Setting HTTPS on

[Robert Leftwich]

I'm changing a nginx/fastcgi setup to use the proxy module but have hit
a small problem. The framework behind the proxy needs the environment
variable HTTPS set to on if the the original request was https. This was
possible in the fastcgi setup using "fastcgi_param  HTTPS on;", but I
cannot find an equivalent in the proxy section (proxy_set_header appends
HTTP_ to the param name). Is there an equivalent to fastcgi_param in the
proxy module?

Robert