def connect_and_subscribe():
global client_id, mqtt_server, topic_sub
client = MQTTClient(client_id, mqtt_server)
client.set_last_will(topic='hack42/tele/loungeledjes/status',
msg='offline',
retain=True)
client.connect()
client.publish('hack42/tele/loungeledjes/ifconfig',
str(sta_if.ifconfig()),
retain=True)
client.publish('hack42/tele/loungeledjes/status', 'online', retain=True)
return client
def mqtt_connect():
# mqtt初始化
print("mqtt_broker:%s" % config['mqtt_broker'])
client = MQTTClient(client_id=config['mqtt_client_id'],
server=config['mqtt_broker'],
port=config['mqtt_port'],
user=config['mqtt_user'],
password=config['mqtt_pwd'],
keepalive=120)
# 设置mqtt订阅回调
client.set_callback(mqtt_callback)
# 设置遗言
# 向主题/{dev_id}/devstate ，发送{"dev_id":2,"dev_state":"offline"}
last_will = json.dumps({"dev_id": DEVICE_ID, "dev_state": 'off'})
client.set_last_will(DEVICE_ID + '/devstate', last_will)
return client