298374 HTTP Proxy Scanner

Needs to scan any given ip range for open proxies on port 80, 8080, 3128 & save the good working ones to a text file in the same directory on which the script runs. It doesnt need to interface with a mysql server or anything just a plain text file with the date on it is fine. This is just for scanning normal open public proxies, nothing fancy. But it needs to work Like proxy Hunter, search for "proxyhunter" on google & click the first link to see what proxy hunter is, its for windows, but i want this to be much faster & to run on linux.