Add WSGIRequest subclass for HTTPS env var support

wsgi/app.py

@@ -17,13 +17,25 @@
     else:
         newrelic = False
 
+IS_HTTPS = os.environ.get('HTTPS', '').strip() == 'on'
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'bedrock.settings')
 
 # must be imported after env var is set above.
+from django.core.handlers.wsgi import WSGIRequest
 from django.core.wsgi import get_wsgi_application
 from raven.contrib.django.raven_compat.middleware.wsgi import Sentry
 
+
+class WSGIHTTPSRequest(WSGIRequest):
+    def _get_scheme(self):
+        if IS_HTTPS:
+            return 'https'
+
+        return super(WSGIHTTPSRequest, self)._get_scheme()
+
+
 application = get_wsgi_application()
+application.request_class = WSGIHTTPSRequest
 application = Sentry(application)
 
 if newrelic: