数据库作业，我自己写的 很管用的东西 ，大家来下载吧

实现双服务器的心跳探测，支持udp和串口。 快平台的tcp，udp类。-Dual server heartbeat detection, and support for serial udp. Express platform tcp, udp category.

p-持续CSMA协议下，一个用户在发送之前，先侦听信道，若是空闲，就以概率p发送出去，而以q =1-p的概率推迟到下一帧时。如果下一帧时仍是空闲，便再次以概率p发送而以q推迟到再下一帧时。直到发送成功或另外一用户开始发送时为止。若一开始就侦听到信道忙，它就等到下一帧时，然后再开始上述过程。若发生冲突，这等待一随机时间后重新开始。本实验中取q值为0.5。求的是0.5-持续CSMA。 -p-persistent CSMA agreement, a user before sending the first interception channel, if idle, with probability p sent, and to q = 1-p probability postponed to the next frames. If the next frame was still idle, they again sent with probability p and q to further postponed to the next frames. Until this a success or other users at the beginning of this date. If an interception at the start of the busy channel, it will wait till the next frames, and then begin the process. If conflict breaks out, waiting for a random period of time after the re-start. The experiments take q value of 0.5. For the 0.5-sustained CSMA.

MD5 (Message-Digest algorithm 5) is a widely used, partially insecure[1] cryptographic hash function with a 128-bit hash value. As an Internet standard (RFC 1321), MD5 has been employed in a wide variety of security applications, and is also commonly used to check the integrity of files. An MD5 hash is typically expressed as a 32 digit hexadecimal number.

一个监听udp的程序，可以把5260端口发过来的数据都显示出来-A udp listener program which can display all the data come from port 5260

一个简单的网络聊天服务器，在线聊天

vc实现通过的域名查找程序-vc achieve the domain name search procedures

华中科技大学普通房源VC规避程序，可以有完善的地方，修改findCfg也可以添加其他房源。都两年多了，改了机舱系统改了，但核心没变。可以编译VS2003或更高版本。

鼎鼎大名的局域网聊天、文件传输工具！ WINSOCK学习的经典代码！-famous LAN chat, file transfer tool! WINSOCK classic study code!

一个非常不错的网络通讯程序，是用VC＋＋6.0编写的，非常非常的好用，对想学网络编程的朋友非常有帮助-A very good network communication procedures, is to use VC 6.0 prepared, very, very easy to use, and want to learn network programming friends very helpful

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