For downloading a small program, used in learning

建立VPN连接的程序，可以修改本机路由，使用VPN过程中也可以上网。

用VC++编写的基于windows sockets编程的聊天应用程序，分为客户端和服务端两个文件-With VC++ Prepared based on the chat windows sockets programming applications, and services into the client-side two documents

学学client/sever程序-learn client/sever procedures

VB拦截数据包，在XP下可以直接运行。 VB拦截数据包，在XP下可以直接运行。-VB intercept packets in XP can be run directly. VB intercept packets in XP can be run directly.

在Internet上的聊天室程序一般都是以服务器提供服务端连接响应，使用者通过客户端程序登录到服务器，就可以与登录在同一服务器上的用户交谈，这是一个面向连接的通信过程。因此，程序要在TCP/IP环境下，实现服务器端和客户端两部分程序。-In Internet chat rooms on the procedure is generally based on the server side connection in response to the provision of services, the user through the client program to log on to the server, you can log in the same server with the user to chat, this is a connection-oriented communication process. Therefore, procedures to TCP/IP environment, the realization of server-side and client procedures in two parts.

基于局域网的TCP多用户通信，文件传输程序为Hi

局域网查询工具的源代码 是学习多线程编程。Windows API Helper wincap 编程的好例子，大家一定不要错过了!-Local area network query tool is to learn the source code for multi-threaded programming. Windows API Helper wincap a good example of programming, we must not miss!

一个简单的网络防火墙，从freevbcode上找的-A simple network firewall, from freevbcode find the

FTP服务器，学习写FTP服务器会有帮助-FTP server, FTP server will have to learn to help

这是我在EVC下的SOCKET代码，并含有多播代码，感谢网络，我把原本VC下的移植到EVC下的，里面有些地方是需要注意的，请看代码-EVC in the socket code, and includes multicast code for network, I originally under the VC transplanted to the EVC, there is some need to pay attention, take a look at code