})(); + +},{"./chrome/chrome_shim":121,"./edge/edge_shim":123,"./firefox/firefox_shim":125,"./safari/safari_shim":127,"./utils":128}],121:[function(require,module,exports){ + +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; +var logging = require('../utils.js').log; +var browserDetails = require('../utils.js').browserDetails; + +var chromeShim = { + shimMediaStream: function() { + window.MediaStream = window.MediaStream || window.webkitMediaStream; + }, + + shimOnTrack: function() { + if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in + window.RTCPeerConnection.prototype)) { + Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', { + get: function() { + return this._ontrack; + }, + set: function(f) { + var self = this; + if (this._ontrack) { + this.removeEventListener('track', this._ontrack); + this.removeEventListener('addstream', this._ontrackpoly); + } + this.addEventListener('track', this._ontrack = f); + this.addEventListener('addstream', this._ontrackpoly = function(e) { + // onaddstream does not fire when a track is added to an existing + // stream. But stream.onaddtrack is implemented so we use that. + e.stream.addEventListener('addtrack', function(te) { + var event = new Event('track'); + event.track = te.track; + event.receiver = {track: te.track}; + event.streams = [e.stream]; + self.dispatchEvent(event); + }); + e.stream.getTracks().forEach(function(track) { + var event = new Event('track'); + event.track = track; + event.receiver = {track: track}; + event.streams = [e.stream]; + this.dispatchEvent(event); + }.bind(this)); + }.bind(this)); + } + }); + } + }, + + shimSourceObject: function() { + if (typeof window === 'object') { + if (window.HTMLMediaElement && + !('srcObject' in window.HTMLMediaElement.prototype)) { + // Shim the srcObject property, once, when HTMLMediaElement is found. + Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', { + get: function() { + return this._srcObject; + }, + set: function(stream) { + var self = this; + // Use _srcObject as a private property for this shim + this._srcObject = stream; + if (this.src) { + URL.revokeObjectURL(this.src); + } + + if (!stream) { + this.src = ''; + return; + } + this.src = URL.createObjectURL(stream); + // We need to recreate the blob url when a track is added or + // removed. Doing it manually since we want to avoid a recursion. + stream.addEventListener('addtrack', function() { + if (self.src) { + URL.revokeObjectURL(self.src); + } + self.src = URL.createObjectURL(stream); + }); + stream.addEventListener('removetrack', function() { + if (self.src) { + URL.revokeObjectURL(self.src); + } + self.src = URL.createObjectURL(stream); + }); + } + }); + } + } + }, + + shimPeerConnection: function() { + // The RTCPeerConnection object. + window.RTCPeerConnection = function(pcConfig, pcConstraints) { + // Translate iceTransportPolicy to iceTransports, + // see https://code.google.com/p/webrtc/issues/detail?id=4869 + logging('PeerConnection'); + if (pcConfig && pcConfig.iceTransportPolicy) { + pcConfig.iceTransports = pcConfig.iceTransportPolicy; + } + + var pc = new webkitRTCPeerConnection(pcConfig, pcConstraints); + var origGetStats = pc.getStats.bind(pc); + pc.getStats = function(selector, successCallback, errorCallback) { + var self = this; + var args = arguments; + + // If selector is a function then we are in the old style stats so just + // pass back the original getStats format to avoid breaking old users. + if (arguments.length > 0 && typeof selector === 'function') { + return origGetStats(selector, successCallback); + } + + var fixChromeStats_ = function(response) { + var standardReport = {}; + var reports = response.result(); + reports.forEach(function(report) { + var standardStats = { + id: report.id, + timestamp: report.timestamp, + type: report.type + }; + report.names().forEach(function(name) { + standardStats[name] = report.stat(name); + }); + standardReport[standardStats.id] = standardStats; + }); + + return standardReport; + }; + + // shim getStats with maplike support + var makeMapStats = function(stats, legacyStats) { + var map = new Map(Object.keys(stats).map(function(key) { + return[key, stats[key]]; + })); + legacyStats = legacyStats || stats; + Object.keys(legacyStats).forEach(function(key) { + map[key] = legacyStats[key]; + }); + return map; + }; + + if (arguments.length >= 2) { + var successCallbackWrapper_ = function(response) { + args[1](makeMapStats(fixChromeStats_(response))); + }; + + return origGetStats.apply(this, [successCallbackWrapper_, + arguments[0]]); + } + + // promise-support + return new Promise(function(resolve, reject) { + if (args.length === 1 && typeof selector === 'object') { + origGetStats.apply(self, [ + function(response) { + resolve(makeMapStats(fixChromeStats_(response))); + }, reject]); + } else { + // Preserve legacy chrome stats only on legacy access of stats obj + origGetStats.apply(self, [ + function(response) { + resolve(makeMapStats(fixChromeStats_(response), + response.result())); + }, reject]); + } + }).then(successCallback, errorCallback); + }; + + return pc; + }; + window.RTCPeerConnection.prototype = webkitRTCPeerConnection.prototype; + + // wrap static methods. Currently just generateCertificate. + if (webkitRTCPeerConnection.generateCertificate) { + Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { + get: function() { + return webkitRTCPeerConnection.generateCertificate; + } + }); + } + + ['createOffer', 'createAnswer'].forEach(function(method) { + var nativeMethod = webkitRTCPeerConnection.prototype[method]; + webkitRTCPeerConnection.prototype[method] = function() { + var self = this; + if (arguments.length < 1 || (arguments.length === 1 && + typeof arguments[0] === 'object')) { + var opts = arguments.length === 1 ? arguments[0] : undefined; + return new Promise(function(resolve, reject) { + nativeMethod.apply(self, [resolve, reject, opts]); + }); + } + return nativeMethod.apply(this, arguments); + }; + }); + + // add promise support -- natively available in Chrome 51 + if (browserDetails.version < 51) { + ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] + .forEach(function(method) { + var nativeMethod = webkitRTCPeerConnection.prototype[method]; + webkitRTCPeerConnection.prototype[method] = function() { + var args = arguments; + var self = this; + var promise = new Promise(function(resolve, reject) { + nativeMethod.apply(self, [args[0], resolve, reject]); + }); + if (args.length < 2) { + return promise; + } + return promise.then(function() { + args[1].apply(null, []); + }, + function(err) { + if (args.length >= 3) { + args[2].apply(null, [err]); + } + }); + }; + }); + } + + // shim implicit creation of RTCSessionDescription/RTCIceCandidate + ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] + .forEach(function(method) { + var nativeMethod = webkitRTCPeerConnection.prototype[method]; + webkitRTCPeerConnection.prototype[method] = function() { + arguments[0] = new ((method === 'addIceCandidate') ? + RTCIceCandidate : RTCSessionDescription)(arguments[0]); + return nativeMethod.apply(this, arguments); + }; + }); + + // support for addIceCandidate(null) + var nativeAddIceCandidate = + RTCPeerConnection.prototype.addIceCandidate; + RTCPeerConnection.prototype.addIceCandidate = function() { + if (arguments[0] === null) { + if (arguments[1]) { + arguments[1].apply(null); + } + return Promise.resolve(); + } + return nativeAddIceCandidate.apply(this, arguments); + }; + } +}; + + +// Expose public methods. +module.exports = { + shimMediaStream: chromeShim.shimMediaStream, + shimOnTrack: chromeShim.shimOnTrack, + shimSourceObject: chromeShim.shimSourceObject, + shimPeerConnection: chromeShim.shimPeerConnection, + shimGetUserMedia: require('./getusermedia') +}; + +},{"../utils.js":128,"./getusermedia":122}],122:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; +var logging = require('../utils.js').log; + +// Expose public methods. +module.exports = function() { + var constraintsToChrome_ = function(c) { + if (typeof c !== 'object' || c.mandatory || c.optional) { + return c; + } + var cc = {}; + Object.keys(c).forEach(function(key) { + if (key === 'require' || key === 'advanced' || key === 'mediaSource') { + return; + } + var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]}; + if (r.exact !== undefined && typeof r.exact === 'number') { + r.min = r.max = r.exact; + } + var oldname_ = function(prefix, name) { + if (prefix) { + return prefix + name.charAt(0).toUpperCase() + name.slice(1); + } + return (name === 'deviceId') ? 'sourceId' : name; + }; + if (r.ideal !== undefined) { + cc.optional = cc.optional || []; + var oc = {}; + if (typeof r.ideal === 'number') { + oc[oldname_('min', key)] = r.ideal; + cc.optional.push(oc); + oc = {}; + oc[oldname_('max', key)] = r.ideal; + cc.optional.push(oc); + } else { + oc[oldname_('', key)] = r.ideal; + cc.optional.push(oc); + } + } + if (r.exact !== undefined && typeof r.exact !== 'number') { + cc.mandatory = cc.mandatory || {}; + cc.mandatory[oldname_('', key)] = r.exact; + } else { + ['min', 'max'].forEach(function(mix) { + if (r[mix] !== undefined) { + cc.mandatory = cc.mandatory || {}; + cc.mandatory[oldname_(mix, key)] = r[mix]; + } + }); + } + }); + if (c.advanced) { + cc.optional = (cc.optional || []).concat(c.advanced); + } + return cc; + }; + + var shimConstraints_ = function(constraints, func) { + constraints = JSON.parse(JSON.stringify(constraints)); + if (constraints && constraints.audio) { + constraints.audio = constraintsToChrome_(constraints.audio); + } + if (constraints && typeof constraints.video === 'object') { + // Shim facingMode for mobile, where it defaults to "user". + var face = constraints.video.facingMode; + face = face && ((typeof face === 'object') ? face : {ideal: face}); + + if ((face && (face.exact === 'user' || face.exact === 'environment' || + face.ideal === 'user' || face.ideal === 'environment')) && + !(navigator.mediaDevices.getSupportedConstraints && + navigator.mediaDevices.getSupportedConstraints().facingMode)) { + delete constraints.video.facingMode; + if (face.exact === 'environment' || face.ideal === 'environment') { + // Look for "back" in label, or use last cam (typically back cam). + return navigator.mediaDevices.enumerateDevices() + .then(function(devices) { + devices = devices.filter(function(d) { + return d.kind === 'videoinput'; + }); + var back = devices.find(function(d) { + return d.label.toLowerCase().indexOf('back') !== -1; + }) || (devices.length && devices[devices.length - 1]); + if (back) { + constraints.video.deviceId = face.exact ? {exact: back.deviceId} : + {ideal: back.deviceId}; + } + constraints.video = constraintsToChrome_(constraints.video); + logging('chrome: ' + JSON.stringify(constraints)); + return func(constraints); + }); + } + } + constraints.video = constraintsToChrome_(constraints.video); + } + logging('chrome: ' + JSON.stringify(constraints)); + return func(constraints); + }; + + var shimError_ = function(e) { + return { + name: { + PermissionDeniedError: 'NotAllowedError', + ConstraintNotSatisfiedError: 'OverconstrainedError' + }[e.name] || e.name, + message: e.message, + constraint: e.constraintName, + toString: function() { + return this.name + (this.message && ': ') + this.message; + } + }; + }; + + var getUserMedia_ = function(constraints, onSuccess, onError) { + shimConstraints_(constraints, function(c) { + navigator.webkitGetUserMedia(c, onSuccess, function(e) { + onError(shimError_(e)); + }); + }); + }; + + navigator.getUserMedia = getUserMedia_; + + // Returns the result of getUserMedia as a Promise. + var getUserMediaPromise_ = function(constraints) { + return new Promise(function(resolve, reject) { + navigator.getUserMedia(constraints, resolve, reject); + }); + }; + + if (!navigator.mediaDevices) { + navigator.mediaDevices = { + getUserMedia: getUserMediaPromise_, + enumerateDevices: function() { + return new Promise(function(resolve) { + var kinds = {audio: 'audioinput', video: 'videoinput'}; + return MediaStreamTrack.getSources(function(devices) { + resolve(devices.map(function(device) { + return {label: device.label, + kind: kinds[device.kind], + deviceId: device.id, + groupId: ''}; + })); + }); + }); + } + }; + } + + // A shim for getUserMedia method on the mediaDevices object. + // TODO(KaptenJansson) remove once implemented in Chrome stable. + if (!navigator.mediaDevices.getUserMedia) { + navigator.mediaDevices.getUserMedia = function(constraints) { + return getUserMediaPromise_(constraints); + }; + } else { + // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia + // function which returns a Promise, it does not accept spec-style + // constraints. + var origGetUserMedia = navigator.mediaDevices.getUserMedia. + bind(navigator.mediaDevices); + navigator.mediaDevices.getUserMedia = function(cs) { + return shimConstraints_(cs, function(c) { + return origGetUserMedia(c).then(function(stream) { + if (c.audio && !stream.getAudioTracks().length || + c.video && !stream.getVideoTracks().length) { + stream.getTracks().forEach(function(track) { + track.stop(); + }); + throw new DOMException('', 'NotFoundError'); + } + return stream; + }, function(e) { + return Promise.reject(shimError_(e)); + }); + }); + }; + } + + // Dummy devicechange event methods. + // TODO(KaptenJansson) remove once implemented in Chrome stable. + if (typeof navigator.mediaDevices.addEventListener === 'undefined') { + navigator.mediaDevices.addEventListener = function() { + logging('Dummy mediaDevices.addEventListener called.'); + }; + } + if (typeof navigator.mediaDevices.removeEventListener === 'undefined') { + navigator.mediaDevices.removeEventListener = function() { + logging('Dummy mediaDevices.removeEventListener called.'); + }; + } +}; + +},{"../utils.js":128}],123:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +var SDPUtils = require('sdp'); +var browserDetails = require('../utils').browserDetails; + +var edgeShim = { + shimPeerConnection: function() { + if (window.RTCIceGatherer) { + // ORTC defines an RTCIceCandidate object but no constructor. + // Not implemented in Edge. + if (!window.RTCIceCandidate) { + window.RTCIceCandidate = function(args) { + return args; + }; + } + // ORTC does not have a session description object but + // other browsers (i.e. Chrome) that will support both PC and ORTC + // in the future might have this defined already. + if (!window.RTCSessionDescription) { + window.RTCSessionDescription = function(args) { + return args; + }; + } + // this adds an additional event listener to MediaStrackTrack that signals + // when a tracks enabled property was changed. + var origMSTEnabled = Object.getOwnPropertyDescriptor( + MediaStreamTrack.prototype, 'enabled'); + Object.defineProperty(MediaStreamTrack.prototype, 'enabled', { + set: function(value) { + origMSTEnabled.set.call(this, value); + var ev = new Event('enabled'); + ev.enabled = value; + this.dispatchEvent(ev); + } + }); + } + + window.RTCPeerConnection = function(config) { + var self = this; + + var _eventTarget = document.createDocumentFragment(); + ['addEventListener', 'removeEventListener', 'dispatchEvent'] + .forEach(function(method) { + self[method] = _eventTarget[method].bind(_eventTarget); + }); + + this.onicecandidate = null; + this.onaddstream = null; + this.ontrack = null; + this.onremovestream = null; + this.onsignalingstatechange = null; + this.oniceconnectionstatechange = null; + this.onnegotiationneeded = null; + this.ondatachannel = null; + + this.localStreams = []; + this.remoteStreams = []; + this.getLocalStreams = function() { + return self.localStreams; + }; + this.getRemoteStreams = function() { + return self.remoteStreams; + }; + + this.localDescription = new RTCSessionDescription({ + type: '', + sdp: '' + }); + this.remoteDescription = new RTCSessionDescription({ + type: '', + sdp: '' + }); + this.signalingState = 'stable'; + this.iceConnectionState = 'new'; + this.iceGatheringState = 'new'; + + this.iceOptions = { + gatherPolicy: 'all', + iceServers: [] + }; + if (config && config.iceTransportPolicy) { + switch (config.iceTransportPolicy) { + case 'all': + case 'relay': + this.iceOptions.gatherPolicy = config.iceTransportPolicy; + break; + case 'none': + // FIXME: remove once implementation and spec have added this. + throw new TypeError('iceTransportPolicy "none" not supported'); + default: + // don't set iceTransportPolicy. + break; + } + } + this.usingBundle = config && config.bundlePolicy === 'max-bundle'; + + if (config && config.iceServers) { + // Edge does not like + // 1) stun: + // 2) turn: that does not have all of turn:host:port?transport=udp + // 3) turn: with ipv6 addresses + var iceServers = JSON.parse(JSON.stringify(config.iceServers)); + this.iceOptions.iceServers = iceServers.filter(function(server) { + if (server && server.urls) { + var urls = server.urls; + if (typeof urls === 'string') { + urls = [urls]; + } + urls = urls.filter(function(url) { + return (url.indexOf('turn:') === 0 && + url.indexOf('transport=udp') !== -1 && + url.indexOf('turn:[') === -1) || + (url.indexOf('stun:') === 0 && + browserDetails.version >= 14393); + })[0]; + return !!urls; + } + return false; + }); + } + this._config = config; + + // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ... + // everything that is needed to describe a SDP m-line. + this.transceivers = []; + + // since the iceGatherer is currently created in createOffer but we + // must not emit candidates until after setLocalDescription we buffer + // them in this array. + this._localIceCandidatesBuffer = []; + }; + + window.RTCPeerConnection.prototype._emitBufferedCandidates = function() { + var self = this; + var sections = SDPUtils.splitSections(self.localDescription.sdp); + // FIXME: need to apply ice candidates in a way which is async but + // in-order + this._localIceCandidatesBuffer.forEach(function(event) { + var end = !event.candidate || Object.keys(event.candidate).length === 0; + if (end) { + for (var j = 1; j < sections.length; j++) { + if (sections[j].indexOf('\r\na=end-of-candidates\r\n') === -1) { + sections[j] += 'a=end-of-candidates\r\n'; + } + } + } else if (event.candidate.candidate.indexOf('typ endOfCandidates') + === -1) { + sections[event.candidate.sdpMLineIndex + 1] += + 'a=' + event.candidate.candidate + '\r\n'; + } + self.localDescription.sdp = sections.join(''); + self.dispatchEvent(event); + if (self.onicecandidate !== null) { + self.onicecandidate(event); + } + if (!event.candidate && self.iceGatheringState !