http://blog.csdn.net/motian06/article/details/8203031
http://www.360doc.com/content/14/0824/21/12928831_404350326.shtml
https://zhidao.baidu.com/question/241681390496487764.html
node.js:
https://github.com/mcollina/mosca/wiki/MQTT-over-Websockets
lucy 2017-02-09