code: def receive(self):
          '''
          Return the message received.
  
          ..note::
              In ZMQ we are unable to get the address where we got the message from.
          '''
          try:
              msg = self.sub.recv()
          except zmq.Again as error:
              log.error('Unable to receive messages: %s', error, exc_info=True)
              raise ListenerException(error)
          log.debug('[%s] Received %s', time.time(), msg)
          return msg, 'f receive(self):
          '''
          Return the message received.
  
          ..note::
              In ZMQ we are unable to get the address where we got the message from.
          '''
          try:
              msg = self.sub.recv()
          except zmq.Again as error:
              log.error('Unable to receive messages: %s', error, exc_info=True)
              raise ListenerException(error)
          log.debug('[%s] Received %s', time.time(), msg)
          return msg, ''
docs: Return the message received.
  
          ..note::
              In ZMQ we are unable to get the address where we got the message from.