== 'complete') { + var complete = self.transceivers.every(function(transceiver) { + return transceiver.iceGatherer && + transceiver.iceGatherer.state === 'completed'; + }); + if (complete) { + self.iceGatheringState = 'complete'; + } + } + }); + this._localIceCandidatesBuffer = []; + }; + + window.RTCPeerConnection.prototype.getConfiguration = function() { + return this._config; + }; + + window.RTCPeerConnection.prototype.addStream = function(stream) { + // Clone is necessary for local demos mostly, attaching directly + // to two different senders does not work (build 10547). + var clonedStream = stream.clone(); + stream.getTracks().forEach(function(track, idx) { + var clonedTrack = clonedStream.getTracks()[idx]; + track.addEventListener('enabled', function(event) { + clonedTrack.enabled = event.enabled; + }); + }); + this.localStreams.push(clonedStream); + this._maybeFireNegotiationNeeded(); + }; + + window.RTCPeerConnection.prototype.removeStream = function(stream) { + var idx = this.localStreams.indexOf(stream); + if (idx > -1) { + this.localStreams.splice(idx, 1); + this._maybeFireNegotiationNeeded(); + } + }; + + window.RTCPeerConnection.prototype.getSenders = function() { + return this.transceivers.filter(function(transceiver) { + return !!transceiver.rtpSender; + }) + .map(function(transceiver) { + return transceiver.rtpSender; + }); + }; + + window.RTCPeerConnection.prototype.getReceivers = function() { + return this.transceivers.filter(function(transceiver) { + return !!transceiver.rtpReceiver; + }) + .map(function(transceiver) { + return transceiver.rtpReceiver; + }); + }; + + // Determines the intersection of local and remote capabilities. + window.RTCPeerConnection.prototype._getCommonCapabilities = + function(localCapabilities, remoteCapabilities) { + var commonCapabilities = { + codecs: [], + headerExtensions: [], + fecMechanisms: [] + }; + localCapabilities.codecs.forEach(function(lCodec) { + for (var i = 0; i < remoteCapabilities.codecs.length; i++) { + var rCodec = remoteCapabilities.codecs[i]; + if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() && + lCodec.clockRate === rCodec.clockRate) { + // number of channels is the highest common number of channels + rCodec.numChannels = Math.min(lCodec.numChannels, + rCodec.numChannels); + // push rCodec so we reply with offerer payload type + commonCapabilities.codecs.push(rCodec); + + // determine common feedback mechanisms + rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) { + for (var j = 0; j < lCodec.rtcpFeedback.length; j++) { + if (lCodec.rtcpFeedback[j].type === fb.type && + lCodec.rtcpFeedback[j].parameter === fb.parameter) { + return true; + } + } + return false; + }); + // FIXME: also need to determine .parameters + // see https://github.com/openpeer/ortc/issues/569 + break; + } + } + }); + + localCapabilities.headerExtensions + .forEach(function(lHeaderExtension) { + for (var i = 0; i < remoteCapabilities.headerExtensions.length; + i++) { + var rHeaderExtension = remoteCapabilities.headerExtensions[i]; + if (lHeaderExtension.uri === rHeaderExtension.uri) { + commonCapabilities.headerExtensions.push(rHeaderExtension); + break; + } + } + }); + + // FIXME: fecMechanisms + return commonCapabilities; + }; + + // Create ICE gatherer, ICE transport and DTLS transport. + window.RTCPeerConnection.prototype._createIceAndDtlsTransports = + function(mid, sdpMLineIndex) { + var self = this; + var iceGatherer = new RTCIceGatherer(self.iceOptions); + var iceTransport = new RTCIceTransport(iceGatherer); + iceGatherer.onlocalcandidate = function(evt) { + var event = new Event('icecandidate'); + event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex}; + + var cand = evt.candidate; + var end = !cand || Object.keys(cand).length === 0; + // Edge emits an empty object for RTCIceCandidateComplete‥ + if (end) { + // polyfill since RTCIceGatherer.state is not implemented in + // Edge 10547 yet. + if (iceGatherer.state === undefined) { + iceGatherer.state = 'completed'; + } + + // Emit a candidate with type endOfCandidates to make the samples + // work. Edge requires addIceCandidate with this empty candidate + // to start checking. The real solution is to signal + // end-of-candidates to the other side when getting the null + // candidate but some apps (like the samples) don't do that. + event.candidate.candidate = + 'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates'; + } else { + // RTCIceCandidate doesn't have a component, needs to be added + cand.component = iceTransport.component === 'RTCP' ? 2 : 1; + event.candidate.candidate = SDPUtils.writeCandidate(cand); + } + + // update local description. + var sections = SDPUtils.splitSections(self.localDescription.sdp); + if (event.candidate.candidate.indexOf('typ endOfCandidates') + === -1) { + sections[event.candidate.sdpMLineIndex + 1] += + 'a=' + event.candidate.candidate + '\r\n'; + } else { + sections[event.candidate.sdpMLineIndex + 1] += + 'a=end-of-candidates\r\n'; + } + self.localDescription.sdp = sections.join(''); + + var complete = self.transceivers.every(function(transceiver) { + return transceiver.iceGatherer && + transceiver.iceGatherer.state === 'completed'; + }); + + // Emit candidate if localDescription is set. + // Also emits null candidate when all gatherers are complete. + switch (self.iceGatheringState) { + case 'new': + self._localIceCandidatesBuffer.push(event); + if (end && complete) { + self._localIceCandidatesBuffer.push( + new Event('icecandidate')); + } + break; + case 'gathering': + self._emitBufferedCandidates(); + self.dispatchEvent(event); + if (self.onicecandidate !== null) { + self.onicecandidate(event); + } + if (complete) { + self.dispatchEvent(new Event('icecandidate')); + if (self.onicecandidate !== null) { + self.onicecandidate(new Event('icecandidate')); + } + self.iceGatheringState = 'complete'; + } + break; + case 'complete': + // should not happen... currently! + break; + default: // no-op. + break; + } + }; + iceTransport.onicestatechange = function() { + self._updateConnectionState(); + }; + + var dtlsTransport = new RTCDtlsTransport(iceTransport); + dtlsTransport.ondtlsstatechange = function() { + self._updateConnectionState(); + }; + dtlsTransport.onerror = function() { + // onerror does not set state to failed by itself. + dtlsTransport.state = 'failed'; + self._updateConnectionState(); + }; + + return { + iceGatherer: iceGatherer, + iceTransport: iceTransport, + dtlsTransport: dtlsTransport + }; + }; + + // Start the RTP Sender and Receiver for a transceiver. + window.RTCPeerConnection.prototype._transceive = function(transceiver, + send, recv) { + var params = this._getCommonCapabilities(transceiver.localCapabilities, + transceiver.remoteCapabilities); + if (send && transceiver.rtpSender) { + params.encodings = transceiver.sendEncodingParameters; + params.rtcp = { + cname: SDPUtils.localCName + }; + if (transceiver.recvEncodingParameters.length) { + params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc; + } + transceiver.rtpSender.send(params); + } + if (recv && transceiver.rtpReceiver) { + // remove RTX field in Edge 14942 + if (transceiver.kind === 'video' + && transceiver.recvEncodingParameters) { + transceiver.recvEncodingParameters.forEach(function(p) { + delete p.rtx; + }); + } + params.encodings = transceiver.recvEncodingParameters; + params.rtcp = { + cname: transceiver.cname + }; + if (transceiver.sendEncodingParameters.length) { + params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc; + } + transceiver.rtpReceiver.receive(params); + } + }; + + window.RTCPeerConnection.prototype.setLocalDescription = + function(description) { + var self = this; + var sections; + var sessionpart; + if (description.type === 'offer') { + // FIXME: What was the purpose of this empty if statement? + // if (!this._pendingOffer) { + // } else { + if (this._pendingOffer) { + // VERY limited support for SDP munging. Limited to: + // * changing the order of codecs + sections = SDPUtils.splitSections(description.sdp); + sessionpart = sections.shift(); + sections.forEach(function(mediaSection, sdpMLineIndex) { + var caps = SDPUtils.parseRtpParameters(mediaSection); + self._pendingOffer[sdpMLineIndex].localCapabilities = caps; + }); + this.transceivers = this._pendingOffer; + delete this._pendingOffer; + } + } else if (description.type === 'answer') { + sections = SDPUtils.splitSections(self.remoteDescription.sdp); + sessionpart = sections.shift(); + var isIceLite = SDPUtils.matchPrefix(sessionpart, + 'a=ice-lite').length > 0; + sections.forEach(function(mediaSection, sdpMLineIndex) { + var transceiver = self.transceivers[sdpMLineIndex]; + var iceGatherer = transceiver.iceGatherer; + var iceTransport = transceiver.iceTransport; + var dtlsTransport = transceiver.dtlsTransport; + var localCapabilities = transceiver.localCapabilities; + var remoteCapabilities = transceiver.remoteCapabilities; + + var rejected = mediaSection.split('\n', 1)[0] + .split(' ', 2)[1] === '0'; + + if (!rejected && !transceiver.isDatachannel) { + var remoteIceParameters = SDPUtils.getIceParameters( + mediaSection, sessionpart); + if (isIceLite) { + var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:') + .map(function(cand) { + return SDPUtils.parseCandidate(cand); + }) + .filter(function(cand) { + return cand.component === '1'; + }); + // ice-lite only includes host candidates in the SDP so we can + // use setRemoteCandidates (which implies an + // RTCIceCandidateComplete) + if (cands.length) { + iceTransport.setRemoteCandidates(cands); + } + } + var remoteDtlsParameters = SDPUtils.getDtlsParameters( + mediaSection, sessionpart); + if (isIceLite) { + remoteDtlsParameters.role = 'server'; + } + + if (!self.usingBundle || sdpMLineIndex === 0) { + iceTransport.start(iceGatherer, remoteIceParameters, + isIceLite ? 'controlling' : 'controlled'); + dtlsTransport.start(remoteDtlsParameters); + } + + // Calculate intersection of capabilities. + var params = self._getCommonCapabilities(localCapabilities, + remoteCapabilities); + + // Start the RTCRtpSender. The RTCRtpReceiver for this + // transceiver has already been started in setRemoteDescription. + self._transceive(transceiver, + params.codecs.length > 0, + false); + } + }); + } + + this.localDescription = { + type: description.type, + sdp: description.sdp + }; + switch (description.type) { + case 'offer': + this._updateSignalingState('have-local-offer'); + break; + case 'answer': + this._updateSignalingState('stable'); + break; + default: + throw new TypeError('unsupported type "' + description.type + + '"'); + } + + // If a success callback was provided, emit ICE candidates after it + // has been executed. Otherwise, emit callback after the Promise is + // resolved. + var hasCallback = arguments.length > 1 && + typeof arguments[1] === 'function'; + if (hasCallback) { + var cb = arguments[1]; + window.setTimeout(function() { + cb(); + if (self.iceGatheringState === 'new') { + self.iceGatheringState = 'gathering'; + } + self._emitBufferedCandidates(); + }, 0); + } + var p = Promise.resolve(); + p.then(function() { + if (!hasCallback) { + if (self.iceGatheringState === 'new') { + self.iceGatheringState = 'gathering'; + } + // Usually candidates will be emitted earlier. + window.setTimeout(self._emitBufferedCandidates.bind(self), 500); + } + }); + return p; + }; + + window.RTCPeerConnection.prototype.setRemoteDescription = + function(description) { + var self = this; + var stream = new MediaStream(); + var receiverList = []; + var sections = SDPUtils.splitSections(description.sdp); + var sessionpart = sections.shift(); + var isIceLite = SDPUtils.matchPrefix(sessionpart, + 'a=ice-lite').length > 0; + this.usingBundle = SDPUtils.matchPrefix(sessionpart, + 'a=group:BUNDLE ').length > 0; + sections.forEach(function(mediaSection, sdpMLineIndex) { + var lines = SDPUtils.splitLines(mediaSection); + var mline = lines[0].substr(2).split(' '); + var kind = mline[0]; + var rejected = mline[1] === '0'; + var direction = SDPUtils.getDirection(mediaSection, sessionpart); + + var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:'); + if (mid.length) { + mid = mid[0].substr(6); + } else { + mid = SDPUtils.generateIdentifier(); + } + + // Reject datachannels which are not implemented yet. + if (kind === 'application' && mline[2] === 'DTLS/SCTP') { + self.transceivers[sdpMLineIndex] = { + mid: mid, + isDatachannel: true + }; + return; + } + + var transceiver; + var iceGatherer; + var iceTransport; + var dtlsTransport; + var rtpSender; + var rtpReceiver; + var sendEncodingParameters; + var recvEncodingParameters; + var localCapabilities; + + var track; + // FIXME: ensure the mediaSection has rtcp-mux set. + var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection); + var remoteIceParameters; + var remoteDtlsParameters; + if (!rejected) { + remoteIceParameters = SDPUtils.getIceParameters(mediaSection, + sessionpart); + remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection, + sessionpart); + remoteDtlsParameters.role = 'client'; + } + recvEncodingParameters = + SDPUtils.parseRtpEncodingParameters(mediaSection); + + var cname; + // Gets the first SSRC. Note that with RTX there might be multiple + // SSRCs. + var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') + .map(function(line) { + return SDPUtils.parseSsrcMedia(line); + }) + .filter(function(obj) { + return obj.attribute === 'cname'; + })[0]; + if (remoteSsrc) { + cname = remoteSsrc.value; + } + + var isComplete = SDPUtils.matchPrefix(mediaSection, + 'a=end-of-candidates', sessionpart).length > 0; + var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:') + .map(function(cand) { + return SDPUtils.parseCandidate(cand); + }) + .filter(function(cand) { + return cand.component === '1'; + }); + if (description.type === 'offer' && !rejected) { + var transports = self.usingBundle && sdpMLineIndex > 0 ? { + iceGatherer: self.transceivers[0].iceGatherer, + iceTransport: self.transceivers[0].iceTransport, + dtlsTransport: self.transceivers[0].dtlsTransport + } : self._createIceAndDtlsTransports(mid, sdpMLineIndex); + + if (isComplete) { + transports.iceTransport.setRemoteCandidates(cands); + } + + localCapabilities = RTCRtpReceiver.getCapabilities(kind); + + // filter RTX until additional stuff needed for RTX is implemented + // in adapter.js + localCapabilities.codecs = localCapabilities.codecs.filter( + function(codec) { + return codec.name !== 'rtx'; + }); + + sendEncodingParameters = [{ + ssrc: (2 * sdpMLineIndex + 2) * 1001 + }]; + + rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind); + + track = rtpReceiver.track; + receiverList.push([track, rtpReceiver]); + // FIXME: not correct when there are multiple streams but that is + // not currently supported in this shim. + stream.addTrack(track); + + // FIXME: look at direction. + if (self.localStreams.length > 0 && + self.localStreams[0].getTracks().length >= sdpMLineIndex) { + var localTrack; + if (kind === 'audio') { + localTrack = self.localStreams[0].getAudioTracks()[0]; + } else if (kind === 'video') { + localTrack = self.localStreams[0].getVideoTracks()[0]; + } + if (localTrack) { + rtpSender = new RTCRtpSender(localTrack, + transports.dtlsTransport); + } + } + + self.transceivers[sdpMLineIndex] = { + iceGatherer: transports.iceGatherer, + iceTransport: transports.iceTransport, + dtlsTransport: transports.dtlsTransport, + localCapabilities: localCapabilities, + remoteCapabilities: remoteCapabilities, + rtpSender: rtpSender, + rtpReceiver: rtpReceiver, + kind: kind, + mid: mid, + cname: cname, + sendEncodingParameters: sendEncodingParameters, + recvEncodingParameters: recvEncodingParameters + }; + // Start the RTCRtpReceiver now. The RTPSender is started in + // setLocalDescription. + self._transceive(self.transceivers[sdpMLineIndex], + false, + direction === 'sendrecv' || direction === 'sendonly'); + } else if (description.type === 'answer' && !rejected) { + transceiver = self.transceivers[sdpMLineIndex]; + iceGatherer = transceiver.iceGatherer; + iceTransport = transceiver.iceTransport; + dtlsTransport = transceiver.dtlsTransport; + rtpSender = transceiver.rtpSender; + rtpReceiver = transceiver.rtpReceiver; + sendEncodingParameters = transceiver.sendEncodingParameters; + localCapabilities = transceiver.localCapabilities; + + self.transceivers[sdpMLineIndex].recvEncodingParameters = + recvEncodingParameters; + self.transceivers[sdpMLineIndex].remoteCapabilities = + remoteCapabilities; + self.transceivers[sdpMLineIndex].cname = cname; + + if ((isIceLite || isComplete) && cands.length) { + iceTransport.setRemoteCandidates(cands); + } + if (!self.usingBundle || sdpMLineIndex === 0) { + iceTransport.start(iceGatherer, remoteIceParameters, + 'controlling'); + dtlsTransport.start(remoteDtlsParameters); + } + + self._transceive(transceiver, + direction === 'sendrecv' || direction === 'recvonly', + direction === 'sendrecv' || direction === 'sendonly'); + + if (rtpReceiver && + (direction === 'sendrecv' || direction === 'sendonly')) { + track = rtpReceiver.track; + receiverList.push([track, rtpReceiver]); + stream.addTrack(track); + } else { + // FIXME: actually the receiver should be created later. + delete transceiver.rtpReceiver; + } + } + }); + + this.remoteDescription = { + type: description.type, + sdp: description.sdp + }; + switch (description.type) { + case 'offer': + this._updateSignalingState('have-remote-offer'); + break; + case 'answer': + this._updateSignalingState('stable'); + break; + default: + throw new TypeError('unsupported type "' + description.type + + '"'); + } + if (stream.getTracks().length) { + self.remoteStreams.push(stream); + window.setTimeout(function() { + var event = new Event('addstream'); + event.stream = stream; + self.dispatchEvent(event); + if (self.onaddstream !== null) { + window.setTimeout(function() { + self.onaddstream(event); + }, 0); + } + + receiverList.forEach(function(item) { + var track = item[0]; + var receiver = item[1]; + var trackEvent = new Event('track'); + trackEvent.track = track; + trackEvent.receiver = receiver; + trackEvent.streams = [stream]; + self.dispatchEvent(event); + if (self.ontrack !== null) { + window.setTimeout(function() { + self.ontrack(trackEvent); + }, 0); + } + }); + }, 0); + } + if (arguments.length > 1 && typeof arguments[1] === 'function') { + window.setTimeout(arguments[1], 0); + } + return Promise.resolve(); + }; + + window.RTCPeerConnection.prototype.close = function() { + this.transceivers.forEach(function(transceiver) { + /* not yet + if (transceiver.iceGatherer) { + transceiver.iceGatherer.close(); + } + */ + if (transceiver.iceTransport) { + transceiver.iceTransport.stop(); + } + if (transceiver.dtlsTransport) { + transceiver.dtlsTransport.stop(); + } + if (transceiver.rtpSender) { + transceiver.rtpSender.stop(); + } + if (transceiver.rtpReceiver) { + transceiver.rtpReceiver.stop(); + } + }); + // FIXME: clean up tracks, local streams, remote streams, etc + this._updateSignalingState('closed'); + }; + + // Update the signaling state. + window.RTCPeerConnection.prototype._updateSignalingState = + function(newState) { + this.signalingState = newState; + var event = new Event('signalingstatechange'); + this.dispatchEvent(event); + if (this.onsignalingstatechange !== null) { + this.onsignalingstatechange(event); + } + }; + + // Determine whether to fire the negotiationneeded event. + window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded = + function() { + // Fire away (for now). + var event = new Event('negotiationneeded'); + this.dispatchEvent(event); + if (this.onnegotiationneeded !== null) { + this.onnegotiationneeded(event); + } + }; + + // Update the connection state. + window.RTCPeerConnection.prototype._updateConnectionState = function() { + var self = this; + var newState; + var states = { + 'new': 0, + closed: 0, + connecting: 0, + checking: 0, + connected: 0, + completed: 0, + failed: 0 + }; + this.transceivers.forEach(function(transceiver) { + states[transceiver.iceTransport.state]++; + states[transceiver.dtlsTransport.state]++; + }); + // ICETransport.completed and connected are the same for this purpose. + states.connected += states.completed; + + newState = 'new'; + if (states.failed > 0) { + newState = 'failed'; + } else if (states.connecting > 0 || states.checking > 0) { + newState = 'connecting'; + } else if (states.disconnected > 0) { + newState = 'disconnected'; + } else if (states.new > 0) { + newState = 'new'; + } else if (states.connected > 0 || states.completed > 0) { + newState = 'connected'; + } + + if (newState !== self.iceConnectionState) { + self.iceConnectionState = newState; + var event = new Event('iceconnectionstatechange'); + this.dispatchEvent(event); + if (this.oniceconnectionstatechange !== null) { + this.oniceconnectionstatechange(event); + } + } + }; + + window.RTCPeerConnection.prototype.createOffer = function() { + var self = this; + if (this._pendingOffer) { + throw new Error('createOffer called while there is a pending offer.'); + } + var offerOptions; + if (arguments.length === 1 && typeof arguments[0] !== 'function') { + offerOptions = arguments[0]; + } else if (arguments.length === 3) { + offerOptions = arguments[2]; + } + + var tracks = []; + var numAudioTracks = 0; + var numVideoTracks = 0; + // Default to sendrecv. + if (this.localStreams.length) { + numAudioTracks = this.localStreams[0].getAudioTracks().length; + numVideoTracks = this.localStreams[0].getVideoTracks().length; + } + // Determine number of audio and video tracks we need to send/recv. + if (offerOptions) { + // Reject Chrome legacy constraints. + if (offerOptions.mandatory || offerOptions.optional) { + throw new TypeError( + 'Legacy mandatory/optional constraints not supported.'); + } + if (offerOptions.offerToReceiveAudio !== undefined) { + numAudioTracks = offerOptions.offerToReceiveAudio; + } + if (offerOptions.offerToReceiveVideo !== undefined) { + numVideoTracks = offerOptions.offerToReceiveVideo; + } + } + if (this.localStreams.length) { + // Push local streams. + this.localStreams[0].getTracks().forEach(function(track) { + tracks.push({ + kind: track.kind, + track: track, + wantReceive: track.kind === 'audio' ? + numAudioTracks > 0 : numVideoTracks > 0 + }); + if (track.kind === 'audio') { + numAudioTracks--; + } else if (track.kind === 'video') { + numVideoTracks--; + } + }); + } + // Create M-lines for recvonly streams. + while (numAudioTracks > 0 || numVideoTracks > 0) { + if (numAudioTracks > 0) { + tracks.push({ + kind: 'audio', + wantReceive: true + }); + numAudioTracks--; + } + if (numVideoTracks > 0) { + tracks.push({ + kind: 'video', + wantReceive: true + }); + numVideoTracks--; + } + } + + var sdp = SDPUtils.writeSessionBoilerplate(); + var transceivers = []; + tracks.forEach(function(mline, sdpMLineIndex) { + // For each track, create an ice gatherer, ice transport, + // dtls transport, potentially rtpsender and rtpreceiver. + var track = mline.track; + var kind = mline.kind; + var mid = SDPUtils.generateIdentifier(); + + var transports = self.usingBundle && sdpMLineIndex > 0 ? { + iceGatherer: transceivers[0].iceGatherer, + iceTransport: transceivers[0].iceTransport, + dtlsTransport: transceivers[0].dtlsTransport + } : self._createIceAndDtlsTransports(mid, sdpMLineIndex); + + var localCapabilities = RTCRtpSender.getCapabilities(kind); + // filter RTX until additional stuff needed for RTX is implemented + // in adapter.js + localCapabilities.codecs = localCapabilities.codecs.filter( + function(codec) { + return codec.name !