From 00291117d85144fe62c394afa1ebc634298ec7f4 Mon Sep 17 00:00:00 2001 From: Rene Schallner Date: Sun, 7 May 2023 04:01:05 +0200 Subject: [PATCH] websockets + example --- README.md | 2 + build.zig | 1 + build.zig.zon | 7 +- examples/websockets/frontend/index.html | 209 +++++++++++++++++++ examples/websockets/frontend/index.js | 69 ++++++ examples/websockets/frontend/showdown.min.js | 3 + examples/websockets/websockets.zig | 180 ++++++++++++++++ src/fio.zig | 39 ++++ src/websockets.zig | 207 ++++++++++++++++++ src/zap.zig | 70 ++++++- 10 files changed, 775 insertions(+), 12 deletions(-) create mode 100644 examples/websockets/frontend/index.html create mode 100644 examples/websockets/frontend/index.js create mode 100644 examples/websockets/frontend/showdown.min.js create mode 100644 examples/websockets/websockets.zig create mode 100644 src/websockets.zig diff --git a/README.md b/README.md index 4bf6840..992c9b6 100644 --- a/README.md +++ b/README.md @@ -46,6 +46,8 @@ Here's what works: itself query parameters of all supported types. - **[cookies](examples/cookies/cookies.zig)**: a simple example sending itself a cookie and responding with a session cookie. +- **[websockets](examples/websockets/websockets.zig)**: a simple websockets chat +for the browser. I'll continue wrapping more of facil.io's functionality and adding stuff to zap diff --git a/build.zig b/build.zig index 0c7b4db..7ae9697 100644 --- a/build.zig +++ b/build.zig @@ -52,6 +52,7 @@ pub fn build(b: *std.build.Builder) !void { .{ .name = "endpoint_auth", .src = "examples/endpoint_auth/endpoint_auth.zig" }, .{ .name = "http_params", .src = "examples/http_params/http_params.zig" }, .{ .name = "cookies", .src = "examples/cookies/cookies.zig" }, + .{ .name = "websockets", .src = "examples/websockets/websockets.zig" }, }) |excfg| { const ex_name = excfg.name; const ex_src = excfg.src; diff --git a/build.zig.zon b/build.zig.zon index 841ee35..66b6566 100644 --- a/build.zig.zon +++ b/build.zig.zon @@ -1,12 +1,11 @@ .{ .name = "zap", - .version = "0.0.15", + .version = "0.0.16", .dependencies = .{ .@"facil.io" = .{ - .url = "https://github.com/zigzap/facil.io/archive/refs/tags/zap-0.0.7.tar.gz", - .hash = "1220d03e0579bbb726efb8224ea289b26227bc421158b45c1b16a60b31bfa400ab33", - + .url = "https://github.com/zigzap/facil.io/archive/refs/tags/zap-0.0.8.tar.gz", + .hash = "122071fcc675e114941331726291ca1f0c0c33751d992782c6abf1f0f2ddddc5734d", } } } diff --git a/examples/websockets/frontend/index.html b/examples/websockets/frontend/index.html new file mode 100644 index 0000000..9a15c86 --- /dev/null +++ b/examples/websockets/frontend/index.html @@ -0,0 +1,209 @@ + + + + + + + + ZAP-Chat + + + +
+
+

ZAP-Chat

+
+
+ + + +
+ + +
+ + +
+ +
+ + + + + diff --git a/examples/websockets/frontend/index.js b/examples/websockets/frontend/index.js new file mode 100644 index 0000000..4f2130b --- /dev/null +++ b/examples/websockets/frontend/index.js @@ -0,0 +1,69 @@ +// import { show_welcome } from "./screens/welcome_screen.js?version=0"; + +var chatContainer = document.getElementById("chat-container"); +var promptInput = document.getElementById("prompt-input"); +var sendButton = document.getElementById("send-button"); + +// var ws; + +function addBotMessage(message) { + var msg = document.createElement("DIV"); + msg.classList.add("message"); + msg.classList.add("bot"); + + let converter = new showdown.Converter(); + msg.innerHTML = converter.makeHtml(message); + chatContainer.appendChild(msg); + chatContainer.scrollTop = chatContainer.scrollHeight; +} + +function addUserMessage(message) { + var msg = document.createElement("DIV"); + msg.classList.add("message"); + msg.classList.add("user"); + + let converter = new showdown.Converter(); + msg.innerHTML = converter.makeHtml(message); + chatContainer.appendChild(msg); + chatContainer.scrollTop = chatContainer.scrollHeight; +} + +function onSend() { + let prompt = promptInput.value; + console.log(prompt); + // addUserMessage(prompt); + promptInput.value = ""; + ws.send(prompt); + promptInput.focus(); +} + +function show_markdown_body(container, task, body) { + let converter = new showdown.Converter(); + let m = document.createElement("DIV"); + m.innerHTML = converter.makeHtml(body); + m.classList.add("message"); + container.appendChild(m); +} + +function init() { + sendButton.onclick = onSend; + promptInput.addEventListener("keypress", function(event) { + if(event.key === "Enter") { + event.preventDefault(); + sendButton.click(); + } + }); + promptInput.focus(); +} + +init(); + + +var ws = new WebSocket("ws://localhost:3010/chat"); +ws.onmessage = function(e) { addBotMessage(e.data); return false;}; +ws.onclose = function(e) { console.log("closed"); }; +ws.onopen = function(e) { /*e.target.send("Yo!");*/ return