Using mod rewrite to alter headers

[Zolthan]

I'm trying to use mod_rewrite to give different headers to different IP ranges. At the moment I'm having to maintain 2 copies of the same data with different htaccess files and I want to combine the info.

The htaccess file starts of nice and easy:
RewriteEngine On
RewriteCond %{REMOTE_ADDR} ^[IP Address here]$

But I can't figure out how to get the additional headers to work. I need these two lines in the htaccess file for the specific address:
Header unset Cache-control:
Header append Cache-control: "no-transform"

Is there a way I can use rewrite to call a 2nd htaccess type file or add in those specific lines. Or am I going about this all the wrong way?

Thanks.

[phranque]

welcome to WebmasterWorld [webmasterworld.com], Zolthan!

"Header" is not a mod_rewrite directive.
you need to have mod_headers [httpd.apache.org] installed for the "Header" directive to work.

[Zolthan]

Thanks for the answer - I though that would be the case - but thought I'd ask anyway. I guess you can't call in a 2nd htaccess file using mod_rewrite either.

I'll keep working on it.

[jdMorgan]

This may not be the best way to do this, but it works:

Use a RewriteCond to test the IP address, and internally rewrite the request to a second copy of the file if it is requested by that IP address.

Then put your Header set directive inside a <FilesMatch> container to change the cache-control header when the second copy of the file is requested.

Jim