From bc465f33512c3606fff9eafca0a31b8719c62d82 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Laura=20Kl=C3=BCnder?= <laura@codingcatgirl.de>
Date: Tue, 24 Oct 2017 21:39:45 +0200
Subject: [PATCH] etags should be quoted

---
 src/c3nav/mapdata/views.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/c3nav/mapdata/views.py b/src/c3nav/mapdata/views.py
index d9a1b443..c1529442 100644
--- a/src/c3nav/mapdata/views.py
+++ b/src/c3nav/mapdata/views.py
@@ -47,9 +47,9 @@ def tile(request, level, zoom, x, y, format):
     update_cache_key = renderer.update_cache_key
 
     # check browser cache
-    etag = b64_encode(hashlib.sha256(
+    etag = '"'+b64_encode(hashlib.sha256(
         ('%d-%d-%d-%d:%s:%s' % (level, zoom, x, y, tile_cache_key, settings.SECRET_TILE_KEY)).encode()
-    ).digest())
+    ).digest())+'"'
     if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
     if if_none_match == etag:
         return HttpResponseNotModified()