== 'rtx'; + }); + localCapabilities.codecs.forEach(function(codec) { + // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552 + // by adding level-asymmetry-allowed=1 + if (codec.name === 'H264' && + codec.parameters['level-asymmetry-allowed'] === undefined) { + codec.parameters['level-asymmetry-allowed'] = '1'; + } + }); + + var rtpSender; + var rtpReceiver; + + // generate an ssrc now, to be used later in rtpSender.send + var sendEncodingParameters = [{ + ssrc: (2 * sdpMLineIndex + 1) * 1001 + }]; + if (track) { + rtpSender = new RTCRtpSender(track, transports.dtlsTransport); + } + + if (mline.wantReceive) { + rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind); + } + + transceivers[sdpMLineIndex] = { + iceGatherer: transports.iceGatherer, + iceTransport: transports.iceTransport, + dtlsTransport: transports.dtlsTransport, + localCapabilities: localCapabilities, + remoteCapabilities: null, + rtpSender: rtpSender, + rtpReceiver: rtpReceiver, + kind: kind, + mid: mid, + sendEncodingParameters: sendEncodingParameters, + recvEncodingParameters: null + }; + }); + if (this.usingBundle) { + sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) { + return t.mid; + }).join(' ') + '\r\n'; + } + tracks.forEach(function(mline, sdpMLineIndex) { + var transceiver = transceivers[sdpMLineIndex]; + sdp += SDPUtils.writeMediaSection(transceiver, + transceiver.localCapabilities, 'offer', self.localStreams[0]); + }); + + this._pendingOffer = transceivers; + var desc = new RTCSessionDescription({ + type: 'offer', + sdp: sdp + }); + if (arguments.length && typeof arguments[0] === 'function') { + window.setTimeout(arguments[0], 0, desc); + } + return Promise.resolve(desc); + }; + + window.RTCPeerConnection.prototype.createAnswer = function() { + var self = this; + + var sdp = SDPUtils.writeSessionBoilerplate(); + if (this.usingBundle) { + sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) { + return t.mid; + }).join(' ') + '\r\n'; + } + this.transceivers.forEach(function(transceiver) { + if (transceiver.isDatachannel) { + sdp += 'm=application 0 DTLS/SCTP 5000\r\n' + + 'c=IN IP4 0.0.0.0\r\n' + + 'a=mid:' + transceiver.mid + '\r\n'; + return; + } + // Calculate intersection of capabilities. + var commonCapabilities = self._getCommonCapabilities( + transceiver.localCapabilities, + transceiver.remoteCapabilities); + + sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities, + 'answer', self.localStreams[0]); + }); + + var desc = new RTCSessionDescription({ + type: 'answer', + sdp: sdp + }); + if (arguments.length && typeof arguments[0] === 'function') { + window.setTimeout(arguments[0], 0, desc); + } + return Promise.resolve(desc); + }; + + window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) { + if (candidate === null) { + this.transceivers.forEach(function(transceiver) { + transceiver.iceTransport.addRemoteCandidate({}); + }); + } else { + var mLineIndex = candidate.sdpMLineIndex; + if (candidate.sdpMid) { + for (var i = 0; i < this.transceivers.length; i++) { + if (this.transceivers[i].mid === candidate.sdpMid) { + mLineIndex = i; + break; + } + } + } + var transceiver = this.transceivers[mLineIndex]; + if (transceiver) { + var cand = Object.keys(candidate.candidate).length > 0 ? + SDPUtils.parseCandidate(candidate.candidate) : {}; + // Ignore Chrome's invalid candidates since Edge does not like them. + if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) { + return; + } + // Ignore RTCP candidates, we assume RTCP-MUX. + if (cand.component !== '1') { + return; + } + // A dirty hack to make samples work. + if (cand.type === 'endOfCandidates') { + cand = {}; + } + transceiver.iceTransport.addRemoteCandidate(cand); + + // update the remoteDescription. + var sections = SDPUtils.splitSections(this.remoteDescription.sdp); + sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim() + : 'a=end-of-candidates') + '\r\n'; + this.remoteDescription.sdp = sections.join(''); + } + } + if (arguments.length > 1 && typeof arguments[1] === 'function') { + window.setTimeout(arguments[1], 0); + } + return Promise.resolve(); + }; + + window.RTCPeerConnection.prototype.getStats = function() { + var promises = []; + this.transceivers.forEach(function(transceiver) { + ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport', + 'dtlsTransport'].forEach(function(method) { + if (transceiver[method]) { + promises.push(transceiver[method].getStats()); + } + }); + }); + var cb = arguments.length > 1 && typeof arguments[1] === 'function' && + arguments[1]; + return new Promise(function(resolve) { + // shim getStats with maplike support + var results = new Map(); + Promise.all(promises).then(function(res) { + res.forEach(function(result) { + Object.keys(result).forEach(function(id) { + results.set(id, result[id]); + results[id] = result[id]; + }); + }); + if (cb) { + window.setTimeout(cb, 0, results); + } + resolve(results); + }); + }); + }; + } +}; + +// Expose public methods. +module.exports = { + shimPeerConnection: edgeShim.shimPeerConnection, + shimGetUserMedia: require('./getusermedia') +}; + +},{"../utils":128,"./getusermedia":124,"sdp":116}],124:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +// Expose public methods. +module.exports = function() { + var shimError_ = function(e) { + return { + name: {PermissionDeniedError: 'NotAllowedError'}[e.name] || e.name, + message: e.message, + constraint: e.constraint, + toString: function() { + return this.name; + } + }; + }; + + // getUserMedia error shim. + var origGetUserMedia = navigator.mediaDevices.getUserMedia. + bind(navigator.mediaDevices); + navigator.mediaDevices.getUserMedia = function(c) { + return origGetUserMedia(c).catch(function(e) { + return Promise.reject(shimError_(e)); + }); + }; +}; + +},{}],125:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +var browserDetails = require('../utils').browserDetails; + +var firefoxShim = { + shimOnTrack: function() { + if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in + window.RTCPeerConnection.prototype)) { + Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', { + get: function() { + return this._ontrack; + }, + set: function(f) { + if (this._ontrack) { + this.removeEventListener('track', this._ontrack); + this.removeEventListener('addstream', this._ontrackpoly); + } + this.addEventListener('track', this._ontrack = f); + this.addEventListener('addstream', this._ontrackpoly = function(e) { + e.stream.getTracks().forEach(function(track) { + var event = new Event('track'); + event.track = track; + event.receiver = {track: track}; + event.streams = [e.stream]; + this.dispatchEvent(event); + }.bind(this)); + }.bind(this)); + } + }); + } + }, + + shimSourceObject: function() { + // Firefox has supported mozSrcObject since FF22, unprefixed in 42. + if (typeof window === 'object') { + if (window.HTMLMediaElement && + !('srcObject' in window.HTMLMediaElement.prototype)) { + // Shim the srcObject property, once, when HTMLMediaElement is found. + Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', { + get: function() { + return this.mozSrcObject; + }, + set: function(stream) { + this.mozSrcObject = stream; + } + }); + } + } + }, + + shimPeerConnection: function() { + if (typeof window !== 'object' || !(window.RTCPeerConnection || + window.mozRTCPeerConnection)) { + return; // probably media.peerconnection.enabled=false in about:config + } + // The RTCPeerConnection object. + if (!window.RTCPeerConnection) { + window.RTCPeerConnection = function(pcConfig, pcConstraints) { + if (browserDetails.version < 38) { + // .urls is not supported in FF < 38. + // create RTCIceServers with a single url. + if (pcConfig && pcConfig.iceServers) { + var newIceServers = []; + for (var i = 0; i < pcConfig.iceServers.length; i++) { + var server = pcConfig.iceServers[i]; + if (server.hasOwnProperty('urls')) { + for (var j = 0; j < server.urls.length; j++) { + var newServer = { + url: server.urls[j] + }; + if (server.urls[j].indexOf('turn') === 0) { + newServer.username = server.username; + newServer.credential = server.credential; + } + newIceServers.push(newServer); + } + } else { + newIceServers.push(pcConfig.iceServers[i]); + } + } + pcConfig.iceServers = newIceServers; + } + } + return new mozRTCPeerConnection(pcConfig, pcConstraints); + }; + window.RTCPeerConnection.prototype = mozRTCPeerConnection.prototype; + + // wrap static methods. Currently just generateCertificate. + if (mozRTCPeerConnection.generateCertificate) { + Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', { + get: function() { + return mozRTCPeerConnection.generateCertificate; + } + }); + } + + window.RTCSessionDescription = mozRTCSessionDescription; + window.RTCIceCandidate = mozRTCIceCandidate; + } + + // shim away need for obsolete RTCIceCandidate/RTCSessionDescription. + ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] + .forEach(function(method) { + var nativeMethod = RTCPeerConnection.prototype[method]; + RTCPeerConnection.prototype[method] = function() { + arguments[0] = new ((method === 'addIceCandidate') ? + RTCIceCandidate : RTCSessionDescription)(arguments[0]); + return nativeMethod.apply(this, arguments); + }; + }); + + // support for addIceCandidate(null) + var nativeAddIceCandidate = + RTCPeerConnection.prototype.addIceCandidate; + RTCPeerConnection.prototype.addIceCandidate = function() { + if (arguments[0] === null) { + if (arguments[1]) { + arguments[1].apply(null); + } + return Promise.resolve(); + } + return nativeAddIceCandidate.apply(this, arguments); + }; + + // shim getStats with maplike support + var makeMapStats = function(stats) { + var map = new Map(); + Object.keys(stats).forEach(function(key) { + map.set(key, stats[key]); + map[key] = stats[key]; + }); + return map; + }; + + var nativeGetStats = RTCPeerConnection.prototype.getStats; + RTCPeerConnection.prototype.getStats = function(selector, onSucc, onErr) { + return nativeGetStats.apply(this, [selector || null]) + .then(function(stats) { + return makeMapStats(stats); + }) + .then(onSucc, onErr); + }; + } +}; + +// Expose public methods. +module.exports = { + shimOnTrack: firefoxShim.shimOnTrack, + shimSourceObject: firefoxShim.shimSourceObject, + shimPeerConnection: firefoxShim.shimPeerConnection, + shimGetUserMedia: require('./getusermedia') +}; + +},{"../utils":128,"./getusermedia":126}],126:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +var logging = require('../utils').log; +var browserDetails = require('../utils').browserDetails; + +// Expose public methods. +module.exports = function() { + var shimError_ = function(e) { + return { + name: { + SecurityError: 'NotAllowedError', + PermissionDeniedError: 'NotAllowedError' + }[e.name] || e.name, + message: { + 'The operation is insecure.': 'The request is not allowed by the ' + + 'user agent or the platform in the current context.' + }[e.message] || e.message, + constraint: e.constraint, + toString: function() { + return this.name + (this.message && ': ') + this.message; + } + }; + }; + + // getUserMedia constraints shim. + var getUserMedia_ = function(constraints, onSuccess, onError) { + var constraintsToFF37_ = function(c) { + if (typeof c !== 'object' || c.require) { + return c; + } + var require = []; + Object.keys(c).forEach(function(key) { + if (key === 'require' || key === 'advanced' || key === 'mediaSource') { + return; + } + var r = c[key] = (typeof c[key] === 'object') ? + c[key] : {ideal: c[key]}; + if (r.min !== undefined || + r.max !== undefined || r.exact !== undefined) { + require.push(key); + } + if (r.exact !== undefined) { + if (typeof r.exact === 'number') { + r. min = r.max = r.exact; + } else { + c[key] = r.exact; + } + delete r.exact; + } + if (r.ideal !== undefined) { + c.advanced = c.advanced || []; + var oc = {}; + if (typeof r.ideal === 'number') { + oc[key] = {min: r.ideal, max: r.ideal}; + } else { + oc[key] = r.ideal; + } + c.advanced.push(oc); + delete r.ideal; + if (!Object.keys(r).length) { + delete c[key]; + } + } + }); + if (require.length) { + c.require = require; + } + return c; + }; + constraints = JSON.parse(JSON.stringify(constraints)); + if (browserDetails.version < 38) { + logging('spec: ' + JSON.stringify(constraints)); + if (constraints.audio) { + constraints.audio = constraintsToFF37_(constraints.audio); + } + if (constraints.video) { + constraints.video = constraintsToFF37_(constraints.video); + } + logging('ff37: ' + JSON.stringify(constraints)); + } + return navigator.mozGetUserMedia(constraints, onSuccess, function(e) { + onError(shimError_(e)); + }); + }; + + // Returns the result of getUserMedia as a Promise. + var getUserMediaPromise_ = function(constraints) { + return new Promise(function(resolve, reject) { + getUserMedia_(constraints, resolve, reject); + }); + }; + + // Shim for mediaDevices on older versions. + if (!navigator.mediaDevices) { + navigator.mediaDevices = {getUserMedia: getUserMediaPromise_, + addEventListener: function() { }, + removeEventListener: function() { } + }; + } + navigator.mediaDevices.enumerateDevices = + navigator.mediaDevices.enumerateDevices || function() { + return new Promise(function(resolve) { + var infos = [ + {kind: 'audioinput', deviceId: 'default', label: '', groupId: ''}, + {kind: 'videoinput', deviceId: 'default', label: '', groupId: ''} + ]; + resolve(infos); + }); + }; + + if (browserDetails.version < 41) { + // Work around http://bugzil.la/1169665 + var orgEnumerateDevices = + navigator.mediaDevices.enumerateDevices.bind(navigator.mediaDevices); + navigator.mediaDevices.enumerateDevices = function() { + return orgEnumerateDevices().then(undefined, function(e) { + if (e.name === 'NotFoundError') { + return []; + } + throw e; + }); + }; + } + if (browserDetails.version < 49) { + var origGetUserMedia = navigator.mediaDevices.getUserMedia. + bind(navigator.mediaDevices); + navigator.mediaDevices.getUserMedia = function(c) { + return origGetUserMedia(c).then(function(stream) { + // Work around https://bugzil.la/802326 + if (c.audio && !stream.getAudioTracks().length || + c.video && !stream.getVideoTracks().length) { + stream.getTracks().forEach(function(track) { + track.stop(); + }); + throw new DOMException('The object can not be found here.', + 'NotFoundError'); + } + return stream; + }, function(e) { + return Promise.reject(shimError_(e)); + }); + }; + } + navigator.getUserMedia = function(constraints, onSuccess, onError) { + if (browserDetails.version < 44) { + return getUserMedia_(constraints, onSuccess, onError); + } + // Replace Firefox 44+'s deprecation warning with unprefixed version. + console.warn('navigator.getUserMedia has been replaced by ' + + 'navigator.mediaDevices.getUserMedia'); + navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError); + }; +}; + +},{"../utils":128}],127:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ +'use strict'; +var safariShim = { + // TODO: DrAlex, should be here, double check against LayoutTests + // shimOnTrack: function() { }, + + // TODO: once the back-end for the mac port is done, add. + // TODO: check for webkitGTK+ + // shimPeerConnection: function() { }, + + shimGetUserMedia: function() { + navigator.getUserMedia = navigator.webkitGetUserMedia; + } +}; + +// Expose public methods. +module.exports = { + shimGetUserMedia: safariShim.shimGetUserMedia + // TODO + // shimOnTrack: safariShim.shimOnTrack, + // shimPeerConnection: safariShim.shimPeerConnection +}; + +},{}],128:[function(require,module,exports){ +/* + * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. + */ + /* eslint-env node */ +'use strict'; + +var logDisabled_ = true; + +// Utility methods. +var utils = { + disableLog: function(bool) { + if (typeof bool !== 'boolean') { + return new Error('Argument type: ' + typeof bool + + '. Please use a boolean.'); + } + logDisabled_ = bool; + return (bool) ? 'adapter.js logging disabled' : + 'adapter.js logging enabled'; + }, + + log: function() { + if (typeof window === 'object') { + if (logDisabled_) { + return; + } + if (typeof console !== 'undefined' && typeof console.log === 'function') { + console.log.apply(console, arguments); + } + } + }, + + /** + * Extract browser version out of the provided user agent string. + * + * @param {!string} uastring userAgent string. + * @param {!string} expr Regular expression used as match criteria. + * @param {!number} pos position in the version string to be returned. + * @return {!number} browser version. + */ + extractVersion: function(uastring, expr, pos) { + var match = uastring.match(expr); + return match && match.length >= pos && parseInt(match[pos], 10); + }, + + /** + * Browser detector. + * + * @return {object} result containing browser and version + * properties. + */ + detectBrowser: function() { + // Returned result object. + var result = {}; + result.browser = null; + result.version = null; + + // Fail early if it's not a browser + if (typeof window === 'undefined' || !window.navigator) { + result.browser = 'Not a browser.'; + return result; + } + + // Firefox. + if (navigator.mozGetUserMedia) { + result.browser = 'firefox'; + result.version = this.extractVersion(navigator.userAgent, + /Firefox\/([0-9]+)\./, 1); + + // all webkit-based browsers + } else if (navigator.webkitGetUserMedia) { + // Chrome, Chromium, Webview, Opera, all use the chrome shim for now + if (window.webkitRTCPeerConnection) { + result.browser = 'chrome'; + result.version = this.extractVersion(navigator.userAgent, + /Chrom(e|ium)\/([0-9]+)\./, 2); + + // Safari or unknown webkit-based + // for the time being Safari has support for MediaStreams but not webRTC + } else { + // Safari UA substrings of interest for reference: + // - webkit version: AppleWebKit/602.1.25 (also used in Op,Cr) + // - safari UI version: Version/9.0.3 (unique to Safari) + // - safari UI webkit version: Safari/601.4.4 (also used in Op,Cr) + // + // if the webkit version and safari UI webkit versions are equals, + // ... this is a stable version. + // + // only the internal webkit version is important today to know if + // media streams are supported + // + if (navigator.userAgent.match(/Version\/(\d+).(\d+)/)) { + result.browser = 'safari'; + result.version = this.extractVersion(navigator.userAgent, + /AppleWebKit\/([0-9]+)\./, 1); + + // unknown webkit-based browser + } else { + result.browser = 'Unsupported webkit-based browser ' + + 'with GUM support but no WebRTC support.'; + return result; + } + } + + // Edge. + } else if (navigator.mediaDevices && + navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) { + result.browser = 'edge'; + result.version = this.extractVersion(navigator.userAgent, + /Edge\/(\d+).