一个用VC++.net编写的聊天同步软件,有服务器端和客户端，实现了客户端和服务器端的时间同步，具体算法见程序

TCP的客户服务器通信程序 一：程序运行过程 1、运行服务器程序，等待客户端发出请求 2、运行客户端程序，输入客户的IP地址，请求连接 3、若连接成功，服务器端显示客户的IP地址及端口号；客户端接收文件并保存在d:clientls.txt下，否则，显示错误信息。 二：程序实现原理 发送端：打开文件，逐一读取字符到缓冲区（缓冲区大小为1024），若文件大于1024，则成块发送；若小于，则直接发送。 接受端：与发送端同理。-TCP client-server communication program one : running a process, running the server and wait for the client to issue two requests, the client operating procedures, the importation of customer IP address, link request, if successful connection, the server-client shows the IP address and port number ; the client receives the document and preserve d : client ls.txt, otherwise an error message. 2 : Principle procedures transmitter : open the file, read each character to the buffer (buffer size for 1024), and if the document is greater than 1,024, then sent into pieces; If less, then sent directly. Receivers : Send-the same reason.

c#,一个小型的flashget-c#, a small Flashget

http://www.cnblogs.com/files/halgogo/vb98.rar

用java写的一个端口扫描器源码 使用了swing和thread 学习网络安全的人值得一读-Using java to write a port scanner source thread using the swing and learning network security worth reading

eMule其实是一个开源项目，提供了优秀的p2p文件共享，这里提供了它的最新源代码。-quad is actually an open-source project, the quality of peer-to-peer file-sharing, where it provides the latest source code.

使用WebBrowser控件开发浏览器程序-use WebBrowser control procedures browser

非常简洁的网络流量统计,占用资源极小,启动快速.-A very simple network traffic statistics, a very small footprint, starts fast.

基于NT的Telnet客户端 　-NT-based Telnet client

Internet图片验证码系统-Internet Image Verification Code System

程序说明: 程序采用网上介绍的方法实现最基本的P2P方式通讯.模拟实现即时消息互发. 本程序只是实现简单的P2P互发消息.完成的比较粗糙,更多功能欢迎朋友们更新完善-procedure : online procedures introduced by the most basic method of peer-to-peer communication. Simulation made instant messaging each other. This procedure is a simple peer-to-peer updates. Completion of the rougher, more functional friends welcome update perfect