[squid-dev] [PATCH] Update all stored headers on revalidation

[Eduard Bagdasaryan]

Hello,

According to RFC 7234 section 4.3.4. when a proxy receives 304 (Not 
Modified)
response, it should update every header, except Warning headers (which need
special processing). Also RFC 7232 section 4.1. does not prohibit origin 
servers
from sending any headers in 304 responses. That means that Squid now 
should not
ignore headers, which earlier were considered as malicious/faulty.
These changes were originated from another project, which is going to make
collapsing for revalidation requests work.

Regards,
Eduard.
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