import paho.mqtt.client as mqtt
import paho.mqtt.publish as publish

idx = 0
#往paho/temperature 一直发送内容
while True:
    print("send success")
    publish.single("paho/temperature",
               payload="this is message:%s"%idx,
               hostname="iot.eclipse.org",
               client_id="lora1",
               # qos = 0,
               # tls=tls,
               port=1883,
               protocol=mqtt.MQTTv311)
    idx += 1

import paho.mqtt.client as mqtt

# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, rc):
    print("Connected with result code "+str(rc))


# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg):
    #在这里处理业务逻辑
    print(msg.topic+" "+str(msg.payload))

client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message

client.connect("iot.eclipse.org", 1883, 60)
#订阅频道
client.subscribe("paho/temperature")

# Blocking call that processes network traffic, dispatches callbacks and
# handles reconnecting.
# Other loop*() functions are available that give a threaded interface and a
# manual interface.
client.loop_forever()