一、MQTT协议概念MQTT（Message Queuing Telemetry Transport，消息队列遥测传输协议），它是一个极其轻量级的发布/订阅消息传输协议，轻量级指的是较少的代码和带宽。因为在物联网行业有类似充电桩、娃娃机、遥控飞行器等等这样的设备，它们的网络可能存在不稳定的情况并且只...

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