iOS Socket重构设计 对GCDAsyncSocket再次封装
http://www.jianshu.com/p/2fc7ec5d0258
iOS 基于GCDAsyncSocket快速开发Socket通信
http://www.jianshu.com/p/8ad92f31dbfb
iOS之Socket编程最全总结 里面有服务器和客户端连接的demo
http://www.jianshu.com/p/781c7a359429
深入浅出－iOS的TCP/IP协议族剖析&&Socket 带demo
http://www.jianshu.com/p/cc756016243b
深入浅出－网络七层模型&&网络数据包
http://www.jianshu.com/p/4b9d43c0571a
iOS Socket编程-C语言版（UDP）
http://blog.csdn.net/woaifen3344/article/details/50196977
iOS Socket编程-C语言版（TCP）http://blog.csdn.net/woaifen3344/article/details/50196983
iOS Socket理论知识http://blog.csdn.net/woaifen3344/article/details/50196967
iOS IM开发准备工作（四）CocoaAsyncSocket的使用
http://www.cnblogs.com/akforsure/p/5235559.html
iOS IM开发准备工作（三）乱说Socket
http://www.cnblogs.com/akforsure/p/5195985.html
iOS学习之Socket使用简明教程－ AsyncSocket
https://my.oschina.net/joanfen/blog/287238
socket服务器的搭建-Mac
http://blog.csdn.net/Alpaca12/article/details/51126881
全栈必备：网络编程基础
http://blog.jobbole.com/110041/?repeat=w3tc
