Get the request protocol from express request.

Author: graingert

lib/ngoverrides.js

@@ -170,9 +170,7 @@ function registerModule(context) {
                     ),
                     protocol: ifRequest(
                         function () {
-                            // TODO: Make this be 'https' when the
-                            // request is SSL?
-                            return 'http';
+                            return request.protocol || 'http';
                         }
                     ),
                     search: parsedUrl(