commit cc9bf2e5fe1fe6f15de9e78b6aaea2cd6be5ca4f
author Remi Tricot-Le Breton <rlebreton@haproxy.com> Thu Nov 12 11:14:41 2020 +0100
committer William Lallemand <wlallemand@haproxy.org> Thu Nov 12 11:22:05 2020 +0100
tree aa91c7e0433dbcd2a57c08007d90e1894c90648c
parent 91dc0c0d8fdc2fb091b49699ebb323d01aa1d9f6

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.

reg-tests/cache/sample_fetches.vtc

diff --git a/reg-tests/cache/sample_fetches.vtc b/reg-tests/cache/sample_fetches.vtc
index 1ba0690..73e6e1b 100644
--- a/reg-tests/cache/sample_fetches.vtc
+++ b/reg-tests/cache/sample_fetches.vtc
@@ -7,7 +7,8 @@
 
 server s1 {
        rxreq
-       txresp -nolen -hdr "Transfer-Encoding: chunked"
+       txresp -nolen -hdr "Transfer-Encoding: chunked" \
+            -hdr "Cache-Control: max-age=5"
        chunkedlen 15
        chunkedlen 15
        chunkedlen 15
@@ -16,7 +17,8 @@
 
 server s2 {
        rxreq
-       txresp -nolen -hdr "Transfer-Encoding: chunked"
+       txresp -nolen -hdr "Transfer-Encoding: chunked" \
+            -hdr "Cache-Control: max-age=5"
        chunkedlen 16
        chunkedlen 16
        chunkedlen 16
@@ -25,14 +27,16 @@
 
 server s3 {
        rxreq
-       txresp -nolen -hdr "Transfer-Encoding: chunked"
+       txresp -nolen -hdr "Transfer-Encoding: chunked" \
+            -hdr "Cache-Control: max-age=5"
        chunkedlen 17
        chunkedlen 17
        chunkedlen 17
        chunkedlen 0
 
        rxreq
-       txresp -nolen -hdr "Transfer-Encoding: chunked"
+       txresp -nolen -hdr "Transfer-Encoding: chunked" \
+            -hdr "Cache-Control: max-age=5"
        chunkedlen 17
        chunkedlen 17
        chunkedlen 17