Add XForwardedForMiddleware middleware

occupywallst/middleware.py

@@ -21,3 +21,18 @@ class NeverCache(object):
     def process_response(self, request, response):
         add_never_cache_headers(response)
         return response
+
+
+class XForwardedForMiddleware(object):
+    """Replace ``REMOTE_ADDR`` with ``HTTP_X_FORWARDED_FOR``
+
+    When reverse proxying from nginx, we receive a tcp connection from
+    localhost which isn't the client's real ip address.  Normally
+    reverse proxies are configured to set the ``X-Forwarded-For``
+    header which gives us the actual client ip.
+    """
+
+    def process_request(self, request):
+        if 'HTTP_X_FORWARDED_FOR' in request.META:
+            request.META['REMOTE_ADDR'] = request.META['HTTP_X_FORWARDED_FOR']
+            request.META['REMOTE_HOST'] = None

occupywallst/settings.py

@@ -105,6 +105,7 @@
 ]
 
 MIDDLEWARE_CLASSES = [
+    'occupywallst.middleware.XForwardedForMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.middleware.transaction.TransactionMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',