mqtt python
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))
# Subscribing in on_connect() means that if we lose the connection and
# reconnect then subscriptions will be renewed.
client.subscribe("house/#")
# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg):
print(str(msg.topic) + " " + str(msg.payload.decode("utf-8")))
client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message
client.connect("your.host", 1883, 60)
# 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.
# With loop_start you have to write the while loop yourself but the programma will continue
client.loop_forever() # loop_forever acts as a while True loop (the program will not continue past here).
# how to publish
your_data = "data"
client.publish("your/pub/topic", your_data)