TCP和UDP的区别 http://www.cnblogs.com/bizhu/archive/2012/05/12/2497493.html
HTTPS 详解 http://honglu.me/2016/01/13/HTTPS详解/
Https协议详解 http://www.jianshu.com/p/30b8b40a671c
SSL/TLS协议运行机制的概述 http://www.ruanyifeng.com/blog/2014/02/ssl_tls.html
HTTPS 理论详解与实践 https://segmentfault.com/a/1190000004985253