UDP穿透NAT的P2P穿透NAT的研究是一个很好的例子

用Delphi编写Socket网络通讯程序-with Delphi Socket network communications procedures

1. 目录get mac是获取机器网卡地址程序；2. 目录GetIpAddress是根据机器名以及域名获取IP地址程序；3. 目录getlocalip是获取本地机器ip地址程序；4. 目录ping是ping程序代码；5. 目录portscanner是本地机器端口扫描程序，其中扫描可能端口就是扫描计算机上所有可能的端口；6. 目录超级链接是在窗体上实现超级链接到IE和自动发送邮件的程序；-1. Contents get mac is access card machines addresses procedures; 2. Contents GetIpAddress under machine name and IP address of the domain name acquisition procedures; 3. Contents getlocalip is access to local machine ip address; 4. Contents of ping ping code; 5. Contents portscanner local port scanning machines procedures, which may port scanning is scanning your computer all possible port; 6. Contents hyperlinks in Form achieving super link to the IE and automatic mail procedures;

数据库作业，我自己写的 很管用的东西 ，大家来下载吧-operation of the database, I wrote it myself very useful things, we downloaded it to Gateway

一个获取网卡地址.ip地址.网卡信息的小程序~~!呵呵 挺不错的~!-A perfect short program to get information(i.e. IP, Machine Address) of network cards.

这是一个简单的端口扫描程序 注：要在cmd中找到exe的绝对路径 然后按照格式 才能有运行。-This is a simple port scanner Note: To find the exe in cmd and then follow the format of the absolute path in order to have to run.

c#编写的p2p聊天室，自己编写的可以用，上c#课程设计时可以用的基本模板，挺好的。。

程序说明: 1.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. 2.P2P通讯说明: 1).网关类型是在理想状态下.即非对称型NAT. 2).同在一个内网的两个CLIENT端通讯时,如果网关NAT不支持环回,将会失败. 文件目录说明: tQServer:程序服务端,请将其放在公网上运行. tQClient:程序客户端,可以在不同的内网中运行登录连接到服务端. Common:公共协议文件夹 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-procedures : 1. Online procedures introduced by the most basic method of peer-to-peer communication. Simulation made instant messaging each other. 2.P2P communications Note : 1). Gateway is the ideal type of state. That is non-symmetric NAT. 2). In the same period net CLIENT-2 communications, if not support NAT Gateway Circular, will fail. directory : tQServer :-service procedures, I would be grateful if the public on its Internet. tQClient : clients, in different operations within the network login to connect to the server. Common : Public the agreement folder procedure is a simple peer-to-peer updates. completion of the rougher, more functional friends welcome update perfect

一个整理好的JAVA短信收发程序。带文档以及一些搜集到的资料。方便大家学习-collate a good Java SMS transceiver procedures. With documentation, and some of the data collected. To facilitate learning

一款可以媲美EtherDetect Packet Sniffer的抓包工具，帮你分析TCP/UDP网络协议。 主要特色： １。线索式分组显示 ２。多包重组-A EtherDetect Packet Sniffer can be comparable to the capture tools help you analyze TCP/UDP network protocol. Main features: 1. Trail-style grouping display 2. The reorganization of multi-packet

网络五子棋系统，用vc实现.学习vc对话框编程，网络编程。-331 network system, using vc achieve. Learning vc dialog programming, network programming.