Run message thread.

def run(self):
        """Run message thread."""
        while not self.stopped:
            try:
                # grab a message from queue
                message = self.gc100_client.queue.get(True, 5)
            except queue.Empty:
                _LOGGER.debug("message thread: no messages")
                continue

            _LOGGER.debug("message thread: " + str(message))

            # parse message
            split_message = str(message).split(',')
            if len(split_message) != 3:
                _LOGGER.error("can't parse server response")
                continue
            event, module_address, value = str(message).split(',')
            value = int(value)

            # make a copy of the current subscribers to keep this thread-safe
            current_subscribers = dict(self.gc100_client.subscribers)

            # send message to subscribers
            for subscriber_id in current_subscribers:
                # msg or op should match what we asked for
                subscriber = current_subscribers[subscriber_id]

                if event + "," + module_address == subscriber['event']:
                    subscriber['callback'](value)
                    if subscriber['permanent'] is False:
                        self.gc100_client.unsubscribe(subscriber_id)

            # signals to queue job is done
            self.gc100_client.queue.task_done()