Repository navigation
Expand file tree
/
Copy pathweb_socket.js
More file actions
377 lines (337 loc) · 12.3 KB
/
Copy pathweb_socket.js
File metadata and controls
377 lines (337 loc) · 12.3 KB
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
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
// Copyright: Hiroshi Ichikawa <http://gimite.net/en/>
// License: New BSD License
// Reference: http://dev.w3.org/html5/websockets/
// Reference: http://tools.ietf.org/html/draft-hixie-thewebsocketprotocol
(function() {
if (window.WebSocket) return;
var console = window.console;
if (!console || !console.log || !console.error) {
console = {log: function(){ }, error: function(){ }};
}
if (!swfobject.hasFlashPlayerVersion("10.0.0")) {
console.error("Flash Player >= 10.0.0 is required.");
return;
}
if (location.protocol == "file:") {
console.error(
"WARNING: web-socket-js doesn't work in file:///... URL " +
"unless you set Flash Security Settings properly. " +
"Open the page via Web server i.e. http://...");
}
WebSocket = function(url, protocol, proxyHost, proxyPort, headers) {
var self = this;
self.readyState = WebSocket.CONNECTING;
self.bufferedAmount = 0;
// Uses setTimeout() to make sure __createFlash() runs after the caller sets ws.onopen etc.
// Otherwise, when onopen fires immediately, onopen is called before it is set.
setTimeout(function() {
WebSocket.__addTask(function() {
self.__createFlash(url, protocol, proxyHost, proxyPort, headers);
});
}, 0);
};
WebSocket.prototype.__createFlash = function(url, protocol, proxyHost, proxyPort, headers) {
var self = this;
self.__flash =
WebSocket.__flash.create(url, protocol, proxyHost || null, proxyPort || 0, headers || null);
self.__flash.addEventListener("event", function(fe) {
// Uses setTimeout() to workaround the error:
// > You are trying to call recursively into the Flash Player which is not allowed.
setTimeout(function() { self.__handleEvents(); }, 0);
});
//console.log("[WebSocket] Flash object is ready");
};
WebSocket.prototype.send = function(data) {
if (!this.__flash || this.readyState == WebSocket.CONNECTING) {
throw "INVALID_STATE_ERR: Web Socket connection has not been established";
}
// We use encodeURIComponent() here, because FABridge doesn't work if
// the argument includes some characters. We don't use escape() here
// because of this:
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Guide/Functions#escape_and_unescape_Functions
// But it looks decodeURIComponent(encodeURIComponent(s)) doesn't
// preserve all Unicode characters either e.g. "\uffff" in Firefox.
var result = this.__flash.send(encodeURIComponent(data));
if (result < 0) { // success
return true;
} else {
this.bufferedAmount += result;
return false;
}
};
WebSocket.prototype.close = function() {
var self = this;
if (!self.__flash) return;
if (self.readyState == WebSocket.CLOSED || self.readyState == WebSocket.CLOSING) return;
self.__flash.close();
// Sets/calls them manually here because Flash WebSocketConnection.close cannot fire events
// which causes weird error:
// > You are trying to call recursively into the Flash Player which is not allowed.
self.readyState = WebSocket.CLOSED;
if (self.__timer) clearInterval(self.__timer);
if (self.onclose) {
// Make it asynchronous so that it looks more like an actual
// close event
setTimeout(self.onclose, 0);
}
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {string} type
* @param {function} listener
* @param {boolean} useCapture !NB Not implemented yet
* @return void
*/
WebSocket.prototype.addEventListener = function(type, listener, useCapture) {
if (!('__events' in this)) {
this.__events = {};
}
if (!(type in this.__events)) {
this.__events[type] = [];
if ('function' == typeof this['on' + type]) {
this.__events[type].defaultHandler = this['on' + type];
this['on' + type] = this.__createEventHandler(this, type);
}
}
this.__events[type].push(listener);
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {string} type
* @param {function} listener
* @param {boolean} useCapture NB! Not implemented yet
* @return void
*/
WebSocket.prototype.removeEventListener = function(type, listener, useCapture) {
if (!('__events' in this)) {
this.__events = {};
}
if (!(type in this.__events)) return;
for (var i = this.__events.length; i > -1; --i) {
if (listener === this.__events[type][i]) {
this.__events[type].splice(i, 1);
break;
}
}
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {WebSocketEvent} event
* @return void
*/
WebSocket.prototype.dispatchEvent = function(event) {
if (!('__events' in this)) throw 'UNSPECIFIED_EVENT_TYPE_ERR';
if (!(event.type in this.__events)) throw 'UNSPECIFIED_EVENT_TYPE_ERR';
for (var i = 0, l = this.__events[event.type].length; i < l; ++ i) {
this.__events[event.type][i](event);
if (event.cancelBubble) break;
}
if (false !== event.returnValue &&
'function' == typeof this.__events[event.type].defaultHandler)
{
this.__events[event.type].defaultHandler(event);
}
};
WebSocket.prototype.__handleEvents = function() {
// Gets events using receiveEvents() instead of getting it from event object
// of Flash event. This is to make sure to keep message order.
