皓哥的TCP讲解，备份一下

http://coolshell.cn/articles/11564.html

http://coolshell.cn/articles/11609.html

如何学好C语言

http://coolshell.cn/articles/4102.html

http://www.flickr.com/groups/structuresynth/

编程技术教程http://coolshell.cn/articles/240.html