(\d+)$/, 2); + + // Default fallthrough: not supported. + } else { + result.browser = 'Not a supported browser.'; + return result; + } + + return result; + } +}; + +// Export. +module.exports = { + log: utils.log, + disableLog: utils.disableLog, + browserDetails: utils.detectBrowser(), + extractVersion: utils.extractVersion +}; + +},{}],129:[function(require,module,exports){ +(function (global){ +'use strict'; + +require('webrtc-adapter'); + +var _rtc_session = require('./rtc_session'); + +var _rtc_session2 = _interopRequireDefault(_rtc_session); + +var _rtc_const = require('./rtc_const'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * @license + * License info for uuid module assembled into js bundle: + * + * The MIT License (MIT) + * + * Copyright (c) 2010-2016 Robert Kieffer and other contributors + * + * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +global.connect = global.connect || {}; /** + * @license + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ +/** + * @license + * License info for webrtc-adapter module assembled into js bundle: + * + * Copyright (c) 2014, The WebRTC project authors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. + * + * Neither the name of Google nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * @license + * License info for sdp module assembled into js bundle: + * + * See https://www.npmjs.com/package/sdp + */ + +global.connect.RTCSession = _rtc_session2.default; +global.connect.RTCErrors = _rtc_const.RTC_ERRORS; + +global.lily = global.lily || {}; +global.lily.RTCSession = _rtc_session2.default; +global.lily.RTCErrors = _rtc_const.RTC_ERRORS; + +}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./rtc_const":131,"./rtc_session":132,"webrtc-adapter":120}],130:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.UnknownSignalingError = exports.UnknownSignalingErrorName = exports.CallNotFoundException = exports.CallNotFoundExceptionName = exports.BusyException = exports.BusyExceptionName = exports.UnsupportedOperation = exports.UnsupportedOperationExceptionName = exports.IllegalState = exports.IllegalStateExceptionName = exports.IllegalParameters = exports.IllegalParametersExceptionName = exports.GumTimeout = exports.GumTimeoutExceptionName = exports.Timeout = exports.TimeoutExceptionName = undefined; + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn'); + +var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2); + +var _inherits2 = require('babel-runtime/helpers/inherits'); + +var _inherits3 = _interopRequireDefault(_inherits2); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ +var TimeoutExceptionName = exports.TimeoutExceptionName = 'Timeout'; + +var Timeout = exports.Timeout = function (_Error) { + (0, _inherits3.default)(Timeout, _Error); + + function Timeout(msg) { + (0, _classCallCheck3.default)(this, Timeout); + + var _this = (0, _possibleConstructorReturn3.default)(this, (Timeout.__proto__ || Object.getPrototypeOf(Timeout)).call(this, msg)); + + _this.name = TimeoutExceptionName; + return _this; + } + + return Timeout; +}(Error); + +var GumTimeoutExceptionName = exports.GumTimeoutExceptionName = 'GumTimeout'; + +var GumTimeout = exports.GumTimeout = function (_Timeout) { + (0, _inherits3.default)(GumTimeout, _Timeout); + + function GumTimeout(msg) { + (0, _classCallCheck3.default)(this, GumTimeout); + + var _this2 = (0, _possibleConstructorReturn3.default)(this, (GumTimeout.__proto__ || Object.getPrototypeOf(GumTimeout)).call(this, msg)); + + _this2.name = GumTimeoutExceptionName; + return _this2; + } + + return GumTimeout; +}(Timeout); + +var IllegalParametersExceptionName = exports.IllegalParametersExceptionName = 'IllegalParameters'; + +var IllegalParameters = exports.IllegalParameters = function (_Error2) { + (0, _inherits3.default)(IllegalParameters, _Error2); + + function IllegalParameters(msg) { + (0, _classCallCheck3.default)(this, IllegalParameters); + + var _this3 = (0, _possibleConstructorReturn3.default)(this, (IllegalParameters.__proto__ || Object.getPrototypeOf(IllegalParameters)).call(this, msg)); + + _this3.name = IllegalParametersExceptionName; + return _this3; + } + + return IllegalParameters; +}(Error); + +var IllegalStateExceptionName = exports.IllegalStateExceptionName = 'IllegalState'; + +var IllegalState = exports.IllegalState = function (_Error3) { + (0, _inherits3.default)(IllegalState, _Error3); + + function IllegalState(msg) { + (0, _classCallCheck3.default)(this, IllegalState); + + var _this4 = (0, _possibleConstructorReturn3.default)(this, (IllegalState.__proto__ || Object.getPrototypeOf(IllegalState)).call(this, msg)); + + _this4.name = IllegalStateExceptionName; + return _this4; + } + + return IllegalState; +}(Error); + +var UnsupportedOperationExceptionName = exports.UnsupportedOperationExceptionName = 'UnsupportedOperation'; + +var UnsupportedOperation = exports.UnsupportedOperation = function (_Error4) { + (0, _inherits3.default)(UnsupportedOperation, _Error4); + + function UnsupportedOperation(msg) { + (0, _classCallCheck3.default)(this, UnsupportedOperation); + + var _this5 = (0, _possibleConstructorReturn3.default)(this, (UnsupportedOperation.__proto__ || Object.getPrototypeOf(UnsupportedOperation)).call(this, msg)); + + _this5.name = UnsupportedOperationExceptionName; + return _this5; + } + + return UnsupportedOperation; +}(Error); + +var BusyExceptionName = exports.BusyExceptionName = 'BusyException'; + +var BusyException = exports.BusyException = function (_Error5) { + (0, _inherits3.default)(BusyException, _Error5); + + function BusyException(msg) { + (0, _classCallCheck3.default)(this, BusyException); + + var _this6 = (0, _possibleConstructorReturn3.default)(this, (BusyException.__proto__ || Object.getPrototypeOf(BusyException)).call(this, msg)); + + _this6.name = BusyExceptionName; + return _this6; + } + + return BusyException; +}(Error); + +var CallNotFoundExceptionName = exports.CallNotFoundExceptionName = 'CallNotFoundException'; + +var CallNotFoundException = exports.CallNotFoundException = function (_Error6) { + (0, _inherits3.default)(CallNotFoundException, _Error6); + + function CallNotFoundException(msg) { + (0, _classCallCheck3.default)(this, CallNotFoundException); + + var _this7 = (0, _possibleConstructorReturn3.default)(this, (CallNotFoundException.__proto__ || Object.getPrototypeOf(CallNotFoundException)).call(this, msg)); + + _this7.name = CallNotFoundExceptionName; + return _this7; + } + + return CallNotFoundException; +}(Error); + +var UnknownSignalingErrorName = exports.UnknownSignalingErrorName = 'UnknownSignalingError'; + +var UnknownSignalingError = exports.UnknownSignalingError = function (_Error7) { + (0, _inherits3.default)(UnknownSignalingError, _Error7); + + function UnknownSignalingError() { + (0, _classCallCheck3.default)(this, UnknownSignalingError); + + var _this8 = (0, _possibleConstructorReturn3.default)(this, (UnknownSignalingError.__proto__ || Object.getPrototypeOf(UnknownSignalingError)).call(this)); + + _this8.name = UnknownSignalingErrorName; + return _this8; + } + + return UnknownSignalingError; +}(Error); + +},{"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/inherits":13,"babel-runtime/helpers/possibleConstructorReturn":14}],131:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ + +/** + * Timeout waiting for server response to accept/hangup request. + */ +var MAX_ACCEPT_BYE_DELAY_MS = exports.MAX_ACCEPT_BYE_DELAY_MS = 2000; +/** + * Timeout waiting for server response to invite. + */ +var MAX_INVITE_DELAY_MS = exports.MAX_INVITE_DELAY_MS = 5000; +/** + * Default timeout on opening WebSocket connection. + */ +var DEFAULT_CONNECT_TIMEOUT_MS = exports.DEFAULT_CONNECT_TIMEOUT_MS = 10000; +/** + * Default ice collection timeout in milliseconds. + */ +var DEFAULT_ICE_TIMEOUT_MS = exports.DEFAULT_ICE_TIMEOUT_MS = 8000; +/** + * Default gum timeout in milliseconds to be enforced during start of a call. + */ +var DEFAULT_GUM_TIMEOUT_MS = exports.DEFAULT_GUM_TIMEOUT_MS = 10000; + +/** + * RTC error names. + */ +var RTC_ERRORS = exports.RTC_ERRORS = { + ICE_COLLECTION_TIMEOUT: 'Ice Collection Timeout', + USER_BUSY: 'User Busy', + SIGNALLING_CONNECTION_FAILURE: 'Signalling Connection Failure', + SIGNALLING_HANDSHAKE_FAILURE: 'Signalling Handshake Failure', + SET_REMOTE_DESCRIPTION_FAILURE: 'Set Remote Description Failure', + CREATE_OFFER_FAILURE: 'Create Offer Failure', + SET_LOCAL_DESCRIPTION_FAILURE: 'Set Local Description Failure', + INVALID_REMOTE_SDP: 'Invalid Remote SDP', + NO_REMOTE_ICE_CANDIDATE: 'No Remote ICE Candidate', + GUM_TIMEOUT_FAILURE: 'GUM Timeout Failure', + GUM_OTHER_FAILURE: 'GUM Other Failure', + CALL_NOT_FOUND: 'Call Not Found' +}; + +},{}],132:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.FailedState = exports.DisconnectedState = exports.CleanUpState = exports.TalkingState = exports.AcceptState = exports.InviteAnswerState = exports.ConnectSignalingAndIceCollectionState = exports.SetLocalSessionDescriptionState = exports.CreateOfferState = exports.GrabLocalMediaState = exports.RTCSessionState = undefined; + +var _regenerator = require('babel-runtime/regenerator'); + +var _regenerator2 = _interopRequireDefault(_regenerator); + +var _asyncToGenerator2 = require('babel-runtime/helpers/asyncToGenerator'); + +var _asyncToGenerator3 = _interopRequireDefault(_asyncToGenerator2); + +var _typeof2 = require('babel-runtime/helpers/typeof'); + +var _typeof3 = _interopRequireDefault(_typeof2); + +var _get2 = require('babel-runtime/helpers/get'); + +var _get3 = _interopRequireDefault(_get2); + +var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn'); + +var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2); + +var _inherits2 = require('babel-runtime/helpers/inherits'); + +var _inherits3 = _interopRequireDefault(_inherits2); + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require('babel-runtime/helpers/createClass'); + +var _createClass3 = _interopRequireDefault(_createClass2); + +var _utils = require('./utils'); + +var _session_report = require('./session_report'); + +var _rtc_const = require('./rtc_const'); + +var _exceptions = require('./exceptions'); + +var _signaling = require('./signaling'); + +var _signaling2 = _interopRequireDefault(_signaling); + +var _v = require('uuid/v4'); + +var _v2 = _interopRequireDefault(_v); + +var _rtpStats = require('./rtp-stats'); + +var _sdp = require('sdp'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ +var RTCSessionState = exports.RTCSessionState = function () { + /** + * + * @param {RtcSession} rtcSession + */ + function RTCSessionState(rtcSession) { + (0, _classCallCheck3.default)(this, RTCSessionState); + + this._rtcSession = rtcSession; + } + + (0, _createClass3.default)(RTCSessionState, [{ + key: 'onEnter', + value: function onEnter() {} + }, { + key: 'onExit', + value: function onExit() {} + }, { + key: '_isCurrentState', + value: function _isCurrentState() { + return this._rtcSession._state === this; + } + }, { + key: 'transit', + value: function transit(nextState) { + if (this._isCurrentState()) { + this._rtcSession.transit(nextState); + } + } + }, { + key: 'hangup', + value: function hangup() { + this.transit(new FailedState(this._rtcSession)); + } + }, { + key: 'onIceCandidate', + value: function onIceCandidate(evt) {// eslint-disable-line no-unused-vars + //ignore candidate by default, ConnectSignalingAndIceCollectionState will override to collect candidates, but collecting process could last much longer than ConnectSignalingAndIceCollectionState + //we don't want to spam the console log + } + }, { + key: 'onRemoteHungup', + value: function onRemoteHungup() { + throw new _exceptions.UnsupportedOperation('onRemoteHungup not implemented by ' + this.name); + } + }, { + key: 'onSignalingConnected', + value: function onSignalingConnected() { + throw new _exceptions.UnsupportedOperation('onSignalingConnected not implemented by ' + this.name); + } + }, { + key: 'onSignalingHandshaked', + value: function onSignalingHandshaked() { + throw new _exceptions.UnsupportedOperation('onSignalingHandshaked not implemented by ' + this.name); + } + }, { + key: 'onSignalingFailed', + value: function onSignalingFailed(e) { + // eslint-disable-line no-unused-vars + throw new _exceptions.UnsupportedOperation('onSignalingFailed not implemented by ' + this.name); + } + }, { + key: 'onIceStateChange', + value: function onIceStateChange(evt) {// eslint-disable-line no-unused-vars + } + }, { + key: 'logger', + get: function get() { + return this._rtcSession._logger; + } + }, { + key: 'name', + get: function get() { + return "RTCSessionState"; + } + }]); + return RTCSessionState; +}(); + +var GrabLocalMediaState = exports.GrabLocalMediaState = function (_RTCSessionState) { + (0, _inherits3.default)(GrabLocalMediaState, _RTCSessionState); + + function GrabLocalMediaState() { + (0, _classCallCheck3.default)(this, GrabLocalMediaState); + return (0, _possibleConstructorReturn3.default)(this, (GrabLocalMediaState.__proto__ || Object.getPrototypeOf(GrabLocalMediaState)).apply(this, arguments)); + } + + (0, _createClass3.default)(GrabLocalMediaState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + var startTime = Date.now(); + if (self._rtcSession._userAudioStream) { + self.transit(new CreateOfferState(self._rtcSession)); + } else { + var gumTimeoutPromise = new Promise(function (resolve, reject) { + setTimeout(function () { + reject(new _exceptions.GumTimeout('Local media has not been initialized yet.')); + }, self._rtcSession._gumTimeoutMillis); + }); + var sessionGumPromise = self._gUM(self._rtcSession._buildMediaConstraints()); + + Promise.race([sessionGumPromise, gumTimeoutPromise]).then(function (stream) { + self._rtcSession._sessionReport.gumTimeMillis = Date.now() - startTime; + self._rtcSession._onGumSuccess(self._rtcSession); + self._rtcSession._localStream = stream; + self._rtcSession._sessionReport.gumOtherFailure = false; + self._rtcSession._sessionReport.gumTimeoutFailure = false; + self.transit(new CreateOfferState(self._rtcSession)); + }).catch(function (e) { + self._rtcSession._sessionReport.gumTimeMillis = Date.now() - startTime; + var errorReason; + if (e instanceof _exceptions.GumTimeout) { + errorReason = _rtc_const.RTC_ERRORS.GUM_TIMEOUT_FAILURE; + self._rtcSession._sessionReport.gumTimeoutFailure = true; + self._rtcSession._sessionReport.gumOtherFailure = false; + } else { + errorReason = _rtc_const.RTC_ERRORS.GUM_OTHER_FAILURE; + self._rtcSession._sessionReport.gumOtherFailure = true; + self._rtcSession._sessionReport.gumTimeoutFailure = false; + } + self.logger.error('Local media initialization failed', e); + self._rtcSession._onGumError(self._rtcSession); + self.transit(new FailedState(self._rtcSession, errorReason)); + }); + } + } + }, { + key: '_gUM', + value: function _gUM(constraints) { + return navigator.mediaDevices.getUserMedia(constraints); + } + }, { + key: 'name', + get: function get() { + return "GrabLocalMediaState"; + } + }]); + return GrabLocalMediaState; +}(RTCSessionState); + +var CreateOfferState = exports.CreateOfferState = function (_RTCSessionState2) { + (0, _inherits3.default)(CreateOfferState, _RTCSessionState2); + + function CreateOfferState() { + (0, _classCallCheck3.default)(this, CreateOfferState); + return (0, _possibleConstructorReturn3.default)(this, (CreateOfferState.__proto__ || Object.getPrototypeOf(CreateOfferState)).apply(this, arguments)); + } + + (0, _createClass3.default)(CreateOfferState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + var stream = self._rtcSession._localStream; + self._rtcSession._pc.addStream(stream); + self._rtcSession._onLocalStreamAdded(self._rtcSession, stream); + self._rtcSession._pc.createOffer().then(function (rtcSessionDescription) { + self._rtcSession._localSessionDescription = rtcSessionDescription; + self._rtcSession._sessionReport.createOfferFailure = false; + self.transit(new SetLocalSessionDescriptionState(self._rtcSession)); + }).catch(function (e) { + self.logger.error('CreateOffer failed', e); + self._rtcSession._sessionReport.createOfferFailure = true; + self.transit(new FailedState(self._rtcSession, _rtc_const.RTC_ERRORS.CREATE_OFFER_FAILURE)); + }); + } + }, { + key: 'name', + get: function get() { + return "CreateOfferState"; + } + }]); + return CreateOfferState; +}(RTCSessionState); + +var SetLocalSessionDescriptionState = exports.SetLocalSessionDescriptionState = function (_RTCSessionState3) { + (0, _inherits3.default)(SetLocalSessionDescriptionState, _RTCSessionState3); + + function SetLocalSessionDescriptionState() { + (0, _classCallCheck3.default)(this, SetLocalSessionDescriptionState); + return (0, _possibleConstructorReturn3.default)(this, (SetLocalSessionDescriptionState.__proto__ || Object.getPrototypeOf(SetLocalSessionDescriptionState)).apply(this, arguments)); + } + + (0, _createClass3.default)(SetLocalSessionDescriptionState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + + // fix/modify SDP as needed here, before setLocalDescription + var localDescription = self._rtcSession._localSessionDescription; + var sdpOptions = new _utils.SdpOptions(); + // Set audio codec. + if (self._rtcSession._forceAudioCodec) { + sdpOptions.forceCodec['audio'] = self._rtcSession._forceAudioCodec; + } + // Set video codec. + if (self._rtcSession._forceVideoCodec) { + sdpOptions.forceCodec['video'] = self._rtcSession._forceVideoCodec; + } + sdpOptions.enableOpusDtx = self._rtcSession._enableOpusDtx; + + var transformedSdp = (0, _utils.transformSdp)(localDescription.sdp, sdpOptions); + localDescription.sdp = transformedSdp.sdp; + + self.logger.info('LocalSD', self._rtcSession._localSessionDescription); + self._rtcSession._pc.setLocalDescription(self._rtcSession._localSessionDescription).then(function () { + var initializationTime = Date.now() - self._rtcSession._connectTimeStamp; + self._rtcSession._sessionReport.initializationTimeMillis = initializationTime; + self._rtcSession._onSessionInitialized(self._rtcSession, initializationTime); + self._rtcSession._sessionReport.setLocalDescriptionFailure = false; + self.transit(new ConnectSignalingAndIceCollectionState(self._rtcSession, transformedSdp.mLines)); + }).catch(function (e) { + self.logger.error('SetLocalDescription failed', e); + self._rtcSession._sessionReport.setLocalDescriptionFailure = true; + self.transit(new FailedState(self._rtcSession, _rtc_const.RTC_ERRORS.SET_LOCAL_DESCRIPTION_FAILURE)); + }); + } + }, { + key: 'name', + get: function get() { + return "SetLocalSessionDescriptionState"; + } + }]); + return SetLocalSessionDescriptionState; +}(RTCSessionState); + +/** + * Kick off signaling connection. Wait until signaling connects and ICE collection (which already started in previous state) completes. + * ICE collection times out after user specified amount of time (default to DEFAULT_ICE_TIMEOUT_MS) in case user has complex network environment that blackholes STUN/TURN requests. In this case at least one candidate is required to move forward. + * ICE collection could also wrap up before timeout if it's determined that RTP candidates from same TURN server have been collected for all m lines. + */ + + +var ConnectSignalingAndIceCollectionState = exports.ConnectSignalingAndIceCollectionState = function (_RTCSessionState4) { + (0, _inherits3.default)(ConnectSignalingAndIceCollectionState, _RTCSessionState4); + + /** + * Create ConnectSignalingAndIceCollectionState object. + * @param {RtcSession} rtcSession + * @param {number} mLines Number of m lines in SDP + */ + function ConnectSignalingAndIceCollectionState(rtcSession, mLines) { + (0, _classCallCheck3.default)(this, ConnectSignalingAndIceCollectionState); + + var _this4 = (0, _possibleConstructorReturn3.default)(this, (ConnectSignalingAndIceCollectionState.__proto__ || Object.getPrototypeOf(ConnectSignalingAndIceCollectionState)).call(this, rtcSession)); + + _this4._iceCandidates = []; + _this4._iceCandidateFoundationsMap = {}; + _this4._mLines = mLines; + return _this4; + } + + (0, _createClass3.default)(ConnectSignalingAndIceCollectionState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + self._startTime = Date.now(); + setTimeout(function () { + if (self._isCurrentState() && !self._iceCompleted) { + self.logger.warn('ICE collection timed out'); + self._reportIceCompleted(true); + } + }, self._rtcSession._iceTimeoutMillis); + self._rtcSession._createSignalingChannel().connect(); + } + }, { + key: 'onSignalingConnected', + value: function onSignalingConnected() { + this._rtcSession._signallingConnectTimestamp = Date.now(); + this._rtcSession._sessionReport.signallingConnectTimeMillis = this._rtcSession._signallingConnectTimestamp - this._startTime; + this._signalingConnected = true; + this._rtcSession._onSignalingConnected(this._rtcSession); + this._rtcSession._sessionReport.signallingConnectionFailure = false; + this._checkAndTransit(); + } + }, { + key: 'onSignalingFailed', + value: function onSignalingFailed(e) { + this._rtcSession._sessionReport.signallingConnectTimeMillis = Date.now() - this._startTime; + this.logger.error('Failed connecting to signaling server', e); + this._rtcSession._sessionReport.signallingConnectionFailure = true; + this.transit(new FailedState(this._rtcSession, _rtc_const.RTC_ERRORS.SIGNALLING_CONNECTION_FAILURE)); + } + }, { + key: '_createLocalCandidate', + value: function _createLocalCandidate(initDict) { + return new RTCIceCandidate(initDict); + } + }, { + key: 'onIceCandidate', + value: function onIceCandidate(evt) { + var candidate = evt.candidate; + this.logger.log('onicecandidate ' + JSON.stringify(candidate)); + if (candidate) { + this._iceCandidates.push(this._createLocalCandidate(candidate)); + + if (!this._iceCompleted) { + this._checkCandidatesSufficient(candidate); + } + } else { + this._reportIceCompleted(false); + } + } + }, { + key: '_checkCandidatesSufficient', + value: function _checkCandidatesSufficient(candidate) { + //check if we collected sufficient candidates from single media server to start the call + var candidateObj = (0, _sdp.parseCandidate)(candidate.candidate); + if (candidateObj.component != 1) { + return; + } + var candidateFoundation = candidateObj.foundation; + var candidateMLineIndex = candidate.sdpMLineIndex; + if (candidateFoundation && candidateMLineIndex >= 0 && candidateMLineIndex < this._mLines) { + var mIndexList = this._iceCandidateFoundationsMap[candidateFoundation] || []; + if (!mIndexList.includes(candidateMLineIndex)) { + mIndexList.push(candidateMLineIndex); + } + this._iceCandidateFoundationsMap[candidateFoundation] = mIndexList; + + if (this._mLines == mIndexList.length) { + this._reportIceCompleted(false); + } + } + } + }, { + key: '_reportIceCompleted', + value: function _reportIceCompleted(isTimeout) { + this._rtcSession._sessionReport.iceCollectionTimeMillis = Date.now() - this._startTime; + this._iceCompleted = true; + this._rtcSession._onIceCollectionComplete(this._rtcSession, isTimeout, this._iceCandidates.length); + if (this._iceCandidates.length > 0) { + this._rtcSession._sessionReport.iceCollectionFailure = false; + this._checkAndTransit(); + } else { + this.logger.error('No ICE candidate'); + this._rtcSession._sessionReport.iceCollectionFailure = true; + this.transit(new FailedState(this._rtcSession, _rtc_const.RTC_ERRORS.ICE_COLLECTION_TIMEOUT)); + } + } + }, { + key: '_checkAndTransit', + value: function _checkAndTransit() { + if (this._iceCompleted && this._signalingConnected) { + this.transit(new InviteAnswerState(this._rtcSession, this._iceCandidates)); + } else if (!this._iceCompleted) { + this.logger.log('Pending ICE collection'); + } else { + //implies _signalingConnected == false + this.logger.log('Pending signaling connection'); + } + } + }, { + key: 'name', + get: function get() { + return "ConnectSignalingAndIceCollectionState"; + } + }]); + return ConnectSignalingAndIceCollectionState; +}(RTCSessionState); + +var InviteAnswerState = exports.InviteAnswerState = function (_RTCSessionState5) { + (0, _inherits3.default)(InviteAnswerState, _RTCSessionState5); + + function InviteAnswerState(rtcSession, iceCandidates) { + (0, _classCallCheck3.default)(this, InviteAnswerState); + + var _this5 = (0, _possibleConstructorReturn3.default)(this, (InviteAnswerState.