MQTT 服务器和客户端的选型
MQTT 官网:
http://mqtt.org/
https://github.com/mqtt/mqtt.github.io/wiki/servers
https://github.com/mqtt/mqtt.github.io/wiki/libraries
https://github.com/mqtt/mqtt.github.io/wiki/tools
MQTT 服务器:
https://github.com/mqtt/mqtt.github.io/wiki/server-support
MQTT 客户端: