h3c校园客户端的手写版，适合学习网络编程，能实现手工上线下线，主要在linux上使用，如果配合枚举，可以将源码改成让上线的人下线-the campus handwritten version of the client h3c, for learning network programming, can be achieved by hand on a line off the assembly line in linux with the enumeration, the source changed to allow on-line people offline