code: @Override
    public int portRemote()
    {
      if (_channel != null) {
        try {
          SocketAddress addr = _channel.getRemoteAddress();
          
          return 0;
        } catch (Exception e) {
          e.printStackTrace();
          return 0;
        }
      }
      else
        return 0;
    }
docs: Returns the remote client's port.