Using url parameter for communicating the need for base64 instead of upgrade packet for WebSocket

lib/socket.js

@@ -247,9 +247,7 @@ Socket.prototype.probe = function (name) {
           transport.removeListener('error', onerror);
           self.emit('upgrade', transport);
           self.setTransport(transport);
-          var upgradePacket = { type: 'upgrade' };
-          if (!transport.supportsBinary) { upgradePacket.data = 'b64' };
-          transport.send([upgradePacket]);
+          transport.send([{ type: 'upgrade' }]);
           transport = null;
           self.upgrading = false;
           self.flush();

lib/transports/websocket.js

@@ -198,6 +198,9 @@ WS.prototype.uri = function(){
     query[this.timestampParam] = +new Date;
   }
 
+  // communicate binary support capabilities
+  if (!this.supportsBinary) { query.b64 = 1; }
+
   query = util.qs(query);
 
   // prepend ? to query