// It seems sometimes Flash events don't arrive in the same order as they are sent.
var events = this.__flash.receiveEvents();
for (var i = 0; i < events.length; i++) {
try {
var event = events[i];
if ("readyState" in event) {
this.readyState = event.readyState;
}
if (event.type == "open") {
if (this.__timer) clearInterval(this.__timer);
if (window.opera) {
// Workaround for weird behavior of Opera which sometimes drops events.
var self = this;
this.__timer = setInterval(function () {
self.__handleEvents();
}, 500);
}
if (this.onopen) this.onopen();
} else if (event.type == "close") {
if (this.__timer) clearInterval(this.__timer);
if (this.onclose) this.onclose();
} else if (event.type == "message") {
if (this.onmessage) {
var data = decodeURIComponent(event.data);
var e;
if (window.MessageEvent && !window.opera) {
e = document.createEvent("MessageEvent");
e.initMessageEvent("message", false, false, data, null, null, window, null);
} else {
// IE and Opera, the latter one truncates the data parameter after any 0x00 bytes.
e = {data: data};
}
this.onmessage(e);
}
} else if (event.type == "error") {
if (this.__timer) clearInterval(this.__timer);
if (this.onerror) this.onerror();
} else {
throw "unknown event type: " + event.type;
}
} catch (e) {
console.error(e.toString());
}
}
};
/**
* @param {object} object
* @param {string} type
*/
WebSocket.prototype.__createEventHandler = function(object, type) {
return function(data) {
var event = new WebSocketEvent();
event.initEvent(type, true, true);
event.target = event.currentTarget = object;
for (var key in data) {
event[key] = data[key];
}
object.dispatchEvent(event, arguments);
};
};
/**
* Basic implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-interface">DOM 2 EventInterface</a>}
*
* @class
* @constructor
*/
function WebSocketEvent(){}
/**
*
* @type boolean
*/
WebSocketEvent.prototype.cancelable = true;
/**
*
* @type boolean
*/
WebSocketEvent.prototype.cancelBubble = false;
/**
*
* @return void
*/
WebSocketEvent.prototype.preventDefault = function() {
if (this.cancelable) {
this.returnValue = false;
}
};
/**
*
* @return void
*/
WebSocketEvent.prototype.stopPropagation = function() {
this.cancelBubble = true;
};
/**
*
* @param {string} eventTypeArg
* @param {boolean} canBubbleArg
* @param {boolean} cancelableArg
* @return void
*/
WebSocketEvent.prototype.initEvent = function(eventTypeArg, canBubbleArg, cancelableArg) {
this.type = eventTypeArg;
this.cancelable = cancelableArg;
this.timeStamp = new Date();
};
WebSocket.CONNECTING = 0;
WebSocket.OPEN = 1;
WebSocket.CLOSING = 2;
WebSocket.CLOSED = 3;
WebSocket.__tasks = [];
WebSocket.loadFlashPolicyFile = function(url) {
WebSocket.__addTask(function() {
WebSocket.__flash.loadManualPolicyFile(url);
});
}
WebSocket.__initialize = function() {
if (WebSocket.__swfLocation) {
// For backword compatibility.
window.WEB_SOCKET_SWF_LOCATION = WebSocket.__swfLocation;
}
if (!window.WEB_SOCKET_SWF_LOCATION) {
console.error("[WebSocket] set WEB_SOCKET_SWF_LOCATION to location of WebSocketMain.swf");
return;
}
var container = document.createElement("div");
container.id = "webSocketContainer";
// Hides Flash box. We cannot use display: none or visibility: hidden because it prevents
// Flash from loading at least in IE. So we move it out of the screen at (-100, -100).
// But this even doesn't work with Flash Lite (e.g. in Droid Incredible). So with Flash
// Lite, we put it at (0, 0). This shows 1x1 box visible at left-top corner but this is
// the best we can do as far as we know now.
container.style.position = "absolute";
if (WebSocket.__isFlashLite()) {
container.style.left = "0px";
container.style.top = "0px";
} else {
container.style.left = "-100px";
container.style.top = "-100px";
}
var holder = document.createElement("div");
holder.id = "webSocketFlash";
container.appendChild(holder);
document.body.appendChild(container);
// See this article for hasPriority:
// http://help.adobe.com/en_US/as3/mobile/WS4bebcd66a74275c36cfb8137124318eebc6-7ffd.html
swfobject.embedSWF(
WEB_SOCKET_SWF_LOCATION, "webSocketFlash",
"1" /* width */, "1" /* height */, "9.0.0" /* SWF version */,
null, {bridgeName: "webSocket"}, {hasPriority: true, allowScriptAccess: "always"}, null,
function(e) {
if (!e.success) console.error("[WebSocket] swfobject.embedSWF failed");
}
);
FABridge.addInitializationCallback("webSocket", function() {
try {
//console.log("[WebSocket] FABridge initializad");
WebSocket.__flash = FABridge.webSocket.root();
WebSocket.__flash.setCallerUrl(location.href);
WebSocket.__flash.setDebug(!!window.WEB_SOCKET_DEBUG);
for (var i = 0; i < WebSocket.__tasks.length; ++i) {
WebSocket.__tasks[i]();
}
WebSocket.__tasks = [];
} catch (e) {
console.error("[WebSocket] " + e.toString());
}
});
};
WebSocket.__addTask = function(task) {
if (WebSocket.__flash) {
task();
} else {
WebSocket.__tasks.push(task);
}
};
WebSocket.__isFlashLite = function() {
if (!window.navigator || !window.navigator.mimeTypes) return false;
var mimeType = window.navigator.mimeTypes["application/x-shockwave-flash"];
if (!mimeType || !mimeType.enabledPlugin || !mimeType.enabledPlugin.filename) return false;
return mimeType.enabledPlugin.filename.match(/flashlite/i) ? true : false;
};
// called from Flash
window.webSocketLog = function(message) {
console.log(decodeURIComponent(message));
};
// called from Flash
window.webSocketError = function(message) {
console.error(decodeURIComponent(message));
};
if (!window.WEB_SOCKET_DISABLE_AUTO_INITIALIZATION) {
if (window.addEventListener) {
window.addEventListener("load", WebSocket.__initialize, false);
} else {
window.attachEvent("onload", WebSocket.__initialize);
}
}
})();