the4th

tcp查看器，可以查看tcp协议的相关信息，还包括设置，等等，对学习tcp协议有很大帮助(tcp viewer, can view information about tcp protocol, but also include the provision, and so on, to learn tcp protocol has very helpful)

windows过滤驱动的示例代码，解析IP、TCP数据包，没有添加实际功能(Windows filter driver sample code, parsing IP, TCP data packets, did not add the actual function)

自实现提示窗口,可以实现与XP风格的提示窗口类库,基于MFC,()

it iz a free sms creator, you can send free sms

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)

用vc实现邮件传输功能，主要采用winsock实现传输过程。有利于熟悉网络编程。(achieved using vc mail functionality, mainly winsock achieve transfer process. Help familiar with network programming.)

说明：  Desktop drawing program, for beginners to understand the vc code is a good example, performance fun and easy to learn

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VB校园即时通聊天软件源代码,有需要的就下载吧。(VB Campus Messenger chat software source code, there is a need to download it.)

实现ARQ协议的简单模拟，包括发送，确认号，等待，出错重发等等。(Realise a simple Model as ARQ Protocol)