C#模拟QQ登陆，并获取qq好友列表

说明：  Socket是建立网络连接时使用的。在连接成功时，应用程序两端都会产生一个Socket实例，操作这个实例，完成所需的会话。(Socket is used when a network connection. The connection is successful, the application will have a Socket instance ends, the operation of this example, the completion of the required sessions.)

自适应卡尔曼滤波，附有卡尔曼滤波的程序实现(Adaptive Kalman filter in detail, the procedures for implementation with Kalman filtering,)

基于VC++的局域网聊天室，能够实现多人房间聊天。(LAN chat room based on VC++ can realize multi-room chat.)

代码使用异步方式同时向指定web路径发送多个http请求，以用于对web服务器进行压力测试。(a simple web server stress testing tool by sending large number of web requests)

华为NAT教程-本文主要讲解NAT的主要概念和NAT的几种主要应用，图文并茂，是篇很不错的技术 介绍文章。(Huawei NAT Tutorial- In this paper, to explain the main concepts of the NAT and NAT several major applications, pictures, articles very good technical Introductory essay.)

mail to server mail to server mail to server mail to server mail to server mail to server (mail to server mail to server mail to server mail to server mail to server )

说明：  Source wyd 7.55, contem alguns bugs em c++ , Source wyd 7.55, contem alguns bugs em c++

http通信包，提供上传和下载的处理接口(http communications package that provides the processing interface to upload and download)

这份源码可以让大家更清晰的知道编写网络通讯的技巧(This code can let everyone know more clearly written communication network techniques)

说明：  一个简单的DNS服务器，可以在嵌入式系统中使用。(A simple DNS server,it can be used in embedded system.)