__proto__ || Object.getPrototypeOf(InviteAnswerState)).call(this, rtcSession)); + + _this5._iceCandidates = iceCandidates; + return _this5; + } + + (0, _createClass3.default)(InviteAnswerState, [{ + key: 'onEnter', + value: function onEnter() { + var rtcSession = this._rtcSession; + rtcSession._onSignalingStarted(rtcSession); + rtcSession._signalingChannel.invite(rtcSession._localSessionDescription.sdp, this._iceCandidates); + } + }, { + key: 'onSignalingAnswered', + value: function onSignalingAnswered(sdp, candidates) { + this._rtcSession._sessionReport.userBusyFailure = false; + this._rtcSession._sessionReport.handshakingFailure = false; + this.transit(new AcceptState(this._rtcSession, sdp, candidates)); + } + }, { + key: 'onSignalingFailed', + value: function onSignalingFailed(e) { + var reason; + if (e.name == _exceptions.BusyExceptionName) { + this.logger.error('User Busy, possibly multiple CCP windows open', e); + this._rtcSession._sessionReport.userBusyFailure = true; + this._rtcSession._sessionReport.handshakingFailure = true; + reason = _rtc_const.RTC_ERRORS.USER_BUSY; + } else if (e.name == _exceptions.CallNotFoundExceptionName) { + this.logger.error('Call not found. One of the participant probably hungup.', e); + reason = _rtc_const.RTC_ERRORS.CALL_NOT_FOUND; + this._rtcSession._sessionReport.handshakingFailure = true; + } else { + this.logger.error('Failed handshaking with signaling server', e); + this._rtcSession._sessionReport.userBusyFailure = false; + this._rtcSession._sessionReport.handshakingFailure = true; + reason = _rtc_const.RTC_ERRORS.SIGNALLING_HANDSHAKE_FAILURE; + } + this.transit(new FailedState(this._rtcSession, reason)); + } + }, { + key: 'name', + get: function get() { + return "InviteAnswerState"; + } + }]); + return InviteAnswerState; +}(RTCSessionState); + +var AcceptState = exports.AcceptState = function (_RTCSessionState6) { + (0, _inherits3.default)(AcceptState, _RTCSessionState6); + + function AcceptState(rtcSession, sdp, candidates) { + (0, _classCallCheck3.default)(this, AcceptState); + + var _this6 = (0, _possibleConstructorReturn3.default)(this, (AcceptState.__proto__ || Object.getPrototypeOf(AcceptState)).call(this, rtcSession)); + + _this6._sdp = sdp; + _this6._candidates = candidates; + return _this6; + } + + (0, _createClass3.default)(AcceptState, [{ + key: '_createSessionDescription', + value: function _createSessionDescription(initDict) { + return new RTCSessionDescription(initDict); + } + }, { + key: '_createRemoteCandidate', + value: function _createRemoteCandidate(initDict) { + return new RTCIceCandidate(initDict); + } + }, { + key: 'onEnter', + value: function onEnter() { + var self = this; + var rtcSession = self._rtcSession; + + if (!self._sdp) { + self.logger.error('Invalid remote SDP'); + rtcSession._stopSession(); + rtcSession._sessionReport.invalidRemoteSDPFailure = true; + self.transit(new FailedState(rtcSession, _rtc_const.RTC_ERRORS.INVALID_REMOTE_SDP)); + return; + } else if (!self._candidates || self._candidates.length < 1) { + self.logger.error('No remote ICE candidate'); + rtcSession._stopSession(); + rtcSession._sessionReport.noRemoteIceCandidateFailure = true; + self.transit(new FailedState(rtcSession, _rtc_const.RTC_ERRORS.NO_REMOTE_ICE_CANDIDATE)); + return; + } + + rtcSession._sessionReport.invalidRemoteSDPFailure = false; + rtcSession._sessionReport.noRemoteIceCandidateFailure = false; + var setRemoteDescriptionPromise = rtcSession._pc.setRemoteDescription(self._createSessionDescription({ + type: 'answer', + sdp: self._sdp + })); + setRemoteDescriptionPromise.catch(function (e) { + self.logger.error('SetRemoteDescription failed', e); + }); + setRemoteDescriptionPromise.then(function () { + var remoteCandidatePromises = Promise.all(self._candidates.map(function (candidate) { + var remoteCandidate = self._createRemoteCandidate(candidate); + self.logger.info('Adding remote candidate', remoteCandidate); + return rtcSession._pc.addIceCandidate(remoteCandidate); + })); + remoteCandidatePromises.catch(function (reason) { + self.logger.warn('Error adding remote candidate', reason); + }); + return remoteCandidatePromises; + }).then(function () { + rtcSession._sessionReport.setRemoteDescriptionFailure = false; + self._remoteDescriptionSet = true; + self._checkAndTransit(); + }).catch(function () { + rtcSession._stopSession(); + rtcSession._sessionReport.setRemoteDescriptionFailure = true; + self.transit(new FailedState(rtcSession, _rtc_const.RTC_ERRORS.SET_REMOTE_DESCRIPTION_FAILURE)); + }); + } + }, { + key: 'onSignalingHandshaked', + value: function onSignalingHandshaked() { + this._rtcSession._sessionReport.handshakingTimeMillis = Date.now() - this._rtcSession._signallingConnectTimestamp; + this._signalingHandshaked = true; + this._checkAndTransit(); + } + }, { + key: '_checkAndTransit', + value: function _checkAndTransit() { + if (this._signalingHandshaked && this._remoteDescriptionSet) { + this.transit(new TalkingState(this._rtcSession)); + } else if (!this._signalingHandshaked) { + this.logger.log('Pending handshaking'); + } else { + //implies _remoteDescriptionSet == false + this.logger.log('Pending setting remote description'); + } + } + }, { + key: 'name', + get: function get() { + return "AcceptState"; + } + }]); + return AcceptState; +}(RTCSessionState); + +var TalkingState = exports.TalkingState = function (_RTCSessionState7) { + (0, _inherits3.default)(TalkingState, _RTCSessionState7); + + function TalkingState() { + (0, _classCallCheck3.default)(this, TalkingState); + return (0, _possibleConstructorReturn3.default)(this, (TalkingState.__proto__ || Object.getPrototypeOf(TalkingState)).apply(this, arguments)); + } + + (0, _createClass3.default)(TalkingState, [{ + key: 'onEnter', + value: function onEnter() { + this._startTime = Date.now(); + this._rtcSession._sessionReport.preTalkingTimeMillis = this._startTime - this._rtcSession._connectTimeStamp; + this._rtcSession._onSessionConnected(this._rtcSession); + } + }, { + key: 'onSignalingReconnected', + value: function onSignalingReconnected() {} + }, { + key: 'onRemoteHungup', + value: function onRemoteHungup() { + this._rtcSession._signalingChannel.hangup(); + this.transit(new DisconnectedState(this._rtcSession)); + } + }, { + key: 'hangup', + value: function hangup() { + this._rtcSession._signalingChannel.hangup(); + this.transit(new DisconnectedState(this._rtcSession)); + } + }, { + key: 'onIceStateChange', + value: function onIceStateChange(evt) { + if (evt.currentTarget.iceConnectionState == 'disconnected') { + this.logger.info('Lost ICE connection'); + this._rtcSession._sessionReport.iceConnectionsLost += 1; + } + } + }, { + key: 'onExit', + value: function onExit() { + this._rtcSession._sessionReport.talkingTimeMillis = Date.now() - this._startTime; + this._rtcSession._detachMedia(); + this._rtcSession._sessionReport.sessionEndTime = new Date(); + this._rtcSession._onSessionCompleted(this._rtcSession); + } + }, { + key: 'name', + get: function get() { + return "TalkingState"; + } + }]); + return TalkingState; +}(RTCSessionState); + +var CleanUpState = exports.CleanUpState = function (_RTCSessionState8) { + (0, _inherits3.default)(CleanUpState, _RTCSessionState8); + + function CleanUpState() { + (0, _classCallCheck3.default)(this, CleanUpState); + return (0, _possibleConstructorReturn3.default)(this, (CleanUpState.__proto__ || Object.getPrototypeOf(CleanUpState)).apply(this, arguments)); + } + + (0, _createClass3.default)(CleanUpState, [{ + key: 'onEnter', + value: function onEnter() { + this._startTime = Date.now(); + this._rtcSession._stopSession(); + this._rtcSession._sessionReport.cleanupTimeMillis = Date.now() - this._startTime; + this._rtcSession._onSessionDestroyed(this._rtcSession, this._rtcSession._sessionReport); + } + }, { + key: 'hangup', + value: function hangup() { + //do nothing, already at the end of lifecycle + } + }, { + key: 'name', + get: function get() { + return "CleanUpState"; + } + }]); + return CleanUpState; +}(RTCSessionState); + +var DisconnectedState = exports.DisconnectedState = function (_CleanUpState) { + (0, _inherits3.default)(DisconnectedState, _CleanUpState); + + function DisconnectedState() { + (0, _classCallCheck3.default)(this, DisconnectedState); + return (0, _possibleConstructorReturn3.default)(this, (DisconnectedState.__proto__ || Object.getPrototypeOf(DisconnectedState)).apply(this, arguments)); + } + + (0, _createClass3.default)(DisconnectedState, [{ + key: 'name', + get: function get() { + return "DisconnectedState"; + } + }]); + return DisconnectedState; +}(CleanUpState); + +var FailedState = exports.FailedState = function (_CleanUpState2) { + (0, _inherits3.default)(FailedState, _CleanUpState2); + + function FailedState(rtcSession, failureReason) { + (0, _classCallCheck3.default)(this, FailedState); + + var _this10 = (0, _possibleConstructorReturn3.default)(this, (FailedState.__proto__ || Object.getPrototypeOf(FailedState)).call(this, rtcSession)); + + _this10._failureReason = failureReason; + return _this10; + } + + (0, _createClass3.default)(FailedState, [{ + key: 'onEnter', + value: function onEnter() { + this._rtcSession._sessionReport.sessionEndTime = new Date(); + this._rtcSession._onSessionFailed(this._rtcSession, this._failureReason); + (0, _get3.default)(FailedState.prototype.__proto__ || Object.getPrototypeOf(FailedState.prototype), 'onEnter', this).call(this); + } + }, { + key: 'name', + get: function get() { + return "FailedState"; + } + }]); + return FailedState; +}(CleanUpState); + +var RtcSession = function () { + /** + * Build an AmazonConnect RTC session. + * @param {*} signalingUri + * @param {*} iceServers Array of ice servers + * @param {*} contactToken A string representing the contact token (optional) + * @param {*} logger An object provides logging functions, such as console + * @param {*} contactId Must be UUID, uniquely identifies the session. + */ + function RtcSession(signalingUri, iceServers, contactToken, logger, contactId) { + (0, _classCallCheck3.default)(this, RtcSession); + + if (typeof signalingUri !== 'string' || signalingUri.trim().length === 0) { + throw new _exceptions.IllegalParameters('signalingUri required'); + } + if (!iceServers) { + throw new _exceptions.IllegalParameters('iceServers required'); + } + if ((typeof logger === 'undefined' ? 'undefined' : (0, _typeof3.default)(logger)) !== 'object') { + throw new _exceptions.IllegalParameters('logger required'); + } + if (!contactId) { + this._callId = (0, _v2.default)(); + } else { + this._callId = contactId; + } + + this._sessionReport = new _session_report.SessionReport(); + this._signalingUri = signalingUri; + this._iceServers = iceServers; + this._contactToken = contactToken; + this._originalLogger = logger; + this._logger = (0, _utils.wrapLogger)(this._originalLogger, this._callId, 'SESSION'); + this._iceTimeoutMillis = _rtc_const.DEFAULT_ICE_TIMEOUT_MS; + this._gumTimeoutMillis = _rtc_const.DEFAULT_GUM_TIMEOUT_MS; + + this._enableAudio = true; + this._enableVideo = false; + this._facingMode = 'user'; + + /** + * user may provide the stream to the RtcSession directly to connect to the other end. + * user may also acquire the stream from the local device. + * This flag is used to track where the stream is acquired. + * If it's acquired from local devices, then we must close the stream when the session ends. + * If it's provided by user (rather than local camera/microphone), then we should leave it open when the + * session ends. + */ + this._userProvidedStream = false; + + this._onGumError = this._onGumSuccess = this._onLocalStreamAdded = this._onSessionFailed = this._onSessionInitialized = this._onSignalingConnected = this._onIceCollectionComplete = this._onSignalingStarted = this._onSessionConnected = this._onRemoteStreamAdded = this._onSessionCompleted = this._onSessionDestroyed = function () {}; + } + + (0, _createClass3.default)(RtcSession, [{ + key: 'pauseLocalVideo', + value: function pauseLocalVideo() { + if (this._localStream) { + var videoTrack = this._localStream.getVideoTracks()[0]; + if (videoTrack) { + videoTrack.enabled = false; + } + } + } + }, { + key: 'resumeLocalVideo', + value: function resumeLocalVideo() { + if (this._localStream) { + var videoTrack = this._localStream.getVideoTracks()[0]; + if (videoTrack) { + videoTrack.enabled = true; + } + } + } + }, { + key: 'pauseRemoteVideo', + value: function pauseRemoteVideo() { + if (this._remoteVideoStream) { + var videoTrack = this._remoteVideoStream.getTracks()[1]; + if (videoTrack) { + videoTrack.enabled = false; + } + } + } + }, { + key: 'resumeRemoteVideo', + value: function resumeRemoteVideo() { + if (this._remoteVideoStream) { + var videoTrack = this._remoteVideoStream.getTracks()[1]; + if (videoTrack) { + videoTrack.enabled = true; + } + } + } + }, { + key: 'pauseLocalAudio', + value: function pauseLocalAudio() { + if (this._localStream) { + var audioTrack = this._localStream.getAudioTracks()[0]; + if (audioTrack) { + audioTrack.enabled = false; + } + } + } + }, { + key: 'resumeLocalAudio', + value: function resumeLocalAudio() { + if (this._localStream) { + var audioTrack = this._localStream.getAudioTracks()[0]; + if (audioTrack) { + audioTrack.enabled = true; + } + } + } + }, { + key: 'pauseRemoteAudio', + value: function pauseRemoteAudio() { + if (this._remoteAudioStream) { + var audioTrack = this._remoteAudioStream.getTracks()[0]; + if (audioTrack) { + audioTrack.enabled = false; + } + } + } + }, { + key: 'resumeRemoteAudio', + value: function resumeRemoteAudio() { + if (this._remoteAudioStream) { + var audioTrack = this._remoteAudioStream.getTracks()[0]; + if (audioTrack) { + audioTrack.enabled = true; + } + } + } + /** + * Callback when gUM succeeds. + * First param is RtcSession object. + */ + + }, { + key: 'transit', + value: function transit(nextState) { + try { + this._logger.info((this._state ? this._state.name : 'null') + ' => ' + nextState.name); + if (this._state && this._state.onExit) { + this._state.onExit(); + } + } finally { + this._state = nextState; + if (nextState.onEnter) { + try { + nextState.onEnter(); + } catch (e) { + this._logger.warn(nextState.name + '#onEnter failed', e); + throw e; // eslint-disable-line no-unsafe-finally + } + } + } + } + }, { + key: '_createSignalingChannel', + value: function _createSignalingChannel() { + var signalingChannel = new _signaling2.default(this._callId, this._signalingUri, this._contactToken, this._originalLogger, this._signalingConnectTimeout); + signalingChannel.onConnected = (0, _utils.hitch)(this, this._signalingConnected); + signalingChannel.onAnswered = (0, _utils.hitch)(this, this._signalingAnswered); + signalingChannel.onHandshaked = (0, _utils.hitch)(this, this._signalingHandshaked); + signalingChannel.onRemoteHungup = (0, _utils.hitch)(this, this._signalingRemoteHungup); + signalingChannel.onFailed = (0, _utils.hitch)(this, this._signalingFailed); + signalingChannel.onDisconnected = (0, _utils.hitch)(this, this._signalingDisconnected); + + this._signalingChannel = signalingChannel; + + return signalingChannel; + } + }, { + key: '_signalingConnected', + value: function _signalingConnected() { + this._state.onSignalingConnected(); + } + }, { + key: '_signalingAnswered', + value: function _signalingAnswered(sdp, candidates) { + this._state.onSignalingAnswered(sdp, candidates); + } + }, { + key: '_signalingHandshaked', + value: function _signalingHandshaked() { + this._state.onSignalingHandshaked(); + } + }, { + key: '_signalingRemoteHungup', + value: function _signalingRemoteHungup() { + this._state.onRemoteHungup(); + } + }, { + key: '_signalingFailed', + value: function _signalingFailed(e) { + this._state.onSignalingFailed(e); + } + }, { + key: '_signalingDisconnected', + value: function _signalingDisconnected() {} + }, { + key: '_createPeerConnection', + value: function _createPeerConnection(configuration) { + return new RTCPeerConnection(configuration); + } + }, { + key: 'connect', + value: function connect() { + var self = this; + var now = new Date(); + self._sessionReport.sessionStartTime = now; + self._connectTimeStamp = now.getTime(); + + self._pc = self._createPeerConnection({ + iceServers: self._iceServers, + iceTransportPolicy: 'relay', + rtcpMuxPolicy: 'require', + bundlePolicy: 'balanced', + sdpSemantics: 'plan-b' + }, { + optional: [{ + googDscp: true + }] + }); + + self._pc.ontrack = (0, _utils.hitch)(self, self._ontrack); + self._pc.onicecandidate = (0, _utils.hitch)(self, self._onIceCandidate); + self._pc.oniceconnectionstatechange = (0, _utils.hitch)(self, self._onIceStateChange); + + self.transit(new GrabLocalMediaState(self)); + } + }, { + key: 'accept', + value: function accept() { + throw new _exceptions.UnsupportedOperation('accept does not go through signaling channel at this moment'); + } + }, { + key: 'hangup', + value: function hangup() { + this._state.hangup(); + } + + /** + * Get a promise containing an object with two named lists of audio stats, one for each channel on each + * media type of 'video' and 'audio'. + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + */ + + }, { + key: 'getStats', + value: function () { + var _ref = (0, _asyncToGenerator3.default)( /*#__PURE__*/_regenerator2.default.mark(function _callee3() { + var _this11 = this; + + var timestamp, impl, statsResult, rttReducer, audioInputRttMilliseconds, videoInputRttMilliseconds; + return _regenerator2.default.wrap(function _callee3$(_context3) { + while (1) { + switch (_context3.prev = _context3.next) { + case 0: + timestamp = new Date(); + + impl = function () { + var _ref2 = (0, _asyncToGenerator3.default)( /*#__PURE__*/_regenerator2.default.mark(function _callee2(stream, streamType) { + var tracks; + return _regenerator2.default.wrap(function _callee2$(_context2) { + while (1) { + switch (_context2.prev = _context2.next) { + case 0: + tracks = []; + + if (stream) { + _context2.next = 3; + break; + } + + return _context2.abrupt('return', []); + + case 3: + _context2.t0 = streamType; + _context2.next = _context2.t0 === 'audio_input' ? 6 : _context2.t0 === 'audio_output' ? 6 : _context2.t0 === 'video_input' ? 8 : _context2.t0 === 'video_output' ? 