tree c531165c319a4c866db4a790fcaa5b2787ae3928
parent 64b6f367882acf8b82c634e19fb5e3d0e64d11ef
author Tim Duesterhus <tim@bastelstu.be> 1609242233 +0100
committer Willy Tarreau <w@1wt.eu> 1609403948 +0100
encoding latin1

BUG/MEDIUM: cache: Fix hash collision in `accept-encoding` handling for `Vary`

This patch fixes GitHub Issue #988. Commit ce9e7b25217c46db1ac636b2c885a05bf91ae57e
was not sufficient, because it fell back to a hash comparison if the bitmap
of known encodings was not acceptable instead of directly returning the the
cached response is not compatible.

This patch also extends the reg-test to test the hash collision that was
mentioned in #988.

Vary handling is 2.4, no backport needed.