code: def send(self, message):
          
          if not message or not self.protocol or not self.protocol.transport:
              return
          if not self.can_log:
              _LOGGER.debug('Sending %s', message.strip())
          try:
              self.protocol.transport.write(message.encode())
          except OSError as exc:
              _LOGGER.error(
                  'Failed writing to transport %s: %s',
                  self.protocol.transport, exc)
              self.protocol.transport.close()
              self.protocol.conn_lost_callback()
docs: Write a message to the gateway.