tree 4a5b0284ad1d5e3be7aa3c07ac8b71936f06caeb
parent 27091b4dd0612ca420d894342f58ba4087b41350
author Remi Tricot-Le Breton <rlebreton@haproxy.com> 1603443088 +0200
committer William Lallemand <wlallemand@haproxy.org> 1603818625 +0100

MINOR: cache: Process the If-Modified-Since header in conditional requests

If a client sends a conditional request containing an If-Modified-Since
header (and no If-None-Match header), we try to compare the date with
the one stored in the cache entry (coming either from a Last-Modified
head, or a Date header, or corresponding to the first response's
reception time). If the request's date is earlier than the stored one,
we send a "304 Not Modified" response back. Otherwise, the stored is sent
(through a 200 OK response).

This resolves GitHub issue #821.