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raspberry pi mqtt client
Selfish Spider
on Feb 14, 2021
# test_connect.py
import paho.mqtt.client as mqtt
# The callback function. It will be triggered when trying to connect to the MQTT broker
# client is the client instance connected this time
# userdata is users' information, usually empty. If it is needed, you can set it through user_data_set function.
# flags save the dictionary of broker response flag.
# rc is the response code.
# Generally, we only need to pay attention to whether the response code is 0.
def on_connect(client, userdata, flags, rc):
if rc == 0:
print("Connected success")
else:
print(f"Connected fail with code {rc}")
client = mqtt.Client()
client.on_connect = on_connect
client.connect("broker.emqx.io", 1883, 60)
client.loop_forever()
Source: www.emqx.io
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