8 : 10; + break; + + case 6: + tracks = stream.getAudioTracks(); + return _context2.abrupt('break', 11); + + case 8: + tracks = stream.getVideoTracks(); + return _context2.abrupt('break', 11); + + case 10: + throw new Error('Unsupported stream type while trying to get stats: ' + streamType); + + case 11: + _context2.next = 13; + return Promise.all(tracks.map(function () { + var _ref3 = (0, _asyncToGenerator3.default)( /*#__PURE__*/_regenerator2.default.mark(function _callee(track) { + var rawStats, digestedStats; + return _regenerator2.default.wrap(function _callee$(_context) { + while (1) { + switch (_context.prev = _context.next) { + case 0: + _context.next = 2; + return _this11._pc.getStats(track); + + case 2: + rawStats = _context.sent; + digestedStats = (0, _rtpStats.extractMediaStatsFromStats)(timestamp, rawStats, streamType); + + if (digestedStats) { + _context.next = 6; + break; + } + + throw new Error('Failed to extract MediaRtpStats from RTCStatsReport for stream type ' + streamType); + + case 6: + return _context.abrupt('return', digestedStats); + + case 7: + case 'end': + return _context.stop(); + } + } + }, _callee, _this11); + })); + + return function (_x3) { + return _ref3.apply(this, arguments); + }; + }())); + + case 13: + return _context2.abrupt('return', _context2.sent); + + case 14: + case 'end': + return _context2.stop(); + } + } + }, _callee2, _this11); + })); + + return function impl(_x, _x2) { + return _ref2.apply(this, arguments); + }; + }(); + + if (!(this._pc && this._pc.signalingState === 'stable')) { + _context3.next = 26; + break; + } + + _context3.next = 5; + return impl(this._remoteAudioStream, 'audio_input'); + + case 5: + _context3.t0 = _context3.sent; + _context3.next = 8; + return impl(this._localStream, 'audio_output'); + + case 8: + _context3.t1 = _context3.sent; + _context3.t2 = { + input: _context3.t0, + output: _context3.t1 + }; + _context3.next = 12; + return impl(this._remoteVideoStream, 'video_input'); + + case 12: + _context3.t3 = _context3.sent; + _context3.next = 15; + return impl(this._localStream, 'video_output'); + + case 15: + _context3.t4 = _context3.sent; + _context3.t5 = { + input: _context3.t3, + output: _context3.t4 + }; + statsResult = { + audio: _context3.t2, + video: _context3.t5 + }; + + // For consistency's sake, coalesce rttMilliseconds into the output for audio and video. + rttReducer = function rttReducer(acc, stats) { + if (stats.rttMilliseconds !== null && (acc === null || stats.rttMilliseconds > acc)) { + acc = stats.rttMilliseconds; + } + stats._rttMilliseconds = null; + return acc; + }; + + audioInputRttMilliseconds = statsResult.audio.input.reduce(rttReducer, null); + videoInputRttMilliseconds = statsResult.video.input.reduce(rttReducer, null); + + + if (audioInputRttMilliseconds !== null) { + statsResult.audio.output.forEach(function (stats) { + stats._rttMilliseconds = audioInputRttMilliseconds; + }); + } + + if (videoInputRttMilliseconds !== null) { + statsResult.video.output.forEach(function (stats) { + stats._rttMilliseconds = videoInputRttMilliseconds; + }); + } + + return _context3.abrupt('return', statsResult); + + case 26: + return _context3.abrupt('return', Promise.reject(new _exceptions.IllegalState())); + + case 27: + case 'end': + return _context3.stop(); + } + } + }, _callee3, this); + })); + + function getStats() { + return _ref.apply(this, arguments); + } + + return getStats; + }() + + /** + * Get a promise of MediaRtpStats object for remote audio (from Amazon Connect to client). + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + * @deprecated in favor of getStats() + */ + + }, { + key: 'getRemoteAudioStats', + value: function getRemoteAudioStats() { + return this.getStats().then(function (stats) { + if (stats.audio.output.length > 0) { + return stats.audio.output[0]; + } else { + return Promise.reject(new _exceptions.IllegalState()); + } + }); + } + + /** + * Get a promise of MediaRtpStats object for user audio (from client to Amazon Connect). + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + * @deprecated in favor of getStats() + */ + + }, { + key: 'getUserAudioStats', + value: function getUserAudioStats() { + return this.getStats().then(function (stats) { + if (stats.audio.input.length > 0) { + return stats.audio.input[0]; + } else { + return Promise.reject(new _exceptions.IllegalState()); + } + }); + } + + /** + * Get a promise of MediaRtpStats object for user video (from client to Amazon Connect). + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + * @deprecated in favor of getStats() + */ + + }, { + key: 'getRemoteVideoStats', + value: function getRemoteVideoStats() { + return this.getStats().then(function (stats) { + if (stats.video.output.length > 0) { + return stats.video.output[0]; + } else { + return Promise.reject(new _exceptions.IllegalState()); + } + }); + } + + /** + * Get a promise of MediaRtpStats object for user video (from client to Amazon Connect). + * @return Rejected promise if failed to get MediaRtpStats. The promise is never resolved with null value. + * @deprecated in favor of getStats() + */ + + }, { + key: 'getUserVideoStats', + value: function getUserVideoStats() { + return this.getStats().then(function (stats) { + if (stats.video.input.length > 0) { + return stats.video.input[0]; + } else { + return Promise.reject(new _exceptions.IllegalState()); + } + }); + } + }, { + key: '_onIceCandidate', + value: function _onIceCandidate(evt) { + this._state.onIceCandidate(evt); + } + }, { + key: '_onIceStateChange', + value: function _onIceStateChange(evt) { + this._state.onIceStateChange(evt); + } + + /** + * Attach remote media stream to web element. + */ + + }, { + key: '_ontrack', + value: function _ontrack(evt) { + if (evt.streams.length > 1) { + this._logger.warn('Found more than 1 streams for ' + evt.track.kind + ' track ' + evt.track.id + ' : ' + evt.streams.map(function (stream) { + return stream.id; + }).join(',')); + } + if (evt.track.kind === 'video' && this._remoteVideoElement) { + this._remoteVideoElement.srcObject = evt.streams[0]; + this._remoteVideoStream = evt.streams[0]; + } else if (evt.track.kind === 'audio' && this._remoteAudioElement) { + this._remoteAudioElement.srcObject = evt.streams[0]; + this._remoteAudioStream = evt.streams[0]; + } + this._onRemoteStreamAdded(this, evt.streams[0]); + } + }, { + key: '_detachMedia', + value: function _detachMedia() { + if (this._remoteVideoElement) { + this._remoteVideoElement.srcObject = null; + } + if (this._remoteAudioElement) { + this._remoteAudioElement.srcObject = null; + this._remoteAudioStream = null; + } + } + }, { + key: '_stopSession', + value: function _stopSession() { + try { + if (this._localStream && !this._userProvidedStream) { + (0, _utils.closeStream)(this._localStream); + this._localStream = null; + this._userProvidedStream = false; + } + } finally { + try { + if (this._pc) { + this._pc.close(); + } + } catch (e) { + // eat exception + } finally { + this._pc = null; + } + } + } + }, { + key: '_buildMediaConstraints', + value: function _buildMediaConstraints() { + var self = this; + var mediaConstraints = {}; + + if (self._enableAudio) { + var audioConstraints = {}; + if (typeof self._echoCancellation !== 'undefined') { + audioConstraints.echoCancellation = !!self._echoCancellation; + } + if (Object.keys(audioConstraints).length > 0) { + mediaConstraints.audio = audioConstraints; + } else { + mediaConstraints.audio = true; + } + } else { + mediaConstraints.audio = false; + } + + if (self._enableVideo) { + var videoConstraints = {}; + var widthConstraints = {}; + var heightConstraints = {}; + var frameRateConstraints = {}; + + //build video width constraints + if (typeof self._idealVideoWidth !== 'undefined') { + widthConstraints.ideal = self._idealVideoWidth; + } + if (typeof self._maxVideoWidth !== 'undefined') { + widthConstraints.max = self._maxVideoWidth; + } + if (typeof self._minVideoWidth !== 'undefined') { + widthConstraints.min = self._minVideoWidth; + } + // build video height constraints + if (typeof self._idealVideoHeight !== 'undefined') { + heightConstraints.ideal = self._idealVideoHeight; + } + if (typeof self._maxVideoHeight !== 'undefined') { + heightConstraints.max = self._maxVideoHeight; + } + if (typeof self._minVideoHeight !== 'undefined') { + heightConstraints.min = self._minVideoHeight; + } + if (Object.keys(widthConstraints).length > 0 && Object.keys(heightConstraints).length > 0) { + videoConstraints.width = widthConstraints; + videoConstraints.height = heightConstraints; + } + // build frame rate constraints + if (typeof self._videoFrameRate !== 'undefined') { + frameRateConstraints.ideal = self._videoFrameRate; + } + if (typeof self._minVideoFrameRate !== 'undefined') { + frameRateConstraints.min = self._minVideoFrameRate; + } + if (typeof self._maxVideoFrameRate !== 'undefined') { + frameRateConstraints.max = self._maxVideoFrameRate; + } + if (Object.keys(frameRateConstraints).length > 0) { + videoConstraints.frameRate = frameRateConstraints; + } + + // build facing mode constraints + if (self._facingMode !== 'user' && self._facingMode !== "environment") { + self._facingMode = 'user'; + } + videoConstraints.facingMode = self._facingMode; + + // set video constraints + if (Object.keys(videoConstraints).length > 0) { + mediaConstraints.video = videoConstraints; + } else { + mediaConstraints.video = true; + } + } + + return mediaConstraints; + } + }, { + key: 'sessionReport', + get: function get() { + return this._sessionReport; + } + }, { + key: 'callId', + get: function get() { + return this._callId; + } + /** + * getMediaStream returns the local stream, which may be acquired from local device or from user provided stream. + * Rather than getting a stream by calling getUserMedia (which gets a stream from local device such as camera), + * user could also provide the stream to the RtcSession directly to connect to the other end. + */ + + }, { + key: 'mediaStream', + get: function get() { + return this._localStream; + }, + + /** + * Optional. RtcSession will grab input device if this is not specified. + * Please note: this RtcSession class only support single audio track and/or single video track. + */ + set: function set(input) { + this._localStream = input; + this._userProvidedStream = true; + } + /** + * Needed, expect an audio element that can be used to play remote audio stream. + */ + + }, { + key: 'remoteVideoStream', + get: function get() { + return this._remoteVideoStream; + } + }, { + key: 'onGumSuccess', + set: function set(handler) { + this._onGumSuccess = handler; + } + /** + * Callback when gUM fails. + * First param is RtcSession object. + * Second param is the error. + */ + + }, { + key: 'onGumError', + set: function set(handler) { + this._onGumError = handler; + } + /** + * Callback if failed initializing local resources + * First param is RtcSession object. + */ + + }, { + key: 'onSessionFailed', + set: function set(handler) { + this._onSessionFailed = handler; + } + /** + * Callback after local user media stream is added to the session. + * First param is RtcSession object. + * Second param is media stream + */ + + }, { + key: 'onLocalStreamAdded', + set: function set(handler) { + this._onLocalStreamAdded = handler; + } + /** + * Callback when all local resources are ready. Establishing signaling chanel and ICE collection happens at the same time after this. + * First param is RtcSession object. + */ + + }, { + key: 'onSessionInitialized', + set: function set(handler) { + this._onSessionInitialized = handler; + } + /** + * Callback when signaling channel is established. + * RTC session will move forward only if onSignalingConnected and onIceCollectionComplete are both called. + * + * First param is RtcSession object. + */ + + }, { + key: 'onSignalingConnected', + set: function set(handler) { + this._onSignalingConnected = handler; + } + /** + * Callback when ICE collection completes either because there is no more candidate or collection timed out. + * RTC session will move forward only if onSignalingConnected and onIceCollectionComplete are both called. + * + * First param is RtcSession object. + * Second param is boolean, TRUE - ICE collection timed out. + * Third param is number of candidates collected. + */ + + }, { + key: 'onIceCollectionComplete', + set: function set(handler) { + this._onIceCollectionComplete = handler; + } + /** + * Callback when signaling channel is established and ICE collection completed with at least one candidate. + * First param is RtcSession object. + */ + + }, { + key: 'onSignalingStarted', + set: function set(handler) { + this._onSignalingStarted = handler; + } + /** + * Callback when the call is established (handshaked and media stream should be flowing) + * First param is RtcSession object. + */ + + }, { + key: 'onSessionConnected', + set: function set(handler) { + this._onSessionConnected = handler; + } + /** + * Callback after remote media stream is added to the session. + * This could be called multiple times with the same stream if multiple tracks are included in the same stream. + * + * First param is RtcSession object. + * Second param is media stream track. + */ + + }, { + key: 'onRemoteStreamAdded', + set: function set(handler) { + this._onRemoteStreamAdded = handler; + } + /** + * Callback when the hangup is initiated (implies the call was successfully established). + * First param is RtcSession object. + */ + + }, { + key: 'onSessionCompleted', + set: function set(handler) { + this._onSessionCompleted = handler; + } + /** + * Callback after session is cleaned up, no matter if the call was successfully established or not. + * First param is RtcSession object. + * Second param is SessionReport object. + */ + + }, { + key: 'onSessionDestroyed', + set: function set(handler) { + this._onSessionDestroyed = handler; + } + }, { + key: 'enableAudio', + set: function set(flag) { + this._enableAudio = flag; + } + }, { + key: 'echoCancellation', + set: function set(flag) { + this._echoCancellation = flag; + } + }, { + key: 'enableVideo', + set: function set(flag) { + this._enableVideo = flag; + } + }, { + key: 'maxVideoFrameRate', + set: function set(frameRate) { + this._maxVideoFrameRate = frameRate; + } + }, { + key: 'minVideoFrameRate', + set: function set(frameRate) { + this._minVideoFrameRate = frameRate; + } + }, { + key: 'videoFrameRate', + set: function set(frameRate) { + this._videoFrameRate = frameRate; + } + }, { + key: 'maxVideoWidth', + set: function set(width) { + this._maxVideoWidth = width; + } + }, { + key: 'minVideoWidth', + set: function set(width) { + this._minVideoWidth = width; + } + }, { + key: 'idealVideoWidth', + set: function set(width) { + this._idealVideoWidth = width; + } + }, { + key: 'maxVideoHeight', + set: function set(height) { + this._maxVideoHeight = height; + } + }, { + key: 'minVideoHeight', + set: function set(height) { + this._minVideoHeight = height; + } + }, { + key: 'idealVideoHeight', + set: function set(height) { + this._idealVideoHeight = height; + } + }, { + key: 'facingMode', + set: function set(mode) { + this._facingMode = mode; + } + }, { + key: 'remoteAudioElement', + set: function set(element) { + this._remoteAudioElement = element; + } + }, { + key: 'remoteVideoElement', + set: function set(element) { + this._remoteVideoElement = element; + } + /** + * Override the default signaling connect time out. + */ + + }, { + key: 'signalingConnectTimeout', + set: function set(ms) { + this._signalingConnectTimeout = ms; + } + /** + * Override the default ICE collection time limit. + */ + + }, { + key: 'iceTimeoutMillis', + set: function set(timeoutMillis) { + this._iceTimeoutMillis = timeoutMillis; + } + + /** + * Override the default GUM timeout time limit. + */ + + }, { + key: 'gumTimeoutMillis', + set: function set(timeoutMillis) { + this._gumTimeoutMillis = timeoutMillis; + } + + /** + * connect-rtc-js initiate the handshaking with all browser supported codec by default, Amazon Connect service will choose the codec according to its preference setting. + * Setting this attribute will force connect-rtc-js to only use specified codec. + * WARNING: Setting this to unsupported codec will cause the failure of handshaking. + * Supported audio codecs: opus. + */ + + }, { + key: 'forceAudioCodec', + set: function set(audioCodec) { + this._forceAudioCodec = audioCodec; + } + + /** + * connect-rtc-js initiate the handshaking with all browser supported codec by default, Amazon Connect service will choose the codec according to its preference setting. + * Setting this attribute will force connect-rtc-js to only use specified codec. + * WARNING: Setting this to unsupported codec will cause the failure of handshaking. + * Supported video codecs: VP8, VP9, H264. + */ + + }, { + key: 'forceVideoCodec', + set: function set(videoCodec) { + this._forceVideoCodec = videoCodec; + } + + /** + * connect-rtc-js disables OPUS DTX by default because it harms audio quality. + * @param flag boolean + */ + + }, { + key: 'enableOpusDtx', + set: function set(flag) { + this._enableOpusDtx = flag; + } + }]); + return RtcSession; +}(); + +exports.default = RtcSession; + +},{"./exceptions":130,"./rtc_const":131,"./rtp-stats":133,"./session_report":134,"./signaling":135,"./utils":136,"babel-runtime/helpers/asyncToGenerator":9,"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11,"babel-runtime/helpers/get":12,"babel-runtime/helpers/inherits":13,"babel-runtime/helpers/possibleConstructorReturn":14,"babel-runtime/helpers/typeof":15,"babel-runtime/regenerator":16,"sdp":116,"uuid/v4":119}],133:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require('babel-runtime/helpers/createClass'); + +var _createClass3 = _interopRequireDefault(_createClass2); + +exports.extractMediaStatsFromStats = extractMediaStatsFromStats; + +var _utils = require('./utils'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +function extractMediaStatsFromStats(timestamp, stats, streamType) { + var extractedStats = null; + + for (var key in stats) { + var statsReport = stats[key]; + if (statsReport) { + if (statsReport.type === 'ssrc') { + //chrome, opera case. chrome reports stats for all streams, not just the stream passed in. + if ((0, _utils.is_defined)(statsReport.packetsSent) && statsReport.mediaType == 'audio' && streamType === 'audio_input') { + extractedStats = { + timestamp: timestamp, + packetsCount: statsReport.packetsSent, + bytesSent: statsReport.bytesSent, + audioLevel: (0, _utils.when_defined)(statsReport.audioInputLevel), + packetsLost: (0, _utils.is_defined)(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0, + procMilliseconds: (0, _utils.is_defined)(statsReport.googCurrentDelayMs), + rttMilliseconds: (0, _utils.when_defined)(statsReport.googRtt) + }; + } else if ((0, _utils.is_defined)(statsReport.packetsReceived) && statsReport.mediaType == 'audio' && streamType === 'audio_output') { + extractedStats = { + timestamp: timestamp, + packetsCount: statsReport.packetsReceived, + bytesReceived: statsReport.bytesReceived, + audioLevel: (0, _utils.when_defined)(statsReport.audioOutputLevel), + packetsLost: (0, _utils.is_defined)(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0, + procMilliseconds: (0, _utils.is_defined)(statsReport.googCurrentDelayMs), + jbMilliseconds: (0, _utils.when_defined)(statsReport.googJitterBufferMs) + }; + } else if ((0, _utils.is_defined)(statsReport.packetsSent) && statsReport.mediaType == 'video' && streamType === 'video_input') { + extractedStats = { + timestamp: timestamp, + packetsCount: statsReport.packetsSent, + bytesSent: statsReport.bytesSent, + packetsLost: (0, _utils.is_defined)(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0, + rttMilliseconds: (0, _utils.when_defined)(statsReport.googRtt), + procMilliseconds: (0, _utils.is_defined)(statsReport.googCurrentDelayMs), + frameRateSent: (0, _utils.when_defined)(statsReport.googFrameRateSent) + }; + } else if (typeof statsReport.packetsReceived !