curl是利用URL语法在命令行方式下工作的开源文件传输工具。它被广泛应用在Unix、多种Linux发行版中，并且有DOS和Win32、Win64下的移植版本。 -curl is a command line tool for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, R

该源码主要功能是通过http代理隧道连接实现远程连接，非常方便用户使用，是非常不错的学习工具!-The main source function is through http proxy tunneling for remote connections, very user-friendly, it is a very good learning tool!