false;}; + + + + diff --git a/examples/websockets/frontend/showdown.min.js b/examples/websockets/frontend/showdown.min.js new file mode 100644 index 0000000..fddb5a4 --- /dev/null +++ b/examples/websockets/frontend/showdown.min.js @@ -0,0 +1,3 @@ +/*! showdown v 2.1.0 - 21-04-2022 */ +!function(){function a(e){"use strict";var r={omitExtraWLInCodeBlocks:{defaultValue:!1,describe:"Omit the default extra whiteline added to code blocks",type:"boolean"},noHeaderId:{defaultValue:!1,describe:"Turn on/off generated header id",type:"boolean"},prefixHeaderId:{defaultValue:!1,describe:"Add a prefix to the generated header ids. Passing a string will prefix that string to the header id. Setting to true will add a generic 'section-' prefix",type:"string"},rawPrefixHeaderId:{defaultValue:!1,describe:'Setting this option to true will prevent showdown from modifying the prefix. This might result in malformed IDs (if, for instance, the " char is used in the prefix)',type:"boolean"},ghCompatibleHeaderId:{defaultValue:!1,describe:"Generate header ids compatible with github style (spaces are replaced with dashes, a bunch of non alphanumeric chars are removed)",type:"boolean"},rawHeaderId:{defaultValue:!1,describe:"Remove only spaces, ' and \" from generated header ids (including prefixes), replacing them with dashes (-). WARNING: This might result in malformed ids",type:"boolean"},headerLevelStart:{defaultValue:!1,describe:"The header blocks level start",type:"integer"},parseImgDimensions:{defaultValue:!1,describe:"Turn on/off image dimension parsing",type:"boolean"},simplifiedAutoLink:{defaultValue:!1,describe:"Turn on/off GFM autolink style",type:"boolean"},excludeTrailingPunctuationFromURLs:{defaultValue:!1,describe:"Excludes trailing punctuation from links generated with autoLinking",type:"boolean"},literalMidWordUnderscores:{defaultValue:!1,describe:"Parse midword underscores as literal underscores",type:"boolean"},literalMidWordAsterisks:{defaultValue:!1,describe:"Parse midword asterisks as literal asterisks",type:"boolean"},strikethrough:{defaultValue:!1,describe:"Turn on/off strikethrough support",type:"boolean"},tables:{defaultValue:!1,describe:"Turn on/off tables support",type:"boolean"},tablesHeaderId:{defaultValue:!1,describe:"Add an id to table headers",type:"boolean"},ghCodeBlocks:{defaultValue:!0,describe:"Turn on/off GFM fenced code blocks support",type:"boolean"},tasklists:{defaultValue:!1,describe:"Turn on/off GFM tasklist support",type:"boolean"},smoothLivePreview:{defaultValue:!1,describe:"Prevents weird effects in live previews due to incomplete input",type:"boolean"},smartIndentationFix:{defaultValue:!1,describe:"Tries to smartly fix indentation in es6 strings",type:"boolean"},disableForced4SpacesIndentedSublists:{defaultValue:!1,describe:"Disables the requirement of indenting nested sublists by 4 spaces",type:"boolean"},simpleLineBreaks:{defaultValue:!1,describe:"Parses simple line breaks as
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",dragon_face:"🐲",dress:"👗",dromedary_camel:"🐪",drooling_face:"🤤",droplet:"💧",drum:"🥁",duck:"🦆",dvd:"📀","e-mail":"📧",eagle:"🦅",ear:"👂",ear_of_rice:"🌾",earth_africa:"🌍",earth_americas:"🌎",earth_asia:"🌏",egg:"🥚",eggplant:"🍆",eight_pointed_black_star:"✴️",eight_spoked_asterisk:"✳️",electric_plug:"🔌",elephant:"🐘",email:"✉️",end:"🔚",envelope_with_arrow:"📩",euro:"💶",european_castle:"🏰",european_post_office:"🏤",evergreen_tree:"🌲",exclamation:"❗️",expressionless:"😑",eye:"👁",eye_speech_bubble:"👁‍🗨",eyeglasses:"👓",eyes:"👀",face_with_head_bandage:"🤕",face_with_thermometer:"🤒",fist_oncoming:"👊",factory:"🏭",fallen_leaf:"🍂",family_man_woman_boy:"👪",family_man_boy:"👨‍👦",family_man_boy_boy:"👨‍👦‍👦",family_man_girl:"👨‍👧",family_man_girl_boy:"👨‍👧‍👦",family_man_girl_girl:"👨‍👧‍👧",family_man_man_boy:"👨‍👨‍👦",family_man_man_boy_boy:"👨‍👨‍👦‍👦",family_man_man_girl:"👨‍👨‍👧",family_man_man_girl_boy:"👨‍👨‍👧‍👦",family_man_man_girl_girl:"👨‍👨‍👧‍👧",family_man_woman_boy_boy:"👨‍👩‍👦‍👦",family_man_woman_girl:"👨‍👩‍👧",family_man_woman_girl_boy:"👨‍👩‍👧‍👦",family_man_woman_girl_girl:"👨‍👩‍👧‍👧",family_woman_boy:"👩‍👦",family_woman_boy_boy:"👩‍👦‍👦",family_woman_girl:"👩‍👧",family_woman_girl_boy:"👩‍👧‍👦",family_woman_girl_girl:"👩‍👧‍👧",family_woman_woman_boy:"👩‍👩‍👦",family_woman_woman_boy_boy:"👩‍👩‍👦‍👦",family_woman_woman_girl:"👩‍👩‍👧",family_woman_woman_girl_boy:"👩‍👩‍👧‍👦",family_woman_woman_girl_girl:"👩‍👩‍👧‍👧",fast_forward:"⏩",fax:"📠",fearful:"😨",feet:"🐾",female_detective:"🕵️‍♀️",ferris_wheel:"🎡",ferry:"⛴",field_hockey:"🏑",file_cabinet:"🗄",file_folder:"📁",film_projector:"📽",film_strip:"🎞",fire:"🔥",fire_engine:"🚒",fireworks:"🎆",first_quarter_moon:"🌓",first_quarter_moon_with_face:"🌛",fish:"🐟",fish_cake:"🍥",fishing_pole_and_fish:"🎣",fist_raised:"✊",fist_left:"🤛",fist_right:"🤜",flags:"🎏",flashlight:"🔦",fleur_de