用codeblocks做网络实践作业的时候，参考一下博客
https://www.cnblogs.com/kan0n/p/4479158.html
http://blog.csdn.net/u012291157/article/details/46391189
http://blog.csdn.net/chuck_0430/article/details/11181221
深入理解webserver的原理
2、路由追踪
http://blog.csdn.net/longlongxy/article/details/13775887
http://blog.csdn.net/cloud_castle/article/details/20657843
http://blog.csdn.net/u013271921/article/details/45488173
3、Email客户端
https://github.com/gabaynati/SMTP-client/tree/master/ex3-SMTP