* Added the $https_if_not_empty variable with a fallback.

fastcgi_params

@@ -23,3 +23,5 @@ fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
 
 ## PHP only, required if PHP was built with --enable-force-cgi-redirect
 fastcgi_param  REDIRECT_STATUS    200;
+## HTTPS 'on' parameter.
+fastcgi_param  HTTPS              $https_if_not_empty;

map_https_fcgi.conf

@@ -0,0 +1,7 @@
+# -*- mode: conf; mode: flyspell-prog;  ispell-local-dictionary: "american" -*-
+### Implement the $https_if_not_empty variable for Nginx versions below 1.1.11.
+
+map $scheme $https_if_not_empty {
+    default '';
+    https on;
+}

nginx.conf

@@ -121,6 +121,14 @@ http {
     ## upstream.
     #include upstream_phpcgi_unix.conf;
 
+    ## ## If using Nginx version >= 1.1.11 then there's a $https variable
+    ## that has the value 'on' if the used scheme is https and '' if not.
+    ## See: http://trac.nginx.org/nginx/changeset/4380/nginx
+    ## http://trac.nginx.org/nginx/changeset/4333/nginx and
+    ## http://trac.nginx.org/nginx/changeset/4334/nginx. If using a
+    ## previous version then uncomment out the line below.
+    #include map_https_fcgi.conf;
+
     ## Include the upstream servers for Apache handling the PHP
     ## processes. In this case Nginx functions as a reverse proxy.
     #include reverse_proxy.conf;