_lis:"⚜️",flight_arrival:"🛬",flight_departure:"🛫",floppy_disk:"💾",flower_playing_cards:"🎴",flushed:"😳",fog:"🌫",foggy:"🌁",football:"🏈",footprints:"👣",fork_and_knife:"🍴",fountain:"⛲️",fountain_pen:"🖋",four_leaf_clover:"🍀",fox_face:"🦊",framed_picture:"🖼",free:"🆓",fried_egg:"🍳",fried_shrimp:"🍤",fries:"🍟",frog:"🐸",frowning:"😦",frowning_face:"☹️",frowning_man:"🙍‍♂️",frowning_woman:"🙍",middle_finger:"🖕",fuelpump:"⛽️",full_moon:"🌕",full_moon_with_face:"🌝",funeral_urn:"⚱️",game_die:"🎲",gear:"⚙️",gem:"💎",gemini:"♊️",ghost:"👻",gift:"🎁",gift_heart:"💝",girl:"👧",globe_with_meridians:"🌐",goal_net:"🥅",goat:"🐐",golf:"⛳️",golfing_man:"🏌️",golfing_woman:"🏌️‍♀️",gorilla:"🦍",grapes:"🍇",green_apple:"🍏",green_book:"📗",green_heart:"💚",green_salad:"🥗",grey_exclamation:"❕",grey_question:"❔",grimacing:"😬",grin:"😁",grinning:"😀",guardsman:"💂",guardswoman:"💂‍♀️",guitar:"🎸",gun:"🔫",haircut_woman:"💇",haircut_man:"💇‍♂️",hamburger:"🍔",hammer:"🔨",hammer_and_pick:"⚒",hammer_and_wrench:"🛠",hamster:"🐹",hand:"✋",handbag:"👜",handshake:"🤝",hankey:"💩",hatched_chick:"🐥",hatching_chick:"🐣",headphones:"🎧",hear_no_evil:"🙉",heart:"❤️",heart_decoration:"💟",heart_eyes:"😍",heart_eyes_cat:"😻",heartbeat:"💓",heartpulse:"💗",hearts:"♥️",heavy_check_mark:"✔️",heavy_division_sign:"➗",heavy_dollar_sign:"💲",heavy_heart_exclamation:"❣️",heavy_minus_sign:"➖",heavy_multiplication_x:"✖️",heavy_plus_sign:"➕",helicopter:"🚁",herb:"🌿",hibiscus:"🌺",high_brightness:"🔆",high_heel:"👠",hocho:"🔪",hole:"🕳",honey_pot:"🍯",horse:"🐴",horse_racing:"🏇",hospital:"🏥",hot_pepper:"🌶",hotdog:"🌭",hotel:"🏨",hotsprings:"♨️",hourglass:"⌛️",hourglass_flowing_sand:"⏳",house:"🏠",house_with_garden:"🏡",houses:"🏘",hugs:"🤗",hushed:"😯",ice_cream:"🍨",ice_hockey:"🏒",ice_skate:"⛸",icecream:"🍦",id:"🆔",ideograph_advantage:"🉐",imp:"👿",inbox_tray:"📥",incoming_envelope:"📨",tipping_hand_woman:"💁",information_source:"ℹ️",innocent:"😇",interrobang:"⁉️",iphone:"📱",izakaya_lantern:"🏮",jack_o_lantern:"🎃",japan:"🗾",japanese_castle:"🏯",japanese_goblin:"👺",japanese_ogre:"👹",jeans:"👖",joy:"😂",joy_cat:"😹",joystick:"🕹",kaaba:"🕋",key:"🔑",keyboard:"⌨️",keycap_ten:"🔟",kick_scooter:"🛴",kimono:"👘",kiss:"💋",kissing:"😗",kissing_cat:"😽",kissing_closed_eyes:"😚",kissing_heart:"😘",kissing_smiling_eyes:"😙",kiwi_fruit:"🥝",koala:"🐨",koko:"🈁",label:"🏷",large_blue_circle:"🔵",large_blue_diamond:"🔷",large_orange_diamond:"🔶",last_quarter_moon:"🌗",last_quarter_moon_with_face:"🌜",latin_cross:"✝️",laughing:"😆",leaves:"🍃",ledger:"📒",left_luggage:"🛅",left_right_arrow:"↔️",leftwards_arrow_with_hook:"↩️",lemon:"🍋",leo:"♌️",leopard:"🐆",level_slider:"🎚",libra:"♎️",light_rail:"🚈",link:"🔗",lion:"🦁",lips:"👄",lipstick:"💄",lizard:"🦎",lock:"🔒",lock_with_ink_pen:"🔏",lollipop:"🍭",loop:"➿",loud_sound:"🔊",loudspeaker:"📢",love_hotel:"🏩",love_letter:"💌",low_brightness:"🔅",lying_face:"🤥",m:"Ⓜ️",mag:"🔍",mag_right:"🔎",mahjong:"🀄️",mailbox:"📫",mailbox_closed:"📪",mailbox_with_mail:"📬",mailbox_with_no_mail:"📭",man:"👨",man_artist:"👨‍🎨",man_astronaut:"👨‍🚀",man_cartwheeling:"🤸‍♂️",man_cook:"👨‍🍳",man_dancing:"🕺",man_facepalming:"🤦‍♂️",man_factory_worker:"👨‍🏭",man_farmer:"👨‍🌾",man_firefighter:"👨‍🚒",man_health_worker:"👨‍⚕️",man_in_tuxedo:"🤵",man_judge:"👨‍⚖️",man_juggling:"🤹‍♂️",man_mechanic:"👨‍🔧",man_office_worker:"👨‍💼",man_pilot:"👨‍✈️",man_playing_handball:"🤾‍♂️",man_playing_water_polo:"🤽‍♂️",man_scientist:"👨‍🔬",man_shrugging:"🤷‍♂️",man_singer:"👨‍🎤",man_student:"👨‍🎓",man_teacher:"👨‍🏫",man_technologist:"👨‍💻",man_with_gua_pi_mao:"👲",man_with_turban:"👳",tangerine:"🍊",mans_shoe:"👞",mantelpiece_clock:"🕰",maple_leaf:"🍁",martial_arts_uniform:"🥋",mask:"😷",massage_woman:"💆",massage_man:"💆‍♂️",meat_on_bone:"🍖",medal_military:"🎖",medal_sports:"🏅",mega:"📣",melon:"🍈",memo:"📝",men_wrestling:"🤼‍♂️",menorah:"🕎",mens:"🚹",metal:"🤘",metro:"🚇",microphone:"🎤",microscope:"🔬",milk_glass:"🥛",milky_way:"🌌",minibus:"🚐",minidisc:"💽",mobile_phone_off:"📴",money_mouth_face:"🤑",money_with_wings:"💸",moneybag:"💰",monkey:"🐒",monkey_face:"🐵",monorail:"🚝",moon:"🌔",mortar_board:"🎓",mosque:"🕌",motor_boat:"🛥",motor_scooter:"🛵",motorcycle:"🏍",motorway:"🛣",mount_fuji:"🗻",mountain:"⛰",mountain_biking_man:"🚵",mountain_biking_woman:"🚵‍♀️",mountain_cableway:"🚠",mountain_railway:"🚞",mountain_snow:"🏔",mouse:"🐭",mouse2:"🐁",movie_camera:"🎥",moyai:"🗿",mrs_claus:"🤶",muscle:"💪",mushroom:"🍄",musical_keyboard:"🎹",musical_note:"🎵",musical_score:"🎼",mute:"🔇",nail_care:"💅",name_badge:"📛",national_park:"🏞",nauseated_face:"🤢",necktie:"👔",negative_squared_cross_mark:"❎",nerd_face:"🤓",neutral_face:"😐",new:"🆕",new_moon:"🌑",new_moon_with_face:"🌚",newspaper:"📰",newspaper_roll:"🗞",next_track_button:"⏭",ng:"🆖",no_good_man:"🙅‍♂️",no_good_woman:"🙅",night_with_stars:"🌃",no_bell:"🔕",no_bicycles:"🚳",no_entry:"⛔️",no_entry_sign:"🚫",no_mobile_phones:"📵",no_mouth:"😶",no_pedestrians:"🚷",no_smoking:"🚭","non-potable_water":"🚱",nose:"👃",