CGIDEV2 and environment variable - HTTP_REFERER.

["John Rusling" <jrusling@xxxxxxxxxxxxxxxxxxx>]

If I understand correctly, this environment variable should contain
the previous browser link/url that the browser was on when they
typed in the link that got them to here.

Ie; if a user was at anyurl.com, and the user types in 
http://my400.com/pgm1.pgm then the variable returned from
CGIDEV2's HTTP_REFERER from pgm1 should contain 'anyurl.com'.

Is this correct?

And, if this is correct, why is HTTP_REFERER always blank for me?
(I've tried on our development and production as/400's. (iSeries)
and this is always blank.)

I haven't been able to find out much about this in my searches.

What I'd like to do is, if a request comes in to pgm1.pgm and that
browser/user isn't logged in, I'd like to pop the login.pgm, make them
login, and once they are logged in, direct them to where they were
heading. Ie; pgm1.pgm.  I'd like to do this program-atically in my rpg.

My hope was that saving HTTP_REFERER would allow me to do this.

Fyi - both login.pgm & pgm1.pgm are in rpg.

Any help or direction is appreciated.

John B.