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https://github.com/socketio/socket.io.git
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100 lines
2.6 KiB
JavaScript
100 lines
2.6 KiB
JavaScript
/**
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* Socket.IO client
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*
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* @author Guillermo Rauch <guillermo@rosepad.com>
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* @license The MIT license.
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* @copyright Copyright (c) 2009 RosePad <dev@rosepad.com>
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*/
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(function(){
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var json = io.util.JSON;
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io.Socket = ioClass({
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include: [io.util.Events, io.util.Options],
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options: {
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secure: false,
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document: document,
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port: document.location.port || 80,
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resource: 'socket.io',
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transports: ['websocket', 'server-events', 'flashsocket', 'htmlfile', 'xhr-multipart', 'xhr-polling'],
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transportOptions: {},
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rememberTransport: true
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},
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init: function(host, options){
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this.host = host || document.domain;
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this.setOptions(options);
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this.connected = false;
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this.connecting = false;
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this.transport = this.getTransport();
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if (!this.transport && 'console' in window) console.error('No transport available');
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},
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getTransport: function(){
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var transports = this.options.transports, match;
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if (this.options.rememberTransport){
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match = this.options.document.cookie.match('(?:^|;)\\s*socket\.io=([^;]*)');
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if (match) transports = [decodeURIComponent(match[1])];
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}
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for (var i = 0; transport = transports[i]; i++){
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if (io.Transport[transport] && io.Transport[transport].check()){
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return new io.Transport[transport](this, this.options.transportOptions[transport] || {});
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}
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}
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return null;
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},
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connect: function(){
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if (this.transport && !this.connected && !this.connecting){
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this.connecting = true;
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this.transport.connect();
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}
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return this;
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},
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send: function(data){
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if (!this.transport || !this.transport.connected) return this._queue(data);
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this.transport.send(json.encode([data]));
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return this;
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},
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disconnect: function(){
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this.transport.disconnect();
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return this;
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},
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_queue: function(message){
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if (!('_queueStack' in this)) this._queueStack = [];
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this._queueStack.push(message);
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return this;
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},
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_doQueue: function(){
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if (!('_queueStack' in this) || !this._queueStack.length) return this;
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this.transport.send(json.encode([].concat(this._queueStack)));
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this._queueStack = [];
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return this;
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},
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_onConnect: function(){
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this.connected = true;
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this.connecting = false;
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this._doQueue();
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if (this.options.rememberTransport) this.options.document.cookie = 'socket.io=' + encodeURIComponent(this.transport.type);
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this.fireEvent('connect');
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},
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_onMessage: function(data){
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this.fireEvent('message', data);
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},
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_onDisconnect: function(){
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this.fireEvent('disconnect');
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}
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});
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})(); |