notebook:"📓",notebook_with_decorative_cover:"📔",notes:"🎶",nut_and_bolt:"🔩",o:"⭕️",o2:"🅾️",ocean:"🌊",octopus:"🐙",oden:"🍢",office:"🏢",oil_drum:"🛢",ok:"🆗",ok_hand:"👌",ok_man:"🙆‍♂️",ok_woman:"🙆",old_key:"🗝",older_man:"👴",older_woman:"👵",om:"🕉",on:"🔛",oncoming_automobile:"🚘",oncoming_bus:"🚍",oncoming_police_car:"🚔",oncoming_taxi:"🚖",open_file_folder:"📂",open_hands:"👐",open_mouth:"😮",open_umbrella:"☂️",ophiuchus:"⛎",orange_book:"📙",orthodox_cross:"☦️",outbox_tray:"📤",owl:"🦉",ox:"🐂",package:"📦",page_facing_up:"📄",page_with_curl:"📃",pager:"📟",paintbrush:"🖌",palm_tree:"🌴",pancakes:"🥞",panda_face:"🐼",paperclip:"📎",paperclips:"🖇",parasol_on_ground:"⛱",parking:"🅿️",part_alternation_mark:"〽️",partly_sunny:"⛅️",passenger_ship:"🛳",passport_control:"🛂",pause_button:"⏸",peace_symbol:"☮️",peach:"🍑",peanuts:"🥜",pear:"🍐",pen:"🖊",pencil2:"✏️",penguin:"🐧",pensive:"😔",performing_arts:"🎭",persevere:"😣",person_fencing:"🤺",pouting_woman:"🙎",phone:"☎️",pick:"⛏",pig:"🐷",pig2:"🐖",pig_nose:"🐽",pill:"💊",pineapple:"🍍",ping_pong:"🏓",pisces:"♓️",pizza:"🍕",place_of_worship:"🛐",plate_with_cutlery:"🍽",play_or_pause_button:"⏯",point_down:"👇",point_left:"👈",point_right:"👉",point_up:"☝️",point_up_2:"👆",police_car:"🚓",policewoman:"👮‍♀️",poodle:"🐩",popcorn:"🍿",post_office:"🏣",postal_horn:"📯",postbox:"📮",potable_water:"🚰",potato:"🥔",pouch:"👝",poultry_leg:"🍗",pound:"💷",rage:"😡",pouting_cat:"😾",pouting_man:"🙎‍♂️",pray:"🙏",prayer_beads:"📿",pregnant_woman:"🤰",previous_track_button:"⏮",prince:"🤴",princess:"👸",printer:"🖨",purple_heart:"💜",purse:"👛",pushpin:"📌",put_litter_in_its_place:"🚮",question:"❓",rabbit:"🐰",rabbit2:"🐇",racehorse:"🐎",racing_car:"🏎",radio:"📻",radio_button:"🔘",radioactive:"☢️",railway_car:"🚃",railway_track:"🛤",rainbow:"🌈",rainbow_flag:"🏳️‍🌈",raised_back_of_hand:"🤚",raised_hand_with_fingers_splayed:"🖐",raised_hands:"🙌",raising_hand_woman:"🙋",raising_hand_man:"🙋‍♂️",ram:"🐏",ramen:"🍜",rat:"🐀",record_button:"⏺",recycle:"♻️",red_circle:"🔴",registered:"®️",relaxed:"☺️",relieved:"😌",reminder_ribbon:"🎗",repeat:"🔁",repeat_one:"🔂",rescue_worker_helmet:"⛑",restroom:"🚻",revolving_hearts:"💞",rewind:"⏪",rhinoceros:"🦏",ribbon:"🎀",rice:"🍚",rice_ball:"🍙",rice_cracker:"🍘",rice_scene:"🎑",right_anger_bubble:"🗯",ring:"💍",robot:"🤖",rocket:"🚀",rofl:"🤣",roll_eyes:"🙄",roller_coaster:"🎢",rooster:"🐓",rose:"🌹",rosette:"🏵",rotating_light:"🚨",round_pushpin:"📍",rowing_man:"🚣",rowing_woman:"🚣‍♀️",rugby_football:"🏉",running_man:"🏃",running_shirt_with_sash:"🎽",running_woman:"🏃‍♀️",sa:"🈂️",sagittarius:"♐️",sake:"🍶",sandal:"👡",santa:"🎅",satellite:"📡",saxophone:"🎷",school:"🏫",school_satchel:"🎒",scissors:"✂️",scorpion:"🦂",scorpius:"♏️",scream:"😱",scream_cat:"🙀",scroll:"📜",seat:"💺",secret:"㊙️",see_no_evil:"🙈",seedling:"🌱",selfie:"🤳",shallow_pan_of_food:"🥘",shamrock:"☘️",shark:"🦈",shaved_ice:"🍧",sheep:"🐑",shell:"🐚",shield:"🛡",shinto_shrine:"⛩",ship:"🚢",shirt:"👕",shopping:"🛍",shopping_cart:"🛒",shower:"🚿",shrimp:"🦐",signal_strength:"📶",six_pointed_star:"🔯",ski:"🎿",skier:"⛷",skull:"💀",skull_and_crossbones:"☠️",sleeping:"😴",sleeping_bed:"🛌",sleepy:"😪",slightly_frowning_face:"🙁",slightly_smiling_face:"🙂",slot_machine:"🎰",small_airplane:"🛩",small_blue_diamond:"🔹",small_orange_diamond:"🔸",small_red_triangle:"🔺",small_red_triangle_down:"🔻",smile:"😄",smile_cat:"😸",smiley:"😃",smiley_cat:"😺",smiling_imp:"😈",smirk:"😏",smirk_cat:"😼",smoking:"🚬",snail:"🐌",snake:"🐍",sneezing_face:"🤧",snowboarder:"🏂",snowflake:"❄️",snowman:"⛄️",snowman_with_snow:"☃️",sob:"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+//# sourceMappingURL=showdown.min.js.map diff --git a/examples/websockets/websockets.zig b/examples/websockets/websockets.zig new file mode 100644 index 0000000..0e5f66b --- /dev/null +++ b/examples/websockets/websockets.zig @@ -0,0 +1,180 @@ +const std = @import("std"); +const zap = @import("zap"); +const WebSockets = zap.WebSockets; + +const Context = struct { + userName: []const u8, + channel: []const u8, + // we need to hold on to them and just re-use them for every incoming connection + subscribeArgs: WebsocketHandler.SubscribeArgs, + settings: WebsocketHandler.WebSocketSettings, +}; + +const ContextList = std.ArrayList(*Context); + +const ContextManager = struct { + allocator: std.mem.Allocator, + channel: []const u8, + usernamePrefix: []const u8, + lock: std.Thread.Mutex = .{}, + contexts: ContextList = undefined, + + const Self = @This(); + + pub fn init(allocator: std.mem.Allocator, channelName: []const u8, usernamePrefix: []const u8) Self { + return .{ + .allocator = allocator, + .channel = channelName, + .usernamePrefix = usernamePrefix, + .contexts = ContextList.init(allocator), + }; + } + + pub fn deinit(self: *Self) void { + for (self.contexts.items) |ctx| { + self.allocator.free(ctx.userName); + } + self.contexts.deinit(); + } + + pub fn newContext(self: *Self) !