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Learn Tai Chi Maker - mqtt (III) connect to mqtt server

2022-06-25 17:14:00 【xuechanba】

Video link ：https://www.bilibili.com/video/BV1eA411j771/?spm_id_from=autoNext&vd_source=b91967c499b23106586d7aa35af46413

The data link ：http://www.taichi-maker.com/homepage/esp8266-nodemcu-iot/iot-tuttorial/mqtt-tutorial/4-mqtt-server-connection/

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1、CONNECT message

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heartbeat ,KeepAlive It is used by the server to know whether the client is connected to it in real time .

2、CONNACK message

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https://yzsam.com/2022/176/202206251643435658.html

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