== 'undefined' && statsReport.mediaType == 'video' && streamType === 'video_output') { + extractedStats = { + timestamp: timestamp, + packetsCount: statsReport.packetsSent, + bytesReceived: statsReport.bytesReceived, + packetsLost: (0, _utils.is_defined)(statsReport.packetsLost) ? Math.max(0, statsReport.packetsLost) : 0, + frameRateReceived: (0, _utils.when_defined)(statsReport.googFrameRateReceived), + procMilliseconds: (0, _utils.is_defined)(statsReport.googCurrentDelayMs), + jbMilliseconds: (0, _utils.when_defined)(statsReport.googJitterBufferMs) + }; + } + } else if (statsReport.type === 'inboundrtp') { + // Firefox case. Firefox reports packetsLost parameter only in inboundrtp type, and doesn't report in outboundrtp type. + // So we only pull from inboundrtp. Firefox reports only stats for the stream passed in. + if ((0, _utils.is_defined)(statsReport.packetsLost) && (0, _utils.is_defined)(statsReport.packetsReceived)) { + extractedStats = { + packetsLost: statsReport.packetsLost, + packetsCount: statsReport.packetsReceived, + audioLevel: (0, _utils.when_defined)(statsReport.audioInputLevel), + rttMilliseconds: streamType === 'audio_ouptut' || streamType === 'video_output' ? (0, _utils.when_defined)(statsReport.roundTripTime) : null, + jbMilliseconds: streamType === 'audio_output' || streamType === 'video_output' ? (0, _utils.when_defined)(statsReport.jitter, 0) * 1000 : null + }; + } + } + } + } + + return extractedStats ? new MediaRtpStats(extractedStats, statsReport.type, streamType) : null; +} + +/** +* Basic RTP statistics object, represents statistics of an audio or video stream. +*/ +/** +* Extract rtp stats of specified stream from RTCStatsReport +* Chrome reports all stream stats in statsReports whereas firefox reports only single stream stats in report +* StreamType is passed only to pull right stream stats audio_input or audio_output. +*/ + +var MediaRtpStats = function () { + function MediaRtpStats(paramsIn, statsReportType, streamType) { + (0, _classCallCheck3.default)(this, MediaRtpStats); + + var params = paramsIn || {}; + + this._timestamp = params.timestamp || new Date().getTime(); + this._packetsLost = (0, _utils.when_defined)(params.packetsLost); + this._packetsCount = (0, _utils.when_defined)(params.packetsCount); + this._audioLevel = (0, _utils.when_defined)(params.audioLevel); + this._rttMilliseconds = (0, _utils.when_defined)(params.rttMilliseconds); + this._jbMilliseconds = (0, _utils.when_defined)(params.jbMilliseconds); + this._bytesSent = (0, _utils.when_defined)(params.bytesSent); + this._bytesReceived = (0, _utils.when_defined)(params.bytesReceived); + this._framesEncoded = (0, _utils.when_defined)(params.framesEncoded); + this._framesDecoded = (0, _utils.when_defined)(params.framesDecoded); + this._frameRateSent = (0, _utils.when_defined)(params.frameRateSent); + this._frameRateReceived = (0, _utils.when_defined)(params.frameRateReceived); + this._statsReportType = statsReportType || params._statsReportType || "unknown"; + this._streamType = streamType || params.streamType || "unknown"; + } + + /** {number} number of packets sent to the channel */ + + + (0, _createClass3.default)(MediaRtpStats, [{ + key: 'packetsCount', + get: function get() { + return this._packetsCount; + } + /** {number} number of packets lost after travelling through the channel */ + + }, { + key: 'packetsLost', + get: function get() { + return this._packetsLost; + } + /** {number} number of packets lost after travelling through the channel */ + + }, { + key: 'packetLossPercentage', + get: function get() { + return this._packetsCount > 0 ? this._packetsLost / this._packetsCount : 0; + } + /** Audio volume level + * Currently firefox doesn't provide audio level in rtp stats. + */ + + }, { + key: 'audioLevel', + get: function get() { + return this._audioLevel; + } + /** Timestamp when stats are collected. */ + + }, { + key: 'timestamp', + get: function get() { + return this._timestamp; + } + /** {number} Round trip time calculated with RTCP reports */ + + }, { + key: 'rttMilliseconds', + get: function get() { + return this._rttMilliseconds; + } + /** {number} Browser/client side jitter buffer length */ + + }, { + key: 'jbMilliseconds', + get: function get() { + return this._jbMilliseconds; + } + /** {number} number of bytes sent to the channel*/ + + }, { + key: 'bytesSent', + get: function get() { + return this._bytesSent; + } + /** {number} number of bytes received from the channel*/ + + }, { + key: 'bytesReceived', + get: function get() { + return this._bytesReceived; + } + /** {number} number of video frames encoded*/ + + }, { + key: 'framesEncoded', + get: function get() { + return this._framesEncoded; + } + /** {number} number of video frames decoded*/ + + }, { + key: 'framesDecoded', + get: function get() { + return this._framesDecoded; + } + /** {number} frames per second sent to the channel*/ + + }, { + key: 'frameRateSent', + get: function get() { + return this._frameRateSent; + } + /** {number} frames per second received from the channel*/ + + }, { + key: 'frameRateReceived', + get: function get() { + return this._frameRateReceived; + } + /** {string} the type of the stats report */ + + }, { + key: 'statsReportType', + get: function get() { + return this._statsReportType; + } + /** {string} the type of the stream */ + + }, { + key: 'streamType', + get: function get() { + return this._streamType; + } + }]); + return MediaRtpStats; +}(); + +},{"./utils":136,"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11}],134:[function(require,module,exports){ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.SessionReport = undefined; + +var _classCallCheck2 = require("babel-runtime/helpers/classCallCheck"); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require("babel-runtime/helpers/createClass"); + +var _createClass3 = _interopRequireDefault(_createClass2); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ + +var SessionReport = exports.SessionReport = function () { + /** + * @class Prototype for tracking various RTC session report + * @constructs + */ + function SessionReport() { + (0, _classCallCheck3.default)(this, SessionReport); + + this._sessionStartTime = null; + this._sessionEndTime = null; + this._gumTimeMillis = null; + this._initializationTimeMillis = null; + this._iceCollectionTimeMillis = null; + this._signallingConnectTimeMillis = null; + this._handshakingTimeMillis = null; + this._preTalkingTimeMillis = null; + this._talkingTimeMillis = null; + this._iceConnectionsLost = 0; + this._cleanupTimeMillis = null; + this._iceCollectionFailure = null; + this._signallingConnectionFailure = null; + this._handshakingFailure = null; + this._gumOtherFailure = null; + this._gumTimeoutFailure = null; + this._createOfferFailure = null; + this._setLocalDescriptionFailure = null; + this._userBusyFailure = null; + this._invalidRemoteSDPFailure = null; + this._noRemoteIceCandidateFailure = null; + this._setRemoteDescriptionFailure = null; + this._streamStats = []; + } + /** + *Timestamp when RTCSession started. + */ + + + (0, _createClass3.default)(SessionReport, [{ + key: "sessionStartTime", + get: function get() { + return this._sessionStartTime; + } + /** + * Timestamp when RTCSession ended. + */ + , + set: function set(value) { + this._sessionStartTime = value; + } + }, { + key: "sessionEndTime", + get: function get() { + return this._sessionEndTime; + } + /** + * Time taken for grabbing user microphone at the time of connecting RTCSession. + */ + , + set: function set(value) { + this._sessionEndTime = value; + } + }, { + key: "gumTimeMillis", + get: function get() { + return this._gumTimeMillis; + } + /** + * Time taken for session initialization in millis. Includes time spent in GrabLocalMedia, SetLocalSDP states. + */ + , + set: function set(value) { + this._gumTimeMillis = value; + } + }, { + key: "initializationTimeMillis", + get: function get() { + return this._initializationTimeMillis; + } + /** + * Time spent on ICECollection in millis. + */ + , + set: function set(value) { + this._initializationTimeMillis = value; + } + }, { + key: "iceCollectionTimeMillis", + get: function get() { + return this._iceCollectionTimeMillis; + } + /** + * Time taken for connecting the signalling in millis. + */ + , + set: function set(value) { + this._iceCollectionTimeMillis = value; + } + }, { + key: "signallingConnectTimeMillis", + get: function get() { + return this._signallingConnectTimeMillis; + } + /** + * Times spent from RTCSession connection until entering Talking state in millis. + */ + , + set: function set(value) { + this._signallingConnectTimeMillis = value; + } + }, { + key: "preTalkingTimeMillis", + get: function get() { + return this._preTalkingTimeMillis; + } + /** + * Times spent in completing handshaking process of the RTCSession in millis. + */ + , + set: function set(value) { + this._preTalkingTimeMillis = value; + } + }, { + key: "handshakingTimeMillis", + get: function get() { + return this._handshakingTimeMillis; + } + /** + * Times spent in Talking state in millis. + */ + , + set: function set(value) { + this._handshakingTimeMillis = value; + } + }, { + key: "talkingTimeMillis", + get: function get() { + return this._talkingTimeMillis; + } + /** + * How many times the RTCSession has lost ICE connection in talking state. + */ + , + set: function set(value) { + this._talkingTimeMillis = value; + } + }, { + key: "iceConnectionsLost", + get: function get() { + return this._iceConnectionsLost; + } + /** + * Times spent in Cleanup state in millis + */ + , + set: function set(value) { + this._iceConnectionsLost = value; + } + }, { + key: "cleanupTimeMillis", + get: function get() { + return this._cleanupTimeMillis; + } + /** + * Tells if the RTCSession fails in ICECollection. + */ + , + set: function set(value) { + this._cleanupTimeMillis = value; + } + }, { + key: "iceCollectionFailure", + get: function get() { + return this._iceCollectionFailure; + } + /** + * Tells if the RTCSession failed in signalling connect stage. + */ + , + set: function set(value) { + this._iceCollectionFailure = value; + } + }, { + key: "signallingConnectionFailure", + get: function get() { + return this._signallingConnectionFailure; + } + /** + * Handshaking failure of the RTCSession + */ + , + set: function set(value) { + this._signallingConnectionFailure = value; + } + }, { + key: "handshakingFailure", + get: function get() { + return this._handshakingFailure; + } + /** + * Gum failed due to timeout at the time of new RTCSession connection + */ + , + set: function set(value) { + this._handshakingFailure = value; + } + }, { + key: "gumTimeoutFailure", + get: function get() { + return this._gumTimeoutFailure; + } + /** + * Gum failed due to other reasons (other than Timeout) + */ + , + set: function set(value) { + this._gumTimeoutFailure = value; + } + }, { + key: "gumOtherFailure", + get: function get() { + return this._gumOtherFailure; + } + /** + * RTC Session failed in create Offer state. + */ + , + set: function set(value) { + this._gumOtherFailure = value; + } + }, { + key: "createOfferFailure", + get: function get() { + return this._createOfferFailure; + } + /** + * Tells if setLocalDescription failed for the RTC Session. + */ + , + set: function set(value) { + this._createOfferFailure = value; + } + }, { + key: "setLocalDescriptionFailure", + get: function get() { + return this._setLocalDescriptionFailure; + } + /** + * Tells if handshaking failed due to user busy case, + * happens when multiple softphone calls are initiated at same time. + */ + , + set: function set(value) { + this._setLocalDescriptionFailure = value; + } + }, { + key: "userBusyFailure", + get: function get() { + return this._userBusyFailure; + } + /** + * Tells it remote SDP is invalid. + */ + , + set: function set(value) { + this._userBusyFailure = value; + } + }, { + key: "invalidRemoteSDPFailure", + get: function get() { + return this._invalidRemoteSDPFailure; + } + /** + * Tells if the setRemoteDescription failed for the RTC Session. + */ + , + set: function set(value) { + this._invalidRemoteSDPFailure = value; + } + }, { + key: "setRemoteDescriptionFailure", + get: function get() { + return this._setRemoteDescriptionFailure; + } + /** + * A failure case when there is no RemoteIceCandidate. + */ + , + set: function set(value) { + this._setRemoteDescriptionFailure = value; + } + }, { + key: "noRemoteIceCandidateFailure", + get: function get() { + return this._noRemoteIceCandidateFailure; + } + /** + * Statistics for each stream(audio-in, audio-out, video-in, video-out) of the RTCSession. + */ + , + set: function set(value) { + this._noRemoteIceCandidateFailure = value; + } + }, { + key: "streamStats", + get: function get() { + return this._streamStats; + }, + set: function set(value) { + this._streamStats = value; + } + }]); + return SessionReport; +}(); + +},{"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11}],135:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.FailedState = exports.DisconnectedState = exports.PendingLocalHangupState = exports.PendingRemoteHangupState = exports.PendingReconnectState = exports.TalkingState = exports.PendingAcceptAckState = exports.PendingAcceptState = exports.PendingAnswerState = exports.PendingInviteState = exports.PendingConnectState = exports.FailOnTimeoutState = exports.SignalingState = undefined; + +var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn'); + +var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2); + +var _inherits2 = require('babel-runtime/helpers/inherits'); + +var _inherits3 = _interopRequireDefault(_inherits2); + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require('babel-runtime/helpers/createClass'); + +var _createClass3 = _interopRequireDefault(_createClass2); + +var _utils = require('./utils'); + +var _rtc_const = require('./rtc_const'); + +var _exceptions = require('./exceptions'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +var reqIdSeq = 1; /** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ + +var CONNECT_MAX_RETRIES = 3; + +/** + * Abstract signaling state class. + */ + +var SignalingState = exports.SignalingState = function () { + /** + * @param {AmznRtcSignaling} signaling Signaling object. + */ + function SignalingState(signaling) { + (0, _classCallCheck3.default)(this, SignalingState); + + this._signaling = signaling; + this._createTime = new Date().getTime(); + } + + (0, _createClass3.default)(SignalingState, [{ + key: 'setStateTimeout', + value: function setStateTimeout(timeoutMs) { + setTimeout((0, _utils.hitch)(this, this._onTimeoutChecked), timeoutMs); + } + }, { + key: 'onEnter', + value: function onEnter() {} + }, { + key: '_onTimeoutChecked', + value: function _onTimeoutChecked() { + if (this.isCurrentState) { + this.onTimeout(); + } + } + }, { + key: 'onTimeout', + value: function onTimeout() { + throw new _exceptions.UnsupportedOperation(); + } + }, { + key: 'transit', + value: function transit(newState) { + this._signaling.transit(newState); + } + }, { + key: 'onExit', + value: function onExit() {} + }, { + key: 'onOpen', + value: function onOpen() { + throw new _exceptions.UnsupportedOperation('onOpen not supported by ' + this.name); + } + }, { + key: 'onError', + value: function onError() { + this.channelDown(); + } + }, { + key: 'onClose', + value: function onClose() { + this.channelDown(); + } + }, { + key: 'channelDown', + value: function channelDown() { + throw new _exceptions.UnsupportedOperation('channelDown not supported by ' + this.name); + } + }, { + key: 'onRpcMsg', + value: function onRpcMsg(rpcMsg) { + // eslint-disable-line no-unused-vars + throw new _exceptions.UnsupportedOperation('onRpcMsg not supported by ' + this.name); + } + }, { + key: 'invite', + value: function invite(sdp, iceCandidates) { + // eslint-disable-line no-unused-vars + throw new _exceptions.UnsupportedOperation('invite not supported by ' + this.name); + } + }, { + key: 'accept', + value: function accept() { + throw new _exceptions.UnsupportedOperation('accept not supported by ' + this.name); + } + }, { + key: 'hangup', + value: function hangup() { + throw new _exceptions.UnsupportedOperation('hangup not supported by ' + this.name); + } + }, { + key: 'isCurrentState', + get: function get() { + return this === this._signaling.state; + } + }, { + key: 'name', + get: function get() { + return "SignalingState"; + } + }, { + key: 'logger', + get: function get() { + return this._signaling._logger; + } + }]); + return SignalingState; +}(); + +var FailOnTimeoutState = exports.FailOnTimeoutState = function (_SignalingState) { + (0, _inherits3.default)(FailOnTimeoutState, _SignalingState); + + function FailOnTimeoutState(signaling, timeoutMs) { + (0, _classCallCheck3.default)(this, FailOnTimeoutState); + + var _this = (0, _possibleConstructorReturn3.default)(this, (FailOnTimeoutState.__proto__ || Object.getPrototypeOf(FailOnTimeoutState)).call(this, signaling)); + + _this._timeoutMs = timeoutMs; + return _this; + } + + (0, _createClass3.default)(FailOnTimeoutState, [{ + key: 'onEnter', + value: function onEnter() { + this.setStateTimeout(this._timeoutMs); + } + }, { + key: 'onTimeout', + value: function onTimeout() { + this.transit(new FailedState(this._signaling, new _exceptions.Timeout())); + } + }, { + key: 'name', + get: function get() { + return "FailOnTimeoutState"; + } + }]); + return FailOnTimeoutState; +}(SignalingState); + +var PendingConnectState = exports.PendingConnectState = function (_FailOnTimeoutState) { + (0, _inherits3.default)(PendingConnectState, _FailOnTimeoutState); + + function PendingConnectState(signaling, timeoutMs, initialStartTimeIn, retriesIn) { + (0, _classCallCheck3.default)(this, PendingConnectState); + + var _this2 = (0, _possibleConstructorReturn3.default)(this, (PendingConnectState.__proto__ || Object.getPrototypeOf(PendingConnectState)).call(this, signaling, timeoutMs)); + + _this2._initialStartTime = initialStartTimeIn || new Date().getTime(); + _this2._retries = retriesIn || 0; + return _this2; + } + + (0, _createClass3.default)(PendingConnectState, [{ + key: 'onOpen', + value: function onOpen() { + this.transit(new PendingInviteState(this._signaling)); + } + }, { + key: 'channelDown', + value: function channelDown() { + var now = new Date().getTime(); + var untilTimeoutMs = this._initialStartTime + this._timeoutMs - now; + if (untilTimeoutMs > 0 && ++this._retries < CONNECT_MAX_RETRIES) { + this._signaling._connect(); + this.transit(new PendingConnectState(this._signaling, untilTimeoutMs, this._initialStartTime, this._retries)); + } else { + this.transit(new FailedState(this._signaling, new Error('channelDown'))); + } + } + }, { + key: 'name', + get: function get() { + return "PendingConnectState"; + } + }]); + return PendingConnectState; +}(FailOnTimeoutState); + +var PendingInviteState = exports.PendingInviteState = function (_SignalingState2) { + (0, _inherits3.default)(PendingInviteState, _SignalingState2); + + function PendingInviteState() { + (0, _classCallCheck3.default)(this, PendingInviteState); + return (0, _possibleConstructorReturn3.default)(this, (PendingInviteState.__proto__ || Object.getPrototypeOf(PendingInviteState)).apply(this, arguments)); + } + + (0, _createClass3.default)(PendingInviteState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyConnected(resolve) { + self._signaling._connectedHandler(); + resolve(); + }); + } + }, { + key: 'invite', + value: function invite(sdp, iceCandidates) { + var self = this; + var inviteId = reqIdSeq++; + + var inviteParams = { + sdp: sdp, + candidates: iceCandidates + }; + self.logger.log('Sending SDP', sdp); + self._signaling._wss.send(JSON.stringify({ + jsonrpc: '2.0', + method: 'invite', + params: inviteParams, + id: inviteId + })); + self.transit(new PendingAnswerState(self._signaling, inviteId)); + } + }, { + key: 'channelDown', + value: function channelDown() { + this.transit(new FailedState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "PendingInviteState"; + } + }]); + return PendingInviteState; +}(SignalingState); + +var PendingAnswerState = exports.PendingAnswerState = function (_FailOnTimeoutState2) { + (0, _inherits3.default)(PendingAnswerState, _FailOnTimeoutState2); + + function PendingAnswerState(signaling, inviteId) { + (0, _classCallCheck3.default)(this, PendingAnswerState); + + var _this4 = (0, _possibleConstructorReturn3.default)(this, (PendingAnswerState.__proto__ || Object.getPrototypeOf(PendingAnswerState)).call(this, signaling, _rtc_const.MAX_INVITE_DELAY_MS)); + + _this4._inviteId = inviteId; + return _this4; + } + + (0, _createClass3.default)(PendingAnswerState, [{ + key: 'onRpcMsg', + value: function onRpcMsg(msg) { + var self = this; + if (msg.id === this._inviteId) { + if (msg.error || !msg.result) { + this.transit(new FailedState(this._signaling, self.translateInviteError(msg))); + } else { + new Promise(function notifyAnswered(resolve) { + self.logger.log('Received SDP', msg.result.sdp); + self._signaling._answeredHandler(msg.result.sdp, msg.result.candidates); + resolve(); + }); + this.transit(new PendingAcceptState(this._signaling, this._signaling._autoAnswer)); + } + } + } + }, { + key: 'translateInviteError', + value: function translateInviteError(msg) { + if (msg.error && msg.error.code == 486) { + return new _exceptions.BusyException(msg.error.message); + } else if (msg.error && msg.error.code == 404) { + return new _exceptions.CallNotFoundException(msg.error.message); + } else { + return new _exceptions.UnknownSignalingError(); + } + } + }, { + key: 'name', + get: function get() { + return "PendingAnswerState"; + } + }]); + return PendingAnswerState; +}(FailOnTimeoutState); + +var PendingAcceptState = exports.PendingAcceptState = function (_SignalingState3) { + (0, _inherits3.default)(PendingAcceptState, _SignalingState3); + + function PendingAcceptState(signaling, autoAnswer) { + (0, _classCallCheck3.default)(this, PendingAcceptState); + + var _this5 = (0, _possibleConstructorReturn3.default)(this, (PendingAcceptState.