this.conn = new WebSocket(url + "/?sid=" + sid + "&page=index");
this.conn.addEventListener('message', socketMessageListener);
this.conn.addEventListener('close', socketCloseListener);
this.conn = new WebSocket(url + "/?sid=" + sid + "&page=index");
this.conn.addEventListener('message', socketMessageListener);
this.conn.addEventListener('close', socketCloseListener);