Added missing Parser#error method

Restored previous sessionid generation mechanism temporarily

Author: rauchg

lib/socket.io/client.js

@@ -190,7 +190,7 @@ Client.prototype._queue = function(type, data){
 };
 
 Client.prototype._generateSessionId = function(){
-  this.sessionId = ++this.listener._clientCount; // REFACTORME
+  this.sessionId = Math.random().toString().substr(2); // REFACTORME
   return this;
 };
 

lib/socket.io/transports/websocket.js

@@ -21,6 +21,7 @@ WebSocket.prototype._onConnect = function(req, socket){
 
   this.parser = new Parser();
   this.parser.on('data', self._onData.bind(this));
+  this.parser.on('error', self._onClose.bind(this));
 
   Client.prototype._onConnect.call(this, req);
 
@@ -154,3 +155,10 @@ Parser.prototype.parse = function(){
     }
   }
 };
+
+Parser.prototype.error = function(reason){
+  this.buffer = '';
+  this.i = 0;
+  this.emit('error', reason);
+  return this;
+};