Thanks for taking a look, Yoav. I believe your understanding aligns with mine - BroadcastChannel instances in an opaque origin context can only exchange messages with other instances tied to that same opaque origin, and there's no way to create the same opaque origin in another browsing context.
Related to this, I added a WPT that tests that BroadcastChannel instances in different opaque origins (in the same document) can't exchange messages [6], and it currently passes in Firefox [7]. In Safari, it currently fails, but I've opened a WebKit bug report [8] for this. -Andrew [6] https://chromium-review.googlesource.com/c/chromium/src/+/3460249 [7] https://wpt.fyi/results/webmessaging/broadcastchannel/opaque-origin.html?label=master&label=experimental&aligned [8] https://bugs.webkit.org/show_bug.cgi?id=238090 On Mon, Mar 21, 2022 at 4:07 AM MROKU <thesi...@gmail.com> wrote: > THX > > piątek, 18 marca 2022 o 20:32:01 UTC+1 awi...@chromium.org napisał(a): > >> Hi blink-dev@, >> >> As implemented in Chrome today, attempting to create a BroadcastChannel >> instance in an opaque origin context will result in an exception being >> thrown. We plan to ship a minor change that will allow BroadcastChannel >> instances to be created and used in these contexts, which will align Chrome >> with the HTML standard [1] and with Firefox / Safari. We don’t expect any >> breakage as a result of this change, and there is existing web platform >> test coverage [2] [3] to ensure that BroadcastChannel works as expected in >> opaque origin contexts. A CL implementing the change [4] has been reviewed >> and is ready to land, so we expect this to ship with M102. This effort is >> tracked by crbug 670024 [5]. >> >> Let me know if you have any questions. Thank you! >> >> -Andrew >> >> [1] >> https://html.spec.whatwg.org/multipage/web-messaging.html#broadcasting-to-other-browsing-contexts >> >> >> [2] >> https://github.com/web-platform-tests/wpt/blob/master/webmessaging/broadcastchannel/sandbox.html >> >> [3] >> https://github.com/web-platform-tests/wpt/blob/master/webmessaging/broadcastchannel/opaque-origin.html >> >> [4] https://chromium-review.googlesource.com/c/chromium/src/+/3520021 >> [5] https://bugs.chromium.org/p/chromium/issues/detail?id=670024 >> > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAEa0%2BkXqY2it8g1XmVY4MwbK3o%3DMaKtfynPB2dXBA7dQxLSa6Q%40mail.gmail.com.
