connect method
      
void
connect()
      
     
    
    
Implementation
void connect() {
  if (_socket != null) {
    _socket!.connect();
    _socket!.onConnect((_) => print(WS_CONNECT));
    _socket!.onDisconnect((_) {
      _socket!.connect();
      print(WS_DISCONNECT);
    });
  }
}