On Mon, Mar 21, 2022 at 11:12 AM Andrew Williams <awil...@chromium.org> wrote:
> 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. > Opening an about:blank window from the opaque origin window does so, right? I guess this means that unrelated BCs can't be same-origin. 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 > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAEa0%2BkXqY2it8g1XmVY4MwbK3o%3DMaKtfynPB2dXBA7dQxLSa6Q%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- 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/CACuR13dnzb0Fgr8q%3DsL3AMrGEr%2BhgjiMzXjYZovJ%2BoBmqfuaNQ%40mail.gmail.com.