*Context { + self.lock.lock(); + defer self.lock.unlock(); + + var ctx = try self.allocator.create(Context); + var userName = try std.fmt.allocPrint(self.allocator, "{s}{d}", .{ self.usernamePrefix, self.contexts.items.len }); + ctx.* = .{ + .userName = userName, + .channel = self.channel, + // used in subscribe() + .subscribeArgs = .{ + .channel = self.channel, + .force_text = true, + .context = ctx, + }, + // used in upgrade() + .settings = .{ + .on_open = on_open_websocket, + .on_close = on_close_websocket, + .on_message = handle_websocket_message, + .context = ctx, + }, + }; + try self.contexts.append(ctx); + return ctx; + } +}; + +// +// Websocket Callbacks +// +fn on_open_websocket(context: ?*Context, handle: WebSockets.WsHandle) void { + if (context) |ctx| { + _ = WebsocketHandler.subscribe(handle, &ctx.subscribeArgs) catch |err| { + std.log.err("Error opening websocket: {any}", .{err}); + return; + }; + + // say hello + var buf: [128]u8 = undefined; + const message = std.fmt.bufPrint(&buf, "{s} joined the chat.", .{ctx.userName}) catch unreachable; + + // send notification to all others + WebsocketHandler.publish(.{ .channel = ctx.channel, .message = message }); + std.log.info("new websocket opened: {s}", .{message}); + } +} + +fn on_close_websocket(context: ?*Context, uuid: isize) void { + _ = uuid; + if (context) |ctx| { + // say goodbye + var buf: [128]u8 = undefined; + const message = std.fmt.bufPrint(&buf, "{s} left the chat.", .{ctx.userName}) catch unreachable; + + // send notification to all others + WebsocketHandler.publish(.{ .channel = ctx.channel, .message = message }); + std.log.info("websocket closed: {s}", .{message}); + } +} +fn handle_websocket_message(context: ?*Context, handle: WebSockets.WsHandle, message: []const u8, is_text: bool) void { + _ = is_text; + _ = handle; + if (context) |ctx| { + // say goodbye + var buf: [128]u8 = undefined; + const chat_message = std.fmt.bufPrint(&buf, "{s}: {s}", .{ ctx.userName, message }) catch unreachable; + + // send notification to all others + WebsocketHandler.publish(.{ .channel = ctx.channel, .message = chat_message }); + std.log.info("{s}", .{chat_message}); + } +} + +// +// HTTP stuff +// +fn on_request(r: zap.SimpleRequest) void { + r.setHeader("Server", "zap.example") catch unreachable; + r.sendBody("

This is a simple Websocket chatroom example

") catch return; +} + +fn on_upgrade(r: zap.SimpleRequest, target_protocol: []const u8) void { + // make sure we're talking the right protocol + if (!std.mem.eql(u8, target_protocol, "websocket")) { + std.log.warn("received illegal target protocol: {s}", .{target_protocol}); + r.setStatus(.bad_request); + r.sendBody("400 - BAD REQUEST") catch unreachable; + return; + } + var context = GlobalContextManager.newContext() catch |err| { + std.log.err("Error creating context: {any}", .{err}); + return; + }; + + WebsocketHandler.upgrade(r.h, &context.settings) catch |err| { + std.log.err("Error in websocketUpgrade(): {any}", .{err}); + return; + }; + std.log.info("connection upgrade OK", .{}); +} + +// global variables, yeah! +var GlobalContextManager: ContextManager = undefined; + +const WebsocketHandler = WebSockets.Handler(Context); +var handler_instance: WebsocketHandler = .{}; + +// here we go +pub fn main() !void { + var gpa = std.heap.GeneralPurposeAllocator(.{ + .thread_safe = true, + }){}; + var allocator = gpa.allocator(); + + GlobalContextManager = ContextManager.init(allocator, "chatroom", "user-"); + defer GlobalContextManager.deinit(); + + // setup listener + var listener = zap.SimpleHttpListener.init( + .{ + .port = 3010, + .on_request = on_request, + .on_upgrade = on_upgrade, + .max_clients = 1000, + .max_body_size = 1 * 1024, + .public_folder = "examples/websockets/frontend", + .log = true, + }, + ); + try listener.listen(); + std.log.info("", .{}); + std.log.info("Connect with browser to http://localhost:3010.", .{}); + std.log.info("Connect to websocket on ws://localhost:3010.", .{}); + std.log.info("Terminate with CTRL+C", .{}); + + zap.start(.{ + .threads = 1, + .workers = 1, + }); +} diff --git a/src/fio.zig b/src/fio.zig index 6346c85..22abfa3 100644 --- a/src/fio.zig +++ b/src/fio.zig @@ -362,6 +362,32 @@ pub const websocket_settings_s = extern struct { on_close: ?*const fn (isize, ?*anyopaque) callconv(.C) void, udata: ?*anyopaque, }; + +// struct websocket_subscribe_s_zigcompat { +// ws_s *ws; +// fio_str_info_s channel; +// void (*on_message)(ws_s *ws, fio_str_info_s channel, fio_str_info_s msg, void *udata); +// void (*on_unsubscribe)(void *udata); +// void *udata; +// fio_match_fn match; +// unsigned char force_binary; +// unsigned char force_text; +// }; + +pub const websocket_subscribe_s_zigcompat = extern struct { + ws: ?*ws_s, + channel: fio_str_info_s, + on_message: ?