1799166 - Early Hints: Parse additional header fields for referrer-policy

Status: RESOLVED FIXED

(Core :: Networking: HTTP, task, P2)

Description

[Andrew Creskey [:acreskey]]

When the server responds with a referrer-policy header, we should respect it and restrict the outgoing requests accordingly.
Currently only the referrerpolicy passed in the Link header directly is parsed (e.g. via Link: <style.css>; rel=preload; as=style; referrerpolicy=no-referrer).

Comment 1

[Andrew Creskey [:acreskey]]

Attachment: Bug 1799166 - Early Hints: Parse additional header fields for referrer-policy r=#necko-reviewers,ckerschb!,manuel!

The early hint may have two referrer policies, one from the response header and one from the link element.

The link header referrer priority, if present, will take precedence over the response referrer policy.

Comment 2

[Andrew Creskey [:acreskey]]

We have a web platform test that makes use of the referrer-policy in the server response here:
https://bugzilla.mozilla.org/show_bug.cgi?id=1758698

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/74ecf8abe97a
Early Hints: Parse additional header fields for referrer-policy r=ckerschb,manuel

Comment 4

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/74ecf8abe97a