说明：  这个是网络高手写的相当经典的一个端口映射程序的源代码文件，htran被好多黑客用来做内网端口映射。如果你想研究网络编程/黑客编程，这个是很宝贵的源代码！
(This is a considerable network of experts to write a classic port mapping procedure of source code files, htran was a lot of hackers used to do port mapping network. If you want to study network programming/hacking programming, this is a very valuable source code!)