io.Socket = Class({

  include: [io.util.Events, io.util.Options],

  options: {
    secure: false,
		document: document,
    resource: 'socket.io',
    transports: ['websocket', 'server-events', 'flashsocket', 'htmlfile', 'xhr-multipart', 'xhr-polling'],
    transportOptions: {},
		rememberTransport: true
  },

  init: function(host, options){
    this.host = host;
    this.setOptions(options);
    this.connected = false;
    this.connecting = false;
    this.transport = this.getTransport();
    if (!this.transport && 'console' in window) console.error('No transport available');
  },

  getTransport: function(){
		var transports = this.options.transports, match;
		if (this.options.rememberTransport){
			match = this.options.document.cookie.match('(?:^|;)\\s*socket\.io=([^;]*)');
			if (match) transports = [decodeURIComponent(match[1])];
		} 
    for (var i = 0; transport = transports[i]; i++){
      if (io.Transport[transport] && io.Transport[transport].check()){
        return new io.Transport[transport](this, this.options.transportOptions[transport] || {});
      }
    }
    return null;
  },

  connect: function(){
    if (this.transport && !this.connected && !this.connecting){
      this.connecting = true;
      this.transport.connect();
    }      
    return this;
  },

  send: function(data){
    if (!this.transport || !this.transport.connected) return this._queue(data);
    this.transport.send(JSON.stringify([data]));   
    return this;
  },
  
  disconnect: function(){
    this.transport.disconnect();
    return this;
  },
  
  _queue: function(message){
    if (!('_queueStack' in this)) this._queueStack = [];
    this._queueStack.push(message);
    return this;
  },

  _doQueue: function(){    
    if (!('_queueStack' in this) || !this._queueStack.length) return this;
		this.transport.send(JSON.stringify([].concat(this._queueStack)));
		this._queueStack = [];
		return this;
  },
  
  _onConnect: function(){
    this.connected = true;
    this.connecting = false;
    this._doQueue();
		if (this.options.rememberTransport) this.options.document.cookie = 'socket.io=' + encodeURIComponent(this.transport.type);
    this.fireEvent('connect');
  },
  
  _onMessage: function(data){
    this.fireEvent('message', data);
  },

  _onDisconnect: function(){
    this.fireEvent('disconnect');
  }

});