1591892 - Implement self.crossOriginIsolated

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, enhancement)

Description

[Anne (:annevk)]

In order to make it easier for developers to figure out if postMessage() will throw, we should expose that information through self.crossOriginIsolated, as defined by https://github.com/whatwg/html/pull/4734.

I'll work on adding some tests.

I think we should have this when COOP and COEP are enabled and it should only return true if dom.postMessage.sharedArrayBuffer.withCOOP_COEP is also enabled and the COOP and COEP headers are set appropriately.

Comment 1

[Yaron Tausky [:ytausky]]

Attachment: Bug 1591892 - Expose {window, self}.crossOriginIsolated

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/8a556d81b030
Expose {window, self}.crossOriginIsolated r=bzbarsky

Comment 3

[Stefan Hindli [:stefan_hindli]]

https://hg.mozilla.org/mozilla-central/rev/8a556d81b030

Comment 4

[Chris Mills [:cmills]]

I've documented this; see https://github.com/mdn/sprints/issues/2461#issuecomment-562748877 for the full details.