Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 6235f1672706204ca4172bae3bf98be8893bb299
https://github.com/WebKit/WebKit/commit/6235f1672706204ca4172bae3bf98be8893bb299
Author: Charlie Wolfe <[email protected]>
Date: 2026-06-18 (Thu, 18 Jun 2026)
Changed paths:
M
LayoutTests/imported/w3c/web-platform-tests/fetch/http-cache/304-update.any-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/fetch/http-cache/304-update.any.serviceworker-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/fetch/http-cache/304-update.any.sharedworker-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/fetch/http-cache/304-update.any.worker-expected.txt
M Source/WebCore/platform/network/CacheValidation.cpp
Log Message:
-----------
Update arbitrary Content-* headers from 304 responses
https://bugs.webkit.org/show_bug.cgi?id=317250
rdar://179864251
Reviewed by Chris Dumez.
RFC 9111 §4.3.4 requires caches to update stored response headers from a 304
using the rules in
RFC 9111 §3.2:
https://www.rfc-editor.org/rfc/rfc9111.html#section-4.3.4
https://www.rfc-editor.org/rfc/rfc9111.html#section-3.2
Section 3.2 lists specific exceptions, but explicitly says the Content-* prefix
is not a signal that
a field is omitted from update. RFC 9110 §15.4.5 also defines 304 as a
header-only metadata response:
https://www.rfc-editor.org/rfc/rfc9110.html#section-15.4.5
Stop ignoring all Content-* headers after revalidation. Preserve only the
specific
representation/body-related fields WebCore needs to keep consistent with the
stored body, so
arbitrary extension headers such as Content-Test-Header update normally.
*
LayoutTests/imported/w3c/web-platform-tests/fetch/http-cache/304-update.any-expected.txt:
*
LayoutTests/imported/w3c/web-platform-tests/fetch/http-cache/304-update.any.serviceworker-expected.txt:
*
LayoutTests/imported/w3c/web-platform-tests/fetch/http-cache/304-update.any.sharedworker-expected.txt:
*
LayoutTests/imported/w3c/web-platform-tests/fetch/http-cache/304-update.any.worker-expected.txt:
* Source/WebCore/platform/network/CacheValidation.cpp:
Canonical link: https://commits.webkit.org/315449@main
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