Since http and https are handled by different virtual-hosts on apache (due to the fact, that they listen to different ports (normaly 80 for http and 443 for https)), you have to issue a redirect to the client to accomplish this. Of course the client must be able to understand http/1.x 30x status responses and the Location header.

A common solution is to let apache do the redirecting via mod_rewrite for certain urls.

# the ssl host
<VirtualHost aaa.bbb.ccc.ddd:443>
    [...]# ServerName etc.

    RewriteEngine on
    RewriteRule ^/cgi-bin/prog.pl(\?.*)$ http://my.server/cgi-bin/prog
+.pl$1
</VirtualHost>
[download]

If you want to do the redirecting from the cgi and are using CGI.pm, read up on CGI::redirect()

Edit:fixed the redirect-target protocol.

regards,
tomte

Hlade's Law:

If you have a difficult task, give it to a lazy person --
they will find an easier way to do it.