1 files changed, 9 insertions, 0 deletions
diff --git a/main/utils.py b/main/utils.py
index cdd4ff71..8394e5cd 100644
--- a/main/utils.py
+++ b/main/utils.py
@@ -8,6 +8,7 @@ import hashlib
 
 from django.core.cache import cache
 from django.db import connections, router
+from django.http import HttpResponse
 from django.utils.timezone import now
 from django.template.defaultfilters import slugify
 
@@ -55,6 +56,14 @@ def clear_cache_function(func, args, kwargs):
     cache.delete(key)
 
 
+def empty_response():
+    empty = HttpResponse('')
+    # designating response as 'streaming' forces ConditionalGetMiddleware to
+    # not add a 'Content-Length: 0' header
+    empty.streaming = True
+    return empty
+
+
 def format_http_headers(request):
     headers = sorted((k, v) for k, v in request.META.items()
             if k.startswith('HTTP_'))