MapXtreme2004的许可，这个东西对于搞的地理信息的人，可是很有用的吧...

基于GNU的VoIP SIP协议（RFC3261）实现代码-The GNU oSIP library is an implementation of SIP- rfc3261.

Unix/Linux NAPT协议解析源码-Unix/Linux NAPT agreement to resolve source

这是一个用于歌词下载、上传、匹配的源代码，有兴趣的可以好好的研究一下。-lyrics for download, upload, matching the source code, interested properly studied.

unix/linux组播多播通信相关知识包括api详细介绍以及实例, 建议收藏, 取之于网, 用之于网, 与你分享!-unix/linux Multicast multicast communications including api relevant knowledge and detailed examples, the proposed collection, taken from the network and use network, to share with you!

一个从网络上自动下载文件的自由工具，支持HTTP和FTP协议，可以使用HTTP代理.-One from the network to automatically download files free tools, to support the HTTP and FTP protocol, you can use the HTTP proxy.

一个经典的socket套接字的程序!分为server和client两个部分! 利用CSocket发送消息!!值得新手学习socket的使用!-a classic socket socket procedures! Server and client divided into two parts! Use CSocket messaging! ! Newcomers should learn to use the socket!

这是一个linux下监控vpn状态的程序，可以实时监控vpn隧道当前状态信息，包括（协商密钥，传输数据统计等）-This is a linux VPN under state control procedures, Real-time monitoring can VPN tunnel current state of information, including (key consultations, the data transmission, etc.)

一个网络蜘蛛的经典代码,可与运行java环紧,与平台无关-a network of the classic Spider code can be run in Central java tight, with the platform-independent

数据链路层协议的实现，重点是p5(退回到N重传)和p6（选择性重传）-data link layer protocol implemented, with a focus on p5 (back to the heavy-N) and p6 (selective Retransmission)

基于LINUX的SINFFER检测程序，通过判断处于混杂模式的网卡。-LINUX-based SINFFER detection procedures to determine the network card in promiscuous mode.