def send_request(self, msg):
        """Send a request messsage.

        Parameters
        ----------
        msg : Message object
            The request Message to send.

        """
        assert(msg.mtype == Message.REQUEST)
        if msg.mid and not self._server_supports_ids:
            raise KatcpVersionError('Message IDs not supported by server')
        self.send_message(msg)