udp

黑客编程精粹，可以学到很多使用的东西啊，里面包含好几个文件(Hacker programming the essence of things you can learn a lot using the ah, which contains several files)

说明：  vc++实现的简单的cs架构程序，服务器端分登录和注册服务器，通信服务器，及客户端三部分程序。(vc++ server and client c/s lan chatroom)

VB开发的IP测试程序，这是在我工作中写的调试程序，在配置文件中只需要写上相应的IP，程序就会循环测试IP地址是否在线，不在线的话就会报警提醒(VB development of IP test program, which is written in my work debugger, just write in the configuration file on the corresponding IP, the program will loop test IP address is online, not online, then it will alarm to remind)

There is no souse code. Just trash

快递发送单查询通信，　利用了socket(Courier to send single query communication using a socket)

网络聊天室，实现类似QQ的功能，通过链表对客户管理(sockeg programming)

网络安全评估系统,根据评估目标和评估内容的要求构建的一组反映网络安全水平的相关指标，据以搜集评估对象的有关信息资料，反映评估对象的网络安全的基本面貌、素质和水平。(Network security assessment system)

UDT网络传输协议开源包，是基于UDP的可靠传输协议，支持P2P，有现成的文件传输函数，速度比TCP快。(Open source packages of the UDT network transport protocol is UDP-based reliable transport protocol to support P2P, there is a ready-made file transfer function, the speed is faster than TCP.)

说明：  网络拓扑图生成工具，可以很轻松的生成整个网络的拓扑图(Network topology generation tool that can easily generate the whole network topology)

本书主要面向具有一定VC网络编程基础并希望学习较高层次编程技术的读者(The book has some major VC-oriented network programming base and hopes to learn higher-level programming technology readers)