一个简单实用的网络TCP/IP测试程序源代码，不修改 即可完成普通测试，在此基础上修改后，即可得到特定的程序。...

本代码时对局域网中多播通信的实现，有加入多播组功能，退出多播组功能，多播显示发送接收消息等。-The code of LAN Multicast Communication, a multicast group by adding features from the multicast group function, multicast, etc. show the send receive messages.

获取客户端的操作系统，获取浏览器级版本等信息。-To obtain the client" s operating system, access to information such as browser-level version.

校园网中的计算机使用一块网卡就可以实现校园网与外网无缝切换-Campus network using a computer network card can be achieved outside the campus network with seamless network switching

功能很强的VB个人防火墙程序，网络上很少看到，是研究防火墙的好源码。-VB highly functional personal firewall program, rarely seen on the network, the firewall is to examine the source of the well.

一段小代码很容易获得本机IP地址和NAME-small section of code is easy access to the IP address and machine NAME

这是一个在windows平台下用vc6.0开发的一个“FTP遍历下载目录”程序，内有详细的注解-This is one of the windows platform with the development of a vc6.0 "FTP download directory traversal" process, with detailed footnotes

端口扫描源代码 可以改写成局域网的扫描器，对于需进行端口扫描的用户很有用处。- The port scanning source code may rewrite the local area network the scanner, regarding must carry on the user which the port scans to have the use very much.

一个CAsyncSocket扩展类的例子。 实现了从指定的服务器和端口获得TCP数据流。不过现在可能程序中指定的服务器已经关闭了，不过代码还是可以看看的。-An example of CAsyncSocket extended class implements the function to get TCP data stream from a dedicated server and port.Perhaps,the server using in code has been closed,but the code has some value to view.

RAS Wrapper based on C

采用了DOM实现了客户端和服务器端的通讯.-used to achieve the client and server communications.