一个服务器端，两个客户端：student和teacher两者权限不一，更能不一；能进行简单的选课、发送通知等功能...

基于UDP协议的socket编程，VC++实现，用于扫描同网段机器信息-Based on UDP protocol socket programming, VC++ Realize, for scanning the machine with the network segment information

一个目前计算机上可以制作的关于TCP/UDP/IP包协议状态统计信息的Fan案例，作为简单直观的演示IP助手函数的例子

MD5 (Message-Digest algorithm 5) is a widely used, partially insecure[1] cryptographic hash function with a 128-bit hash value. As an Internet standard (RFC 1321), MD5 has been employed in a wide variety of security applications, and is also commonly used to check the integrity of files. An MD5 hash is typically expressed as a 32 digit hexadecimal number.

Get the TXT from a HTML file.

一种方法检索 NPP Cookie 从 warrock 网站用于无客户端漫游或 Emulators.You 只需要监听来自客户端的数据包后你获得 NPP cookie，并将其发送回服务器。

socket编程的几篇和好的文章-socket programming and the few good articles

一个很好用的网络开发sdk，可以应用与文件上传下载！-A good web development using the sdk, can be applied with the file upload to download!

windows环境下的网络编程-windows environment of Network Programming

通过消息传递数据,有服务端和客户端-through messaging data, services and clients

基于Socket类实现SMTP，POP邮件服务器的源代码-based on Socket class achieve SMTP and POP mail server source code