in reply to Serve a file from a CGI script

See Serving Static Content using Plack

The search terms you're looking for are anti-hotlink and anti-leech

Its not something you want to do from CGI , its better to use mod_rewrite or mod_hotlink or something :)

Also of interest are Throttling your web server (Oct 00) and How can I use a CGI script to return an image?

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Re^2: Serve a file from a CGI script
by willymacoy (Acolyte) on Feb 14, 2012 at 21:06 UTC

    That was a good start - thanks. I found what I was looking for

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In Section Seekers of Perl Wisdom