一个比较简单的Sniffer源码，适合入门之用 想学网络编程的同志可以看看，用vc编的，好象用的是socket，原始套接字编程 程序主要是把网络上的包拦截下来-Sniffer a relatively simple source code, suitable for use in entry-want to learn network programming comrades can see, using vc series, as if using a socket, raw socket