这是一个VC6.0下编的422串口通信工具，具有报文分析，BCC校验处理，报文显示，报文接收后回复，定时发送等多种功能-This is a series of 422 under VC6.0 serial communication tool with the packet analysis, BCC check processing, message display, message, after receiving responses, from time to time to send a

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 de

TCP、UDP服务端和客户端的源程序，可以自己更改，定时发送报文等(TCP server and client source)