rip实验代码，rip是目前因特网上最简单的一种路由协议。本实验代码实现了对response、request报文的处理，以及路由表项超时删除、定时发送等函数。-experimental code rip, rip on the Internet is the easiest kind of routing protocol. The experiment code for response, request packets and routing table entries timeout delete, send and other timing functions.