*const fn (?*ws_s, fio_str_info_s, fio_str_info_s, ?*anyopaque) callconv(.C) void, + on_unsubscribe: ?*const fn (?*anyopaque) callconv(.C) void, + udata: ?*anyopaque, + match: fio_match_fn, + force_binary: u8, + force_text: u8, +}; + +/// 0 on failure +pub extern fn websocket_subscribe_zigcompat(websocket_subscribe_s_zigcompat) callconv(.C) usize; + pub extern fn http_upgrade2ws(http: [*c]http_s, websocket_settings_s) c_int; pub extern fn websocket_connect(url: [*c]const u8, settings: websocket_settings_s) c_int; pub extern fn websocket_attach(uuid: isize, http_settings: [*c]http_settings_s, args: [*c]websocket_settings_s, data: ?*anyopaque, length: usize) void; @@ -375,6 +401,19 @@ pub const struct_websocket_subscribe_s = opaque {}; pub extern fn websocket_subscribe(args: struct_websocket_subscribe_s) usize; pub extern fn websocket_unsubscribe(ws: ?*ws_s, subscription_id: usize) void; pub extern fn websocket_optimize4broadcasts(@"type": isize, enable: c_int) void; + +pub extern fn fio_publish(args: fio_publish_args_s) void; +pub const fio_publish_args_s = struct_fio_publish_args_s; +pub const struct_fio_publish_args_s = extern struct { + engine: ?*anyopaque = null, + // we don't support engines other than default + // engine: [*c]const fio_pubsub_engine_s, + filter: i32 = 0, + channel: fio_str_info_s, + message: fio_str_info_s, + is_json: u8, +}; + pub const http_sse_s = struct_http_sse_s; pub const struct_http_sse_s = extern struct { on_open: ?*const fn ([*c]http_sse_s) callconv(.C) void, diff --git a/src/websockets.zig b/src/websockets.zig new file mode 100644 index 0000000..515132d --- /dev/null +++ b/src/websockets.zig @@ -0,0 +1,207 @@ +const std = @import("std"); +const zap = @import("zap.zig"); +const fio = @import("fio.zig"); +const util = @import("util.zig"); + +pub const WsHandle = ?*fio.ws_s; +pub fn Handler(comptime ContextType: type) type { + return struct { + /// OnMessage Callback on a websocket + pub const WsOnMessageFn = *const fn ( + /// user-provided context, passed in from websocketHttpUpgrade() + context: ?*ContextType, + /// websocket handle, used to identify the websocket internally + handle: WsHandle, + /// the received message + message: []const u8, + /// indicator if message is text or binary + is_text: bool, + ) void; + + /// Callback when websocket is closed. uuid is a connection identifier, + /// it is -1 if a connection could not be established + pub const WsOnCloseFn = *const fn (context: ?*ContextType, uuid: isize) void; + + /// A websocket callback function. provides the context passed in at + /// websocketHttpUpgrade(). + pub const WsFn = *const fn (context: ?*ContextType, handle: WsHandle) void; + + pub const WebSocketSettings = struct { + /// on_message(context, handle, message, is_text) + on_message: ?WsOnMessageFn = null, + /// on_open(context) + on_open: ?WsFn = null, + /// on_ready(context) + on_ready: ?WsFn = null, + /// on_shutdown(context, uuid) + on_shutdown: ?WsFn = null, + /// on_close(context) + on_close: ?WsOnCloseFn = null, + /// passed-in user-defined context + context: ?*ContextType = null, + }; + + /// This function will end the HTTP stage of the connection and attempt to "upgrade" to a WebSockets connection. + pub fn upgrade(h: [*c]fio.http_s, settings: *WebSocketSettings) WebSocketError!void { + var fio_settings: fio.websocket_settings_s = .{ + .on_message = internal_on_message, + .on_open = internal_on_open, + .on_ready = internal_on_ready, + .on_shutdown = internal_on_shutdown, + .on_close = internal_on_close, + .udata = settings, + }; + if (fio.http_upgrade2ws(h, fio_settings) != 0) { + return error.UpgradeError; + } + } + + fn internal_on_message(handle: WsHandle, msg: fio.fio_str_info_s, is_text: u8) callconv(.C) void { + var user_provided_settings: ?*WebSocketSettings = @ptrCast(?*WebSocketSettings, @alignCast(@alignOf(?*WebSocketSettings), fio.websocket_udata_get(handle))); + var message = msg.data[0..msg.len]; + if (user_provided_settings) |settings| { + if (settings.on_message) |on_message| { + on_message(settings.context, handle, message, is_text == 1); + } + } + } + + fn internal_on_open(handle: WsHandle) callconv(.C) void { + var user_provided_settings: ?*WebSocketSettings = @ptrCast(?*WebSocketSettings, @alignCast(@alignOf(?*WebSocketSettings), fio.websocket_udata_get(handle))); + if (user_provided_settings) |settings| { + if (settings.on_open) |on_open| { + on_open(settings.context, handle); + } + } + } + + fn internal_on_ready(handle: WsHandle) callconv(.C) void { + var user_provided_settings: ?*WebSocketSettings = @ptrCast(?*WebSocketSettings, @alignCast(@alignOf(?*WebSocketSettings), fio.websocket_udata_get(handle))); + if (user_provided_settings) |settings| { + if (settings.on_ready) |on_ready| { + on_ready(settings.context, handle); + } + } + } + + fn internal_on_shutdown(handle: WsHandle) callconv(.C) void { + var user_provided_settings: ?