Has anyone had experiences where mod_headers directives often fail to have any effect? - It is unable to modify headers, only create & modify newly added headers.
Within my .htaccess file I carried out the following simple tests. 1) Header always set MyCustomHeader myCustomValue -- this works fine Header always set MyCustomHeader2 unsetMe Header always unset MycustomHeader2 -- works as expected - the header is not in the response 2) Header always set Cache-Control max-age=33 -- this works ONLY if apache doesnt normally include a Cach-Control header of its own accord. 3) Header always set Cache-Control max-age=33 Header always unset Cache-Control -- as with 2), this works ONLY if apache hasnt already added such a header It seems that mod_headers cannot operate on *existing* headers! - Only on headers generated by itself! I have searched through various bug lists, archives, documentation etc.. but to no avail. NB, I have used the 'always' condition keyword to ensure all header tables are used. Without this keyword, the tet results are the same. Environment: Linux, Fedora Core 5 httpd 2.2.2 Regards, Neil Simons
