ETag value does not meet HTTP spec

[skjohn@…]

The HTTP spec says that ETag values should be quoted either as "etag" or W/"etag". The current implementation (in modules django.middleware.common and django.utils.cache) do not quote these.

The code would therefore change as follows:

etag = md5.new(response.content).hexdigest()

etag = '"%s"' % md5.new(response.content).hexdigest()

[Simon Greenhill]

Patch implementing skjohn's suggestion

[Adrian Holovaty]

(In [7659]) Fixed #7228 -- Fixed our ETag header creation to meet the HTTP spec, by quoting it. Thanks, skjohn@…