email发送页面，精选ios学习编程源码，很好的参考资料。-Email sends the page, select the IOS learning programming source code, a good reference.

即时通讯的功能实现,服务器的搭建，实现 了本地局域网内的发送消息。登录和注册界面的实现，通过通知，协议来传值-The realization of the function of the instant communication, the construction of the server, realize the local sends a message in a network. Login and registration interface implementation, by n