Libxml2是个C语言的XML程式库，能简单方便的提供对XML文件的各种操作，并且支持XPATH查询，及部分的支持XSLT转换等功能。Libxml2的下载地址是http://xmlsoft.org/ 完全版的库是开源的，并且带有例子程式和说明文件。(Libxml2 is a XML Library of C language. It can provide various operations for XML files simply and conveniently, and support

通过http协议进行自动下载指定文件的工具，可通过此例程熟悉http协议。(A tool for automatically downloading the specified file through the HTTP protocol can be used to familiarity with the HTTP protocol.)

mongoose v6.15，多线程http——server，线程数可设。从GitHub下载C语言原代码，在vc6里面编译成c++工程(multi-threads http_server, based on source code from Github. The project is conducted in VC6, converted from c language. The threads num can be edited in code.)