*WebSocketSettings = @ptrCast(?*WebSocketSettings, @alignCast(@alignOf(?*WebSocketSettings), fio.websocket_udata_get(handle))); + if (user_provided_settings) |settings| { + if (settings.on_shutdown) |on_shutdown| { + on_shutdown(settings.context, handle); + } + } + } + + fn internal_on_close(uuid: isize, udata: ?*anyopaque) callconv(.C) void { + var user_provided_settings: ?*WebSocketSettings = @ptrCast(?*WebSocketSettings, @alignCast(@alignOf(?*WebSocketSettings), udata)); + if (user_provided_settings) |settings| { + if (settings.on_close) |on_close| { + on_close(settings.context, uuid); + } + } + } + + const WebSocketError = error{ + WriteError, + UpgradeError, + SubscribeError, + }; + + pub inline fn write(handle: WsHandle, message: []const u8, is_text: bool) WebSocketError!void { + if (fio.websocket_write( + handle, + fio.str2fio(message), + if (is_text) 1 else 0, + ) != 0) { + return error.WriteError; + } + } + + pub fn udataToContext(udata: *anyopaque) *ContextType { + return @ptrCast(*ContextType, @alignCast(@alignOf(*ContextType), udata)); + } + + pub inline fn close(handle: WsHandle) void { + fio.websocket_close(handle); + } + + const PublishArgs = struct { + channel: []const u8, + message: []const u8, + is_json: bool = false, + }; + + /// publish a message in a channel + pub inline fn publish(args: PublishArgs) void { + fio.fio_publish(.{ + .channel = util.str2fio(args.channel), + .message = util.str2fio(args.message), + .is_json = if (args.is_json) 1 else 0, + }); + } + + pub const SubscriptionOnMessageFn = *const fn (context: ?*ContextType, handle: WsHandle, channel: []const u8, message: []const u8) void; + pub const SubscriptionOnUnsubscribeFn = *const fn (context: ?*ContextType) void; + + pub const SubscribeArgs = struct { + channel: []const u8, + on_message: ?SubscriptionOnMessageFn = null, + on_unsubscribe: ?SubscriptionOnUnsubscribeFn = null, + /// this is not wrapped nicely yet + match: fio.fio_match_fn = null, + /// When using direct message forwarding (no on_message callback), this indicates if + /// messages should be sent to the client as binary blobs, which is the safest approach. + /// By default, facil.io will test for UTF-8 data validity and send the data as text if + /// it's a valid UTF-8. Messages above ~32Kb might be assumed to be binary rather than + /// tested. + force_binary: bool = false, + /// When using direct message forwarding (no on_message callback), this indicates if + /// messages should be sent to the client as UTF-8 text. By default, facil.io will test + /// for UTF-8 data validity and send the data as text if it's a valid UTF-8. Messages + /// above ~32Kb might be assumed to be binary rather than tested. force_binary has + /// precedence over force_text. + force_text: bool = false, + context: ?*ContextType = null, + }; + + /// Returns a subscription ID on success and 0 on failure. + /// we copy the pointer so make sure the struct stays valid. + /// we need it to look up the ziggified callbacks. + pub inline fn subscribe(handle: WsHandle, args: *SubscribeArgs) WebSocketError!usize { + if (handle == null) return error.SubscribeError; + var fio_args: fio.websocket_subscribe_s_zigcompat = .{ + .ws = handle.?, + .channel = util.str2fio(args.channel), + .on_message = if (args.on_message) |_| internal_subscription_on_message else null, + .on_unsubscribe = if (args.on_unsubscribe) |_| internal_subscription_on_unsubscribe else null, + .match = args.match, + .force_binary = if (args.force_binary) 1 else 0, + .force_text = if (args.force_text) 1 else 0, + .udata = args, + }; + const ret = fio.websocket_subscribe_zigcompat(fio_args); + if (ret == 0) { + return error.SubscribeError; + } + return ret; + } + + pub fn internal_subscription_on_message(handle: WsHandle, channel: fio.fio_str_info_s, message: fio.fio_str_info_s, udata: ?*anyopaque) callconv(.C) void { + if (udata) |p| { + const args = @ptrCast(*SubscribeArgs, @alignCast(@alignOf(*SubscribeArgs), p)); + if (args.on_message) |on_message| { + on_message(args.context, handle, channel.data[0..channel.len], message.data[0..message.len]); + } + } + } + pub fn internal_subscription_on_unsubscribe(udata: ?