It fetches lists of proxy from Internet and check/validate them.

LinkChecker 是一个网页链接检查程序，主要特性： • 循环遍历和多线程检查 • 输出各种格式检查结果：text, HTML, SQL, CSV, XML • 支持 HTTP/1.1, HTTPS, FTP, mailto:, news:, nntp:, Telnet 和本地文件链接检查 • 可使用正则表达式对链接的url进行过滤 • 支持代理服务器 • 支持用户名和密码验证 ̶

it just a very litle code. Use for know the pure of public IP. this code just use winsock Local IP. Yea, you can track your ip just use service like ipchicken.com or whatismyip.com or other free ip check online service. But, i use ISP that use their