> I was trying to use $ENV{'HTTP_REFERER'} in a certain script, and as I
> reloaded the script over and over I noticed that it would constantly
> be changing when the page was loaded directly (and therefore there
> should not have been any HTTP_REFERER at all).
In my setup at least, HTTP_REFERER is reset between requests. I
believe non-CGI environment variables will be passed through from the
parent process, and all CGI variables and anything else set by Apache
(i.e. starting with HTTP_) will be reset for each request.
I'm wondering if this is because I am using a custom handler, and not
the default Apache::Registry handler. Maybe Apache::Registry resets
%ENV?
When you write a handler, are you supposed to clear %ENV at the end of
each request? I noticed that if I put "undef %ENV" at the very end of
my handler, then things would behave as normal and I'd get a clean
environment on each request. The trouble is, I don't know if this has
any unintended side effects, so I took it out.
For now, I just changed the requests for $ENV{'VAR'} to instead call
subprocess_env('VAR'). Unfortunately, I don't know if this correct
either.