*anyopaque) callconv(.C) void { + if (udata) |p| { + const args = @ptrCast(*SubscribeArgs, @alignCast(@alignOf(*SubscribeArgs), p)); + if (args.on_unsubscribe) |on_unsubscribe| { + on_unsubscribe(args.context); + } + } + } + }; +} diff --git a/src/zap.zig b/src/zap.zig index 5afcff1..06b8ac6 100644 --- a/src/zap.zig +++ b/src/zap.zig @@ -10,6 +10,7 @@ pub usingnamespace @import("util.zig"); pub usingnamespace @import("http.zig"); pub usingnamespace @import("mustache.zig"); pub usingnamespace @import("http_auth.zig"); +pub const WebSockets = @import("websockets.zig"); pub const Log = @import("log.zig"); @@ -496,16 +497,32 @@ pub const CookieArgs = struct { pub const HttpRequestFn = *const fn (r: [*c]fio.http_s) callconv(.C) void; pub const SimpleHttpRequestFn = *const fn (SimpleRequest) void; +/// websocket connection upgrade +/// fn(request, targetstring) +pub const SimpleHttpUpgradeFn = *const fn (r: SimpleRequest, target_protocol: []const u8) void; + +/// http finish, called when zap finishes. You get your udata back in the +/// struct. +pub const SimpleHttpFinishSettings = [*c]fio.struct_http_settings_s; +pub const SimpleHttpFinishFn = *const fn (SimpleHttpFinishSettings) void; + pub const SimpleHttpListenerSettings = struct { port: usize, interface: [*c]const u8 = null, on_request: ?SimpleHttpRequestFn, - on_response: ?*const fn ([*c]fio.http_s) callconv(.C) void = null, + on_response: ?SimpleHttpRequestFn = null, + on_upgrade: ?SimpleHttpUpgradeFn = null, + on_finish: ?SimpleHttpFinishFn = null, + // provide any pointer in there for "user data". it will be passed pack in + // on_finish()'s copy of the struct_http_settings_s + udata: ?*anyopaque = null, public_folder: ?[]const u8 = null, max_clients: ?isize = null, max_body_size: ?usize = null, timeout: ?u8 = null, log: bool = false, + ws_timeout: u8 = 40, + ws_max_msg_size: usize = 262144, }; pub const SimpleHttpListener = struct { @@ -520,6 +537,9 @@ pub const SimpleHttpListener = struct { }; } + // on_upgrade: ?*const fn ([*c]fio.http_s, [*c]u8, usize) callconv(.C) void = null, + // on_finish: ?*const fn ([*c]fio.struct_http_settings_s) callconv(.C) void = null, + // we could make it dynamic by passing a SimpleHttpListener via udata pub fn theOneAndOnlyRequestCallBack(r: [*c]fio.http_s) callconv(.C) void { if (the_one_and_only_listener) |l| { @@ -534,6 +554,39 @@ pub const SimpleHttpListener = struct { } } + pub fn theOneAndOnlyResponseCallBack(r: [*c]fio.http_s) callconv(.C) void { + if (the_one_and_only_listener) |l| { + var req: SimpleRequest = .{ + .path = util.fio2str(r.*.path), + .query = util.fio2str(r.*.query), + .body = util.fio2str(r.*.body), + .method = util.fio2str(r.*.method), + .h = r, + }; + l.settings.on_response.?(req); + } + } + + pub fn theOneAndOnlyUpgradeCallBack(r: [*c]fio.http_s, target: [*c]u8, target_len: usize) callconv(.C) void { + if (the_one_and_only_listener) |l| { + var req: SimpleRequest = .{ + .path = util.fio2str(r.*.path), + .query = util.fio2str(r.*.query), + .body = util.fio2str(r.*.body), + .method = util.fio2str(r.*.method), + .h = r, + }; + var zigtarget: []u8 = target[0..target_len]; + l.settings.on_upgrade.?(req, zigtarget); + } + } + + pub fn theOneAndOnlyFinishCallBack(s: [*c]fio.struct_http_settings_s) callconv(.C) void { + if (the_one_and_only_listener) |l| { + l.settings.on_finish.?(s); + } + } + pub fn listen(self: *Self) !void { var pfolder: [*c]const u8 = null; var pfolder_len: usize = 0; @@ -546,22 +599,23 @@ pub const SimpleHttpListener = struct { var x: fio.http_settings_s = .{ .on_request = if (self.settings.on_request) |_| Self.theOneAndOnlyRequestCallBack else null, - .on_upgrade = null, - .on_response = self.settings.on_response, - .on_finish = null, + .on_upgrade = if (self.settings.on_upgrade) |_| Self.theOneAndOnlyUpgradeCallBack else null, + .on_response = if (self.settings.on_response) |_| Self.theOneAndOnlyResponseCallBack else null, + .on_finish = if (self.settings.on_finish) |_| Self.theOneAndOnlyFinishCallBack else null, .udata = null, .public_folder = pfolder, .public_folder_length = pfolder_len, .max_header_size = 32 * 1024, .max_body_size = self.settings.max_body_size orelse 50 * 1024 * 1024, - .max_clients = self.settings.max_clients orelse 100, + // fio provides good default: + .max_clients = self.settings.max_clients orelse 0, .tls = null, .reserved1 = 0, .reserved2 = 0, .reserved3 = 0, .ws_max_msg_size = 0, .timeout = self.settings.timeout orelse 5, - .ws_timeout = 0, + .ws_timeout = self.settings.ws_timeout, .log = if (self.settings.log) 1 else 0, .is_client = 0, }; @@ -624,7 +678,7 @@ pub fn listen(port: [*c]const u8, interface: [*c]const u8, settings: ListenSetti var x: fio.http_settings_s = .{ .on_request = settings.on_request, .on_upgrade = settings.on_upgrade, - .on_response = settings.on_response orelse null, + .on_response = settings.on_response, .on_finish = settings.on_finish, .udata = null, .public_folder = pfolder, @@ -636,7 +690,7 @@ pub fn listen(port: [*c]const u8, interface: [*c]const u8, settings: ListenSetti .reserved1 = 0, .reserved2 = 0, .reserved3 = 0, - .ws_max_msg_size = 0, + .ws_max_msg_size = settings.ws_max_msg_size, .timeout = settings.keepalive_timeout_s, .ws_timeout = 0, .log = if (settings.log) 1 else 0,