socket: rename rooms to joined

Author: rauchg

lib/socket.js

@@ -54,11 +54,12 @@ var emit = Emitter.prototype.emit;
 
 function Socket(nsp, client){
   this.nsp = nsp;
+  this.server = nsp.server;
+  this.adapter = this.nsp.adapter;
   this.id = client.id;
   this.request = client.request;
   this.client = client;
-  this.flags = [];
-  this.rooms = [];
+  this.joined = [];
   this.acks = {};
   this.connected = true;
   this.disconnected = false;