is it possible to have in .htaccess (Apache 2.2) a url condition that, when encountered, executes the RequestHeader directive? Something like:
.htaccess
if ( %{HTTP_HOST} == "example.com" ){ RequestHeader unset Set-Cookie }
To do this, you can use the directive mod_setenvif :
mod_setenvif
SetEnvIf Host ^(www\.)?example\.com$ NO_COOKIE RequestHeader unset Set-Cookie env=NO_COOKIE