blob: 48ea96b165c3f580525388b729e914465bfff2c7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/**
* socket.io
* Copyright(c) 2011 LearnBoost <dev@learnboost.com>
* MIT Licensed
*/
(function (exports, io) {
/**
* Expose constructor.
*/
exports.Transport = Transport;
/**
* This is the transport template for all supported transport methods.
*
* @constructor
* @api public
*/
function Transport (socket, sessid) {
this.socket = socket;
this.sessid = sessid;
};
/**
* Apply EventEmitter mixin.
*/
io.util.mixin(Transport, io.EventEmitter);
/**
* Indicates whether heartbeats is enabled for this transport
*
* @api private
*/
Transport.prototype.heartbeats = function () {
return true;
};
/**
* Handles the response from the server. When a new response is received
* it will automatically update the timeout, decode the message and
* forwards the response to the onMessage function for further processing.
*
* @param {String} data Response from the server.
* @api private
*/
Transport.prototype.onData = function (data) {
this.clearCloseTimeout();
// If the connection in currently open (or in a reopening state) reset the close
// timeout since we have just received data. This check is necessary so
// that we don't reset the timeout on an explicitly disconnected connection.
if (this.socket.connected || this.socket.connecting || this.socket.reconnecting) {
this.setCloseTimeout();
}
if (data !== '') {
// todo: we should only do decodePayload for xhr transports
var msgs = io.parser.decodePayload(data);
if (msgs && msgs.length) {
for (var i = 0, l = msgs.length; i < l; i++) {
this.onPacket(msgs[i]);
}
}
}
return this;
};
/**
* Handles packets.
*
* @api private
*/
Transport.prototype.onPacket = function (packet) {
this.socket.setHeartbeatTimeout();
if (packet.type == 'heartbeat') {
return this.onHeartbeat();
}
if (packet.type == 'connect' && packet.endpoint == '') {
this.onConnect();
}
if (packet.type == 'error' && packet.advice == 'reconnect') {
this.isOpen = false;
}
this.socket.onPacket(packet);
return this;
};
/**
* Sets close timeout
*
* @api private
*/
Transport.prototype.setCloseTimeout = function () {
if (!this.closeTimeout) {
var self = this;
this.closeTimeout = setTimeout(function () {
self.onDisconnect();
}, this.socket.closeTimeout);
}
};
/**
* Called when transport disconnects.
*
* @api private
*/
Transport.prototype.onDisconnect = function () {
if (this.isOpen) this.close();
this.clearTimeouts();
this.socket.onDisconnect();
return this;
};
/**
* Called when transport connects
*
* @api private
*/
Transport.prototype.onConnect = function () {
this.socket.onConnect();
return this;
};
/**
* Clears close timeout
*
* @api private
*/
Transport.prototype.clearCloseTimeout = function () {
if (this.closeTimeout) {
clearTimeout(this.closeTimeout);
this.closeTimeout = null;
}
};
/**
* Clear timeouts
*
* @api private
*/
Transport.prototype.clearTimeouts = function () {
this.clearCloseTimeout();
if (this.reopenTimeout) {
clearTimeout(this.reopenTimeout);
}
};
/**
* Sends a packet
*
* @param {Object} packet object.
* @api private
*/
Transport.prototype.packet = function (packet) {
this.send(io.parser.encodePacket(packet));
};
/**
* Send the received heartbeat message back to server. So the server
* knows we are still connected.
*
* @param {String} heartbeat Heartbeat response from the server.
* @api private
*/
Transport.prototype.onHeartbeat = function (heartbeat) {
this.packet({ type: 'heartbeat' });
};
/**
* Called when the transport opens.
*
* @api private
*/
Transport.prototype.onOpen = function () {
this.isOpen = true;
this.clearCloseTimeout();
this.socket.onOpen();
};
/**
* Notifies the base when the connection with the Socket.IO server
* has been disconnected.
*
* @api private
*/
Transport.prototype.onClose = function () {
var self = this;
/* FIXME: reopen delay causing a infinit loop
this.reopenTimeout = setTimeout(function () {
self.open();
}, this.socket.options['reopen delay']);*/
this.isOpen = false;
this.socket.onClose();
this.onDisconnect();
};
/**
* Generates a connection url based on the Socket.IO URL Protocol.
* See <https://github.com/learnboost/socket.io-node/> for more details.
*
* @returns {String} Connection url
* @api private
*/
Transport.prototype.prepareUrl = function () {
var options = this.socket.options;
return this.scheme() + '://'
+ options.host + ':' + options.port + '/'
+ options.resource + '/' + io.protocol
+ '/' + this.name + '/' + this.sessid;
};
/**
* Checks if the transport is ready to start a connection.
*
* @param {Socket} socket The socket instance that needs a transport
* @param {Function} fn The callback
* @api private
*/
Transport.prototype.ready = function (socket, fn) {
fn.call(this);
};
})(
'undefined' != typeof io ? io : module.exports
, 'undefined' != typeof io ? io : module.parent.exports
);
|