__proto__ || Object.getPrototypeOf(PendingAcceptState)).call(this, signaling)); + + _this5._autoAnswer = autoAnswer; + return _this5; + } + + (0, _createClass3.default)(PendingAcceptState, [{ + key: 'onEnter', + value: function onEnter() { + if (this._autoAnswer) { + this.accept(); + } + } + }, { + key: 'accept', + value: function accept() { + var acceptId = reqIdSeq++; + this._signaling._wss.send(JSON.stringify({ + jsonrpc: '2.0', + method: 'accept', + params: {}, + id: acceptId + })); + this.transit(new PendingAcceptAckState(this._signaling, acceptId)); + } + }, { + key: 'channelDown', + value: function channelDown() { + this.transit(new FailedState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "PendingAcceptState"; + } + }]); + return PendingAcceptState; +}(SignalingState); + +var PendingAcceptAckState = exports.PendingAcceptAckState = function (_FailOnTimeoutState3) { + (0, _inherits3.default)(PendingAcceptAckState, _FailOnTimeoutState3); + + function PendingAcceptAckState(signaling, acceptId) { + (0, _classCallCheck3.default)(this, PendingAcceptAckState); + + var _this6 = (0, _possibleConstructorReturn3.default)(this, (PendingAcceptAckState.__proto__ || Object.getPrototypeOf(PendingAcceptAckState)).call(this, signaling, _rtc_const.MAX_ACCEPT_BYE_DELAY_MS)); + + _this6._acceptId = acceptId; + return _this6; + } + + (0, _createClass3.default)(PendingAcceptAckState, [{ + key: 'onRpcMsg', + value: function onRpcMsg(msg) { + if (msg.id === this._acceptId) { + if (msg.error) { + this.transit(new FailedState(this._signaling)); + } else { + this._signaling._clientToken = msg.result.clientToken; + this.transit(new TalkingState(this._signaling)); + } + } + } + }, { + key: 'name', + get: function get() { + return "PendingAcceptAckState"; + } + }]); + return PendingAcceptAckState; +}(FailOnTimeoutState); + +var TalkingState = exports.TalkingState = function (_SignalingState4) { + (0, _inherits3.default)(TalkingState, _SignalingState4); + + function TalkingState() { + (0, _classCallCheck3.default)(this, TalkingState); + return (0, _possibleConstructorReturn3.default)(this, (TalkingState.__proto__ || Object.getPrototypeOf(TalkingState)).apply(this, arguments)); + } + + (0, _createClass3.default)(TalkingState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyHandshaked(resolve) { + self._signaling._handshakedHandler(); + resolve(); + }); + } + }, { + key: 'hangup', + value: function hangup() { + var byeId = reqIdSeq++; + this._signaling._wss.send(JSON.stringify({ + jsonrpc: '2.0', + method: 'bye', + params: {}, + id: byeId + })); + this.transit(new PendingRemoteHangupState(this._signaling, byeId)); + } + }, { + key: 'onRpcMsg', + value: function onRpcMsg(msg) { + if (msg.method === 'bye') { + this.transit(new PendingLocalHangupState(this._signaling, msg.id)); + } else if (msg.method === 'renewClientToken') { + this._signaling._clientToken = msg.params.clientToken; + } + } + }, { + key: 'channelDown', + value: function channelDown() { + this._signaling._reconnect(); + this._signaling.transit(new PendingReconnectState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "TalkingState"; + } + }]); + return TalkingState; +}(SignalingState); + +var PendingReconnectState = exports.PendingReconnectState = function (_FailOnTimeoutState4) { + (0, _inherits3.default)(PendingReconnectState, _FailOnTimeoutState4); + + function PendingReconnectState(signaling) { + (0, _classCallCheck3.default)(this, PendingReconnectState); + return (0, _possibleConstructorReturn3.default)(this, (PendingReconnectState.__proto__ || Object.getPrototypeOf(PendingReconnectState)).call(this, signaling, _rtc_const.DEFAULT_CONNECT_TIMEOUT_MS)); + } + + (0, _createClass3.default)(PendingReconnectState, [{ + key: 'onOpen', + value: function onOpen() { + this.transit(new TalkingState(this._signaling)); + } + }, { + key: 'channelDown', + value: function channelDown() { + this.transit(new FailedState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "PendingReconnectState"; + } + }]); + return PendingReconnectState; +}(FailOnTimeoutState); + +var PendingRemoteHangupState = exports.PendingRemoteHangupState = function (_FailOnTimeoutState5) { + (0, _inherits3.default)(PendingRemoteHangupState, _FailOnTimeoutState5); + + function PendingRemoteHangupState(signaling, byeId) { + (0, _classCallCheck3.default)(this, PendingRemoteHangupState); + + var _this9 = (0, _possibleConstructorReturn3.default)(this, (PendingRemoteHangupState.__proto__ || Object.getPrototypeOf(PendingRemoteHangupState)).call(this, signaling, _rtc_const.MAX_ACCEPT_BYE_DELAY_MS)); + + _this9._byeId = byeId; + return _this9; + } + + (0, _createClass3.default)(PendingRemoteHangupState, [{ + key: 'onRpcMsg', + value: function onRpcMsg(msg) { + if (msg.id === this._byeId) { + this.transit(new DisconnectedState(this._signaling)); + } + } + }, { + key: 'name', + get: function get() { + return "PendingRemoteHangupState"; + } + }]); + return PendingRemoteHangupState; +}(FailOnTimeoutState); + +var PendingLocalHangupState = exports.PendingLocalHangupState = function (_SignalingState5) { + (0, _inherits3.default)(PendingLocalHangupState, _SignalingState5); + + function PendingLocalHangupState(signaling, byeId) { + (0, _classCallCheck3.default)(this, PendingLocalHangupState); + + var _this10 = (0, _possibleConstructorReturn3.default)(this, (PendingLocalHangupState.__proto__ || Object.getPrototypeOf(PendingLocalHangupState)).call(this, signaling)); + + _this10._byeId = byeId; + return _this10; + } + + (0, _createClass3.default)(PendingLocalHangupState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyRemoteHungup(resolve) { + self._signaling._remoteHungupHandler(); + resolve(); + }); + } + }, { + key: 'hangup', + value: function hangup() { + var self = this; + self._signaling._wss.send(JSON.stringify({ + jsonrpc: '2.0', + result: {}, + id: self._byeId + })); + self.transit(new DisconnectedState(self._signaling)); + } + }, { + key: 'channelDown', + value: function channelDown() { + this.transit(new DisconnectedState(this._signaling)); + } + }, { + key: 'name', + get: function get() { + return "PendingLocalHangupState"; + } + }]); + return PendingLocalHangupState; +}(SignalingState); + +var DisconnectedState = exports.DisconnectedState = function (_SignalingState6) { + (0, _inherits3.default)(DisconnectedState, _SignalingState6); + + function DisconnectedState() { + (0, _classCallCheck3.default)(this, DisconnectedState); + return (0, _possibleConstructorReturn3.default)(this, (DisconnectedState.__proto__ || Object.getPrototypeOf(DisconnectedState)).apply(this, arguments)); + } + + (0, _createClass3.default)(DisconnectedState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyDisconnected(resolve) { + self._signaling._disconnectedHandler(); + resolve(); + }); + this._signaling._wss.close(); + } + }, { + key: 'channelDown', + value: function channelDown() { + //Do nothing + } + }, { + key: 'name', + get: function get() { + return "DisconnectedState"; + } + }]); + return DisconnectedState; +}(SignalingState); + +var FailedState = exports.FailedState = function (_SignalingState7) { + (0, _inherits3.default)(FailedState, _SignalingState7); + + function FailedState(signaling, exception) { + (0, _classCallCheck3.default)(this, FailedState); + + var _this12 = (0, _possibleConstructorReturn3.default)(this, (FailedState.__proto__ || Object.getPrototypeOf(FailedState)).call(this, signaling)); + + _this12._exception = exception; + return _this12; + } + + (0, _createClass3.default)(FailedState, [{ + key: 'onEnter', + value: function onEnter() { + var self = this; + new Promise(function notifyFailed(resolve) { + self._signaling._failedHandler(self._exception); + resolve(); + }); + this._signaling._wss.close(); + } + }, { + key: 'channelDown', + value: function channelDown() { + //Do nothing + } + }, { + key: 'name', + get: function get() { + return "FailedState"; + } + }, { + key: 'exception', + get: function get() { + return this._exception; + } + }]); + return FailedState; +}(SignalingState); + +var AmznRtcSignaling = function () { + function AmznRtcSignaling(callId, signalingUri, contactToken, logger, connectTimeoutMs) { + (0, _classCallCheck3.default)(this, AmznRtcSignaling); + + this._callId = callId; + this._connectTimeoutMs = connectTimeoutMs || _rtc_const.DEFAULT_CONNECT_TIMEOUT_MS; + this._autoAnswer = true; + this._signalingUri = signalingUri; + this._contactToken = contactToken; + this._logger = (0, _utils.wrapLogger)(logger, callId, 'SIGNALING'); + + //empty event handlers + this._connectedHandler = this._answeredHandler = this._handshakedHandler = this._reconnectedHandler = this._remoteHungupHandler = this._disconnectedHandler = this._failedHandler = function noOp() {}; + } + + (0, _createClass3.default)(AmznRtcSignaling, [{ + key: 'connect', + value: function connect() { + this._connect(); + this.transit(new PendingConnectState(this, this._connectTimeoutMs)); + } + }, { + key: '_connect', + value: function _connect() { + this._wss = this._connectWebSocket(this._buildInviteUri()); + } + }, { + key: 'transit', + value: function transit(nextState) { + try { + this._logger.info((this._state ? this._state.name : 'null') + ' => ' + nextState.name); + if (this.state && this.state.onExit) { + this.state.onExit(); + } + } finally { + this._state = nextState; + if (this._state.onEnter) { + this._state.onEnter(); + } + } + } + }, { + key: '_connectWebSocket', + value: function _connectWebSocket(uri) { + var wsConnection = new WebSocket(uri); + wsConnection.onopen = (0, _utils.hitch)(this, this._onOpen); + wsConnection.onmessage = (0, _utils.hitch)(this, this._onMessage); + wsConnection.onerror = (0, _utils.hitch)(this, this._onError); + wsConnection.onclose = (0, _utils.hitch)(this, this._onClose); + return wsConnection; + } + }, { + key: '_buildInviteUri', + value: function _buildInviteUri() { + if (this._contactToken) { + return this._buildUriBase() + '&contactCtx=' + encodeURIComponent(this._contactToken); + } else { + return this._buildUriBase(); + } + } + }, { + key: '_buildReconnectUri', + value: function _buildReconnectUri() { + return this._buildUriBase() + '&clientToken=' + encodeURIComponent(this._clientToken); + } + }, { + key: '_buildUriBase', + value: function _buildUriBase() { + var separator = '?'; + if (this._signalingUri.indexOf(separator) > -1) { + separator = '&'; + } + return this._signalingUri + separator + 'callId=' + encodeURIComponent(this._callId); + } + }, { + key: '_onMessage', + value: function _onMessage(evt) { + this.state.onRpcMsg(JSON.parse(evt.data)); + } + }, { + key: '_onOpen', + value: function _onOpen(evt) { + this.state.onOpen(evt); + } + }, { + key: '_onError', + value: function _onError(evt) { + this.state.onError(evt); + } + }, { + key: '_onClose', + value: function _onClose(evt) { + this._logger.log('WebSocket onclose code=' + evt.code + ', reason=' + evt.reason); + this.state.onClose(evt); + } + }, { + key: '_reconnect', + value: function _reconnect() { + this._wss = this._connectWebSocket(this._buildReconnectUri()); + } + }, { + key: 'invite', + value: function invite(sdp, iceCandidates) { + this.state.invite(sdp, iceCandidates); + } + }, { + key: 'accept', + value: function accept() { + this.state.accept(); + } + }, { + key: 'hangup', + value: function hangup() { + this.state.hangup(); + } + }, { + key: 'callId', + get: function get() { + return this._callId; + } + }, { + key: 'onConnected', + set: function set(connectedHandler) { + this._connectedHandler = connectedHandler; + } + }, { + key: 'onAnswered', + set: function set(answeredHandler) { + this._answeredHandler = answeredHandler; + } + }, { + key: 'onHandshaked', + set: function set(handshakedHandler) { + this._handshakedHandler = handshakedHandler; + } + }, { + key: 'onReconnected', + set: function set(reconnectedHandler) { + this._reconnectedHandler = reconnectedHandler; + } + }, { + key: 'onRemoteHungup', + set: function set(remoteHungupHandler) { + this._remoteHungupHandler = remoteHungupHandler; + } + }, { + key: 'onDisconnected', + set: function set(disconnectedHandler) { + this._disconnectedHandler = disconnectedHandler; + } + }, { + key: 'onFailed', + set: function set(failedHandler) { + this._failedHandler = failedHandler; + } + }, { + key: 'state', + get: function get() { + return this._state; + } + }]); + return AmznRtcSignaling; +}(); + +exports.default = AmznRtcSignaling; + +},{"./exceptions":130,"./rtc_const":131,"./utils":136,"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11,"babel-runtime/helpers/inherits":13,"babel-runtime/helpers/possibleConstructorReturn":14}],136:[function(require,module,exports){ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.SdpOptions = undefined; + +var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +var _createClass2 = require('babel-runtime/helpers/createClass'); + +var _createClass3 = _interopRequireDefault(_createClass2); + +exports.hitch = hitch; +exports.wrapLogger = wrapLogger; +exports.closeStream = closeStream; +exports.transformSdp = transformSdp; +exports.is_defined = is_defined; +exports.when_defined = when_defined; + +var _exceptions = require('./exceptions'); + +var _sdp = require('sdp'); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +/** + * All logging methods used by connect-rtc. + */ +/** + * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * Licensed under the Amazon Software License (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at + * + * http://aws.amazon.com/asl/ + * + * or in the "LICENSE" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License. + */ + +var logMethods = ['log', 'info', 'warn', 'error']; + +/** +* Binds the given instance object as the context for +* the method provided. +* +* @param scope The instance object to be set as the scope +* of the function. +* @param method The method to be encapsulated. +* +* All other arguments, if any, are bound to the method +* invocation inside the closure. +* +* @return A closure encapsulating the invocation of the +* method provided in context of the given instance. +*/ +function hitch() { + var args = Array.prototype.slice.call(arguments); + var scope = args.shift(); + var method = args.shift(); + + if (!scope) { + throw new _exceptions.IllegalParameters('utils.hitch(): scope is required!'); + } + + if (!method) { + throw new _exceptions.IllegalParameters('utils.hitch(): method is required!'); + } + + if (typeof method !== 'function') { + throw new _exceptions.IllegalParameters('utils.hitch(): method is not a function!'); + } + + return function _hitchedFunction() { + var closureArgs = Array.prototype.slice.call(arguments); + return method.apply(scope, args.concat(closureArgs)); + }; +} + +function wrapLogger(logger, callId, logCategory) { + var _logger = {}; + logMethods.forEach(function (logMethod) { + if (!logger[logMethod]) { + throw new Error('Logging method ' + logMethod + ' required'); + } + _logger[logMethod] = hitch(logger, logger[logMethod], callId, logCategory); + }); + return _logger; +} + +function closeStream(stream) { + if (stream) { + var tracks = stream.getTracks(); + for (var i = 0; i < tracks.length; i++) { + var track = tracks[i]; + try { + track.stop(); + } catch (e) { + // eat exception + } + } + } +} + +/** + * A parameter of transformSdp. + * This defines all the SDP options connect-rtc-js supports. + */ + +var SdpOptions = exports.SdpOptions = function () { + function SdpOptions() { + (0, _classCallCheck3.default)(this, SdpOptions); + + this._forceCodec = {}; + } + + (0, _createClass3.default)(SdpOptions, [{ + key: '_shouldDeleteCodec', + + + /** + * Test if given codec should be removed from SDP. + * @param mediaType audio|video + * @param codecName case insensitive + * @return TRUE - should remove + */ + value: function _shouldDeleteCodec(mediaType, codecName) { + var upperCaseCodecName = codecName.toUpperCase(); + return this._forceCodec[mediaType] && upperCaseCodecName !== this._forceCodec[mediaType].toUpperCase() && upperCaseCodecName !== 'TELEPHONE-EVENT'; + } + }, { + key: 'enableOpusDtx', + get: function get() { + return this._enableOpusDtx; + } + + /** + * By default transformSdp disables dtx for OPUS codec. + * Setting this to true would force it to turn on DTX. + */ + , + set: function set(flag) { + this._enableOpusDtx = flag; + } + + /** + * A map from media type (audio/video) to codec (case insensitive). + * Add entry for force connect-rtc-js to use specified codec for certain media type. + * For example: sdpOptions.forceCodec['audio'] = 'opus'; + */ + + }, { + key: 'forceCodec', + get: function get() { + return this._forceCodec; + } + }]); + return SdpOptions; +}(); + +/** + * Modifies input SDP according to sdpOptions. + * See SdpOptions for available options. + * @param sdp original SDP + * @param sdpOptions defines changes to be applied to SDP + * @returns a map with 'sdp' containing the transformed SDP and 'mLines' containing the number of m lines in SDP + */ + + +function transformSdp(sdp, sdpOptions) { + var sections = (0, _sdp.splitSections)(sdp); + for (var i = 1; i < sections.length; i++) { + var mediaType = (0, _sdp.getKind)(sections[i]); + var rtpParams = (0, _sdp.parseRtpParameters)(sections[i]); + // a map from payload type (string) to codec object + var codecMap = rtpParams.codecs.reduce(function (map, codec) { + map['' + codec.payloadType] = codec; + return map; + }, {}); + sections[i] = (0, _sdp.splitLines)(sections[i]).map(function (line) { + if (line.startsWith('m=')) { + // modify m= line if SdpOptions#forceCodec specifies codec for current media type + if (sdpOptions.forceCodec[mediaType]) { + var targetCodecPts = Object.keys(codecMap).filter(function (pt) { + return !sdpOptions._shouldDeleteCodec(mediaType, codecMap[pt].name); + }); + return (/.*RTP\/S?AVPF? /.exec(line) + targetCodecPts.join(' ') + ); + } else { + return line; + } + } else if (line.startsWith('a=rtpmap:')) { + var rtpMap = (0, _sdp.parseRtpMap)(line); + var currentCodec = codecMap[rtpMap.payloadType]; + + // remove this codec if SdpOptions#forceCodec specifies a different codec for current media type + if (sdpOptions._shouldDeleteCodec(mediaType, currentCodec.name)) { + return null; + } + + // append a=fmtp line immediately if current codec is OPUS (to explicitly specify OPUS parameters) + if (currentCodec.name.toUpperCase() === 'OPUS') { + currentCodec.parameters.usedtx = sdpOptions.enableOpusDtx ? 1 : 0; + // generate fmtp line immediately after rtpmap line, and remove original fmtp line once we see it + return (line + "\r\n" + (0, _sdp.writeFmtp)(currentCodec)).trim(); + } else { + return line; + } + } else if (line.startsWith('a=fmtp:')) { + var pt = line.substring('a=fmtp:'.length, line.indexOf(' ')); + var currentCodec = codecMap[pt]; // eslint-disable-line no-redeclare + + // remove this codec if SdpOptions#forceCodec specifies a different codec for current media type + if (sdpOptions._shouldDeleteCodec(mediaType, currentCodec.name)) { + return null; + } + + if (currentCodec.name.toUpperCase() === 'OPUS') { + // this is a line for OPUS, remove it because FMTP line is already generated when rtpmap line is processed + return null; + } else { + return line; + } + } else if (line.startsWith('a=rtcp-fb:')) { + var pt = line.substring(line.indexOf(':') + 1, line.indexOf(' ')); // eslint-disable-line no-redeclare + var currentCodec = codecMap[pt]; // eslint-disable-line no-redeclare + + // remove this codec if SdpOptions#forceCodec specifies a different codec for current media type + if (sdpOptions._shouldDeleteCodec(mediaType, currentCodec.name)) { + return null; + } else { + return line; + } + } else { + return line; + } + }).filter(function (line) { + return line !== null; + }).join('\r\n'); + } + return { + sdp: sections.map(function (section) { + return section.trim(); + }).join('\r\n') + '\r\n', + mLines: sections.length - 1 // first section is session description, the rest are media descriptions + }; +} + +function is_defined(v) { + return typeof v !== 'undefined'; +} + +function when_defined(v, alternativeIn) { + var alternative = is_defined(alternativeIn) ? alternativeIn : null; + return is_defined(v) ? v : alternative; +} + +},{"./exceptions":130,"babel-runtime/helpers/classCallCheck":10,"babel-runtime/helpers/createClass":11,"sdp":116}]},{},[129]); diff --git a/release/connect-rtc.min.js b/release/connect-rtc.min.js new file mode 100644 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