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实现通用的程序升级功能，可以检查是否有更新，下载更新(Achieve universal upgrade feature, you can check for updates, download updates)

说明：  ARP协议发现局域网内的活动主机，vc++语言编写，用有界面，美观实用(ARP protocol found in the activities of the LAN hosts, vc++ language, with a interface, beautiful and practical)

get your host net setting

利用UDP协议实现两台计算机点对点之间的数据传输和聊天功能(Using UDP protocol between two computers peer-to-peer data transfer and chat features)

用vc实现的sniffer，没有使用winsock与winpcap。十分具有学习价值！(Vc realize with the sniffer, did not use winsock with winpcap. Very much with learning the value of!)

MFC类下的winsock多线程实现文件传输，在vc++6.0下通过调试。(MFC category under the winsock multithreading document transmission, the 6.0 vc through debugging.)

异步套接字编写的网络聊天室程序，根据孙鑫VC++深入详解的例子改写，使用Visual studio 2008 SP1在Unicode编码环境下编写，可以收发中文字符。(Asynchronous socket program written in Internet chat rooms, according to Sun Xin VC++ depth Detailed examples rewritten using Visual studio 2008 SP1 environment written in Unicode encoding, you can send and receive Chinese characters.)

用socket编程实现点对点通信，TCP客户端程序，TCP服务器程序，以及UDP点对点聊天通信。(Point to point communication, TCP client, TCP server, and UDP peer chat communication socket programming.)

一个可以观察本机上网过程的小程序,使用了SHDocVw组件和MSHTML组件,()

MFC实现文件传输，望有志者增加多线程的功能(MFC to achieve file transfer, and hopes to increase multi-threading features people with lofty ideals)