SocketIO.h

//
//  SocketIO.h
//  v0.2.5 ARC
//
//  based on 
//  socketio-cocoa https://github.com/fpotter/socketio-cocoa
//  by Fred Potter <fpotter@pieceable.com>
//
//  using
//  https://github.com/square/SocketRocket
//  https://github.com/stig/json-framework/
//
//  reusing some parts of
//  /socket.io/socket.io.js
//
//  Created by Philipp Kyeck http://beta-interactive.de
//
//  Updated by 
//    samlown   https://github.com/samlown
//    kayleg    https://github.com/kayleg
//    taiyangc  https://github.com/taiyangc
//

#import <Foundation/Foundation.h>

@class SRWebSocket;
@class SocketIO;
@class SocketIOPacket;

typedef void(^SocketIOCallback)(id argsData);

extern NSString* const SocketIOError;

typedef enum {
    SocketIOServerRespondedWithInvalidConnectionData = -1,
    SocketIOServerRespondedWithDisconnect = -2,
    SocketIOHeartbeatTimeout = -3,
    SocketIOWebSocketClosed = -4
} SocketIOErrorCodes;

@protocol SocketIODelegate <NSObject>
@optional
- (void) socketIODidConnect:(SocketIO *)socket;
- (void) socketIODidDisconnect:(SocketIO *)socket __attribute__((deprecated));
- (void) socketIODidDisconnect:(SocketIO *)socket disconnectedWithError:(NSError *)error;
- (void) socketIO:(SocketIO *)socket didReceiveMessage:(SocketIOPacket *)packet;
- (void) socketIO:(SocketIO *)socket didReceiveJSON:(SocketIOPacket *)packet;
- (void) socketIO:(SocketIO *)socket didReceiveEvent:(SocketIOPacket *)packet;
- (void) socketIO:(SocketIO *)socket didSendMessage:(SocketIOPacket *)packet;
- (void) socketIOHandshakeFailed:(SocketIO *)socket;
- (void) socketIO:(SocketIO *)socket failedToConnectWithError:(NSError *)error;
@end


@interface SocketIO : NSObject <NSURLConnectionDelegate>
{
    NSString *_host;
    NSInteger _port;
    NSString *_sid;
    NSString *_endpoint;
    NSDictionary *_params;
    
    __unsafe_unretained id<SocketIODelegate> _delegate;
    
    SRWebSocket *_webSocket;
    
    BOOL _isConnected;
    BOOL _isConnecting;
    BOOL _useSecure;
    
    // heartbeat
    NSTimeInterval _heartbeatTimeout;
    NSTimer *_timeout;
    
    NSMutableArray *_queue;
    
    // acknowledge
    NSMutableDictionary *_acks;
    NSInteger _ackCount;
    
    // http request
    NSMutableData * _httpRequestData;
}

@property (nonatomic, readonly) BOOL isConnected, isConnecting;
@property (nonatomic) BOOL useSecure;
@property (nonatomic, unsafe_unretained) id<SocketIODelegate> delegate;

- (id) initWithDelegate:(id<SocketIODelegate>)delegate;
- (void) connectToHost:(NSString *)host onPort:(NSInteger)port;
- (void) connectToHost:(NSString *)host onPort:(NSInteger)port withParams:(NSDictionary *)params;
- (void) connectToHost:(NSString *)host onPort:(NSInteger)port withParams:(NSDictionary *)params withNamespace:(NSString *)endpoint;
- (void) disconnect;

- (void) sendMessage:(NSString *)data;
- (void) sendMessage:(NSString *)data withAcknowledge:(SocketIOCallback)function;
- (void) sendJSON:(NSDictionary *)data;
- (void) sendJSON:(NSDictionary *)data withAcknowledge:(SocketIOCallback)function;
- (void) sendEvent:(NSString *)eventName withData:(id)data;
- (void) sendEvent:(NSString *)eventName withData:(id)data andAcknowledge:(SocketIOCallback)function;
- (void) sendAcknowledgement:(NSString*)pId withArgs:(NSArray *)data;

@end


@interface SocketIOPacket : NSObject
{
    NSString *type;
    NSString *pId;
    NSString *ack;
    NSString *name;
    NSString *data;
    NSArray *args;
    NSString *endpoint;
    NSArray *_types;
}

@property (nonatomic, copy) NSString *type;
@property (nonatomic, copy) NSString *pId;
@property (nonatomic, copy) NSString *ack;
@property (nonatomic, copy) NSString *name;
@property (nonatomic, copy) NSString *data;
@property (nonatomic, copy) NSString *endpoint;
@property (nonatomic, copy) NSArray *args;

- (id) initWithType:(NSString *)packetType;
- (id) initWithTypeIndex:(int)index;
- (id) dataAsJSON;
- (NSNumber *) typeAsNumber;
- (NSString *) typeForIndex:(int)index;

@end