code: def send_message_to(address, message=EMPTY, wait_for_reply_s=config.FOREVER):
      
      _logger.info("Sending message %s to %s", message, address)
      if isinstance(address, list):
          raise core.InvalidAddressError("Multiple addresses are not allowed")
      return sockets._sockets.send_message_to(address, message, wait_for_reply_s)
docs: Send a message and return the reply
      
      :param address: a nw0 address (eg from `nw0.discover`)
      :param message: any simple Python object, including text & tuples
      :param wait_for_reply_s: how many seconds to wait for a reply [default: forever]
      
      :returns: the reply returned from the address or None if out of time