MQTT协议

MQTT协议理解

https://wenku.baidu.com/view/f103c085561252d381eb6edc.html (pdf格式文档)

https://www.cnblogs.com/zhangyu1024/p/6141818.html
https://blog.csdn.net/anxianfeng55555/article/details/80908795
https://blog.csdn.net/putiancaijunyu/article/details/78539552

https://mcxiaoke.gitbooks.io/mqtt-cn/content/mqtt/02-ControlPacketFormat.html

中移MQTT云平台
https://www.cnblogs.com/danpianjicainiao/p/11058351.html

第三方server
activemq
emqtt

证书
https://blog.csdn.net/g1531997389/article/details/80048313
https://wenku.baidu.com/view/26b882e8856a561252d36fa5.html

第三方库移植
1、mqtt客户端paho
https://blog.csdn.net/kh766200466/article/details/79694119

2、客户+服务Mosquitto
https://blog.csdn.net/dancer__sky/article/details/77855249