This is a simple proxy tool that checks for the HTTP CONNECT method and grabs verbose output from a webserver. It is primarily useful when verifying false positives from automated vulnerability assessment tools.
You can download it from the following link: https://packetstormsecurity.com/files/download/61864/proxycheck.pl.txt
Source: https://packetstormsecurity.com/files/61864/proxycheck.pl.txt.html