用VC实现得在文件中查找网址链接得源代码，希望对大家有用！-Achieved with the VC was in the document to find URL links to get the source code, and we hope helpful!

VC编程判断指定IP或网址是否有效代码VC program to judge the validity of the specified source IP or URL-VC program to judge the validity of the specified source IP or URL