客户端源码，UDP穿透技术，适合CSHARP编程，有助于程序员编程的速度

用udp编写的一个网络程序，输入对方的ip就可以进行通讯，只要改一下端口，一个程序同时又客户端与服务端，mfc的-Using udp written a network program, enter the other' s ip you can communicate, as long as change what port, a program at the same time client and server, mfc' s