标签：
http://kb.cnblogs.com/page/513237/
http://blogs.technet.com/b/networking/archive/2009/08/12/where-do-resets-come-from-no-the-stork-does-not-bring-them.aspx
http://div.io/topic/609?page=1
http://fex.baidu.com/blog/2014/05/what-happen/
http://igoro.com/archive/what-really-happens-when-you-navigate-to-a-url/
TCP Connect
原文地址：http://my.oschina.net/feichexia/blog/517334
