def client_try_publish(self, topic, msg, retained, qos):
        retval = False
        with self.client_lock:
            if self.wlan.isconnected() and self.client_ready:
                try:
                    self.client.publish(topic, msg, retained, qos)
                    retval = True
                except Exception as e:
                    sys.print_exception(e)
                    try:
                        self.client.disconnect()
                    except Exception as e:
                        self.client.sock.close()
        return retval