非常不错的，功能庞大，详细内容自己看吧。

windows下的聊天程序用vc编写 小试身手，多多指教-windows under the chat program used to prepare small-scale test skill vc exhibitions

利用ICMP报文格式，兼容IPV4和IPV6下的Ping程序，在SP6下无需调试，即可编译，VS2005下也可-The use of ICMP message format, compatible with IPV4 and IPV6 under the Ping program, under the SP6 without debugging, you can compile, VS2005, may also

客户机/服务器模型是为了解决通信中的聚合问题。如果不采用客户机/服务器模型很难实现正常的通信，只有在一方作为服务器采用被动方式，始终等待对方与其通信；另一方作为客户机采用主动通信的方式，主动发起通信过程，才能最终完成通信。-client/server model is to solve the communication problems polymerization. If we do not use the client/server model is very difficult to achieve normal communications, as one of only a passive server, which has been waiting for communication with the other side; The other client as an active communication, initiate the communication process can be finalized communications.

网络通讯中的加密技术SSL，本文档可以做初学教程-SSL from network data transfor ,this document for net program

使用Http在线自动升级程序，类似瑞星的自动升级功能。-use automatic escalation procedures, similar Rising automatic update feature.

基于C S模式的简单应用程序的实现，程序的开发因为服务器从事大量的复杂的计算，所以服务器端的应用程序是 在Windows环境下用VC来实现的，VC作为面向对象的编程语言具有运算速度快的显著特点-C S Mode simple application implementation, because of the development server heavily engaged in the complex, So server applications in the Windows environment to achieve VC, VC as object-oriented programming language with the speed calculation of notable feature

vb.net开发的聊天程序-vb.net development of the chat program

这是一个简单的网络聊天的程序,能实现基本交互的功能-This is a simple network chat program, to achieve the basic functions of interactive

简单的UDP隧道的实现源代码，即UDP转发-simple UDP tunnel to achieve source code, that is, UDP transponders

一个在局域网中枚举各主机信息的源码,用于想进行网络自动发现的朋友参考.-a LAN enumerated in the mainframe information source for the network to automatically detect the reference to a friend.