$https with SSL proxy

[mscheel]

Your right, setting it for fastcgi as param works fine. I had a problem
in the past setting variables in the fastcgi_params, they've just been
ignored. This seems to be gone.
Then i have to rewrite the nginx internal logic of my
substitions/mappings based on this variable.

I still think allowing a manual override of this variable should be
allowed. If any other plugin relies on this header users with SSL
Accelerators will definately have a problem.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,224756,224761#msg-224761