c language socket based network programming code and practice

介绍最新的nat穿越技术ice，不用管nat类型的nat穿越技术-nat on the latest technology through ice, need not care nat types of technology across nat

Build client software that uses gethostbyname to look up machine names and print all information returned.

this is a good one for linux network protocol

omnetpp-3.3 source useful for network simulation under linux platform

这是一个unix环境下实现基于身份的PKI系统源码，由stanford大学开发。采用了椭圆曲线密码公钥系统和配对椭圆曲线计算(Tate Pairing)，具有非常高的效率.-This is a Unix-based environment PKI identity of the source system, developed by Stanford University. Use of Elliptic Curve Cryptosystem matching public key systems and elliptic curve calculation (Tate Pairing), with a very high efficiency.

在linux下基于UDP通讯的程序,包括客户端与服务端.-In linux based on UDP communication procedures, including client and server.

tcp 连接工具，只建立三次握手！-tcp connection tools, only the establishment of three-way handshake!

局域网路由器转发规则的重写，如何通过ARP获得MAC地址，然后发给局域网内用户，模拟环境为linux，可以用于虚拟机-LAN router to forward rewriting rules, how to get MAC addresses through ARP, and then sent to the LAN users, simulation environment for linux, can be used for the virtual machine

socket编程，具有详细的编程步骤，读者不用太多的查询帮助手册就可以看到-socket programming, the programming with detailed steps, readers do not have too many inquiries on the help manual can see

在LINUX下实现HA的源代码，应用比较广泛-under the HA Linux source code, the most widely used