HTTP-三次握手 四次挥手

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2019-2-21-3

https://www.cnblogs.com/wxd0108/p/7687298.html

https://blog.csdn.net/codejas/article/details/80359628

http://www.cnblogs.com/QingFlye/p/4442529.html

https://blog.csdn.net/a19881029/article/details/38091243

https://www.cnblogs.com/163yun/p/9552368.html

https://blog.csdn.net/wangcheng2013/article/details/38944217