MEDIUM: cache: Change caching conditions
Do not cache responses that do not have an explicit expiration time
(s-maxage or max-age Cache-Control directives or Expires header) or a
validator (ETag or Last-Modified headers) anymore, as suggested in
RFC 7234#3.
The TX_FLAG_IGNORE flag is used instead of the TX_FLAG_CACHEABLE so as
not to change the behavior of the checkcache option.
(cherry picked from commit cc9bf2e5fe1fe6f15de9e78b6aaea2cd6be5ca4f)
Signed-off-by: William Lallemand <wlallemand@haproxy.org>
diff --git a/src/cache.c b/src/cache.c
index f86c96f..4f8fad9 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -664,7 +664,7 @@
http_check_response_for_cacheability(s, &s->res);
- if (!(txn->flags & TX_CACHEABLE) || !(txn->flags & TX_CACHE_COOK))
+ if (!(txn->flags & TX_CACHEABLE) || !(txn->flags & TX_CACHE_COOK) || (txn->flags & TX_CACHE_IGNORE))
goto out;
age = 0;