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Code Issues 25 Releases Wiki Activity

Fixed #19705 -- Set proper headers on conditional Not Modified responses.

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Kevin Christopher Henry 2016-10-11 00:08:37 -04:00 committed by Tim Graham
parent b2f9db1637
commit bd7237d7ec
2 changed files with 36 additions and 7 deletions
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21
django/utils/cache.py
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@ -122,14 +122,21 @@ def _precondition_failed(request):
def _not_modified(request, response=None): def _not_modified(request, response=None):
new_response = HttpResponseNotModified()
if response: if response:
# We need to keep the cookies, see ticket #4994. # Preserve the headers required by Section 4.1 of RFC 7232, as well as
cookies = response.cookies # Last-Modified.
response = HttpResponseNotModified() for header in ('Cache-Control', 'Content-Location', 'Date', 'ETag', 'Expires', 'Last-Modified', 'Vary'):
response.cookies = cookies if header in response:
return response new_response[header] = response[header]
else:
return HttpResponseNotModified() # Preserve cookies as per the cookie specification: "If a proxy server
# receives a response which contains a Set-cookie header, it should
# propagate the Set-cookie header to the client, regardless of whether
# the response was 304 (Not Modified) or 200 (OK).
# https://curl.haxx.se/rfc/cookie_spec.html
new_response.cookies = response.cookies
return new_response
def get_conditional_response(request, etag=None, last_modified=None, response=None): def get_conditional_response(request, etag=None, last_modified=None, response=None):

22
tests/middleware/tests.py
View File

@ -614,6 +614,28 @@ class ConditionalGetMiddlewareTest(SimpleTestCase):
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp) self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
self.assertEqual(self.resp.status_code, 400) self.assertEqual(self.resp.status_code, 400)
def test_not_modified_headers(self):
"""
The 304 Not Modified response should include only the headers required
by section 4.1 of RFC 7232, Last-Modified, and the cookies.
"""
self.req.META['HTTP_IF_NONE_MATCH'] = self.resp['ETag'] = '"spam"'
self.resp['Date'] = 'Sat, 12 Feb 2011 17:35:44 GMT'
self.resp['Last-Modified'] = 'Sat, 12 Feb 2011 17:35:44 GMT'
self.resp['Expires'] = 'Sun, 13 Feb 2011 17:35:44 GMT'
self.resp['Vary'] = 'Cookie'
self.resp['Cache-Control'] = 'public'
self.resp['Content-Location'] = '/alt'
self.resp['Content-Language'] = 'en' # shouldn't be preserved
self.resp.set_cookie('key', 'value')
new_response = ConditionalGetMiddleware().process_response(self.req, self.resp)
self.assertEqual(new_response.status_code, 304)
for header in ('Cache-Control', 'Content-Location', 'Date', 'ETag', 'Expires', 'Last-Modified', 'Vary'):
self.assertEqual(new_response[header], self.resp[header])
self.assertEqual(new_response.cookies, self.resp.cookies)
self.assertNotIn('Content-Language', new_response)
class XFrameOptionsMiddlewareTest(SimpleTestCase): class XFrameOptionsMiddlewareTest(SimpleTestCase):
""" """