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MEDIUM: cache: Change caching conditions

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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.
This commit is contained in:
Remi Tricot-Le Breton
2020-11-12 11:14:41 +01:00
committed by William Lallemand
parent 91dc0c0d8f
commit cc9bf2e5fe
7 changed files with 196 additions and 8 deletions
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2
include/haproxy/http_ana-t.h
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@@ -59,7 +59,7 @@
/* cacheability management, bits values 0x1000 to 0x3000 (0-3 shift 12) */
#define TX_CACHEABLE 0x00001000 /* at least part of the response is cacheable */
#define TX_CACHE_COOK 0x00002000 /* a cookie in the response is cacheable */
#define TX_CACHE_IGNORE 0x00004000 /* do not retrieve object from cache */
#define TX_CACHE_IGNORE 0x00004000 /* do not retrieve object from cache, or avoid caching response */
#define TX_CACHE_SHIFT 12 /* bit shift */
#define TX_CON_WANT_TUN 0x00008000 /* Will be a tunnel (CONNECT or 101-Switching-Protocol) */