[Webkit-unassigned] [Bug 233854] New: <link rel=preload> reuses response regardless of CORS attributes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=233854

            Bug ID: 233854
           Summary: <link rel=preload> reuses response regardless of CORS
                    attributes
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Page Loading
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: noam at webkit.org
                CC: beidson at apple.com

See new failing WPT: https://wpt.fyi/results/preload/preload-resource-match.https.html
and relevant spec: https://html.spec.whatwg.org/#consume-a-preloaded-resource

Preloaded responses should be reused/discarded based on their "as" and CORS-related attributes.
>From the test, it seems like in WebKit, some resources are reused regardless of mismatching CORS attributes, and some are ignored even though all their attributes match.

This bug report is submitted as part of an effort to make the preload future more interoperable across browsers.

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