def publish(topic, payload, retained=False, port=1883, host="localhost"):
publish = MQTTSN.Publishes()
publish.Flags.QoS = 3
publish.Flags.Retain = retained
if isinstance(payload, str):
pass
elif isinstance(payload, bytes):
payload = payload.decode()
if isinstance(topic, str):
if len(topic) > 2:
publish.Flags.TopicIdType = MQTTSN.TOPIC_NORMAL
publish.TopicId = len(topic)
payload = topic + payload
else:
publish.Flags.TopicIdType = MQTTSN.TOPIC_SHORTNAME
publish.TopicName = topic
else:
publish.Flags.TopicIdType = MQTTSN.TOPIC_NORMAL
publish.TopicId = topic
publish.MsgId = 0
#print("payload", payload)
publish.Data = payload
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(publish.pack(), (host, port))
sock.close()
return
def publish(self, topic, payload, qos=0, retained=False):
if isinstance(payload, str) or isinstance(payload, bytes):
pass
else:
raise TypeError('Payload must be str or bytes.')
publish = MQTTSN.Publishes()
publish.Flags.QoS = qos
publish.Flags.Retain = retained
if isinstance(topic, str):
publish.Flags.TopicIdType = MQTTSN.TOPIC_SHORTNAME
publish.TopicName = topic
else:
publish.Flags.TopicIdType = MQTTSN.TOPIC_NORMAL
publish.TopicId = topic
if qos in [-1, 0]:
publish.MsgId = 0
else:
publish.MsgId = self.__nextMsgid()
#print("MsgId", publish.MsgId)
self.__receiver.outMsgs[publish.MsgId] = publish
publish.Data = payload
self.sock.send(publish.pack())
return publish.MsgId