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Re: [mediacapture-handle] Don't reinvent postMessage (#11)

From: Elad Alon via GitHub <sysbot+gh@w3.org>
Date: Tue, 15 Mar 2022 09:31:25 +0000
To: public-webrtc-logs@w3.org
Message-ID: <issue_comment.created-1067753801-1647336683-sysbot+gh@w3.org>
> Not cross-tab, but cross-origin. The [opening paragraph](https://html.spec.whatwg.org/multipage/web-messaging.html#broadcasting-to-other-browsing-contexts) on BroadcastChannel: _"Pages on a single [origin](https://html.spec.whatwg.org/multipage/origin.html#concept-origin) opened by the same user in the same user agent but in different unrelated [browsing contexts](https://html.spec.whatwg.org/multipage/browsers.html#browsing-context) sometimes need to send notifications to each other"_

We have discussed before how embedding a cooperating cross-origin "mailman" iframe could bypass the cross-origin restriction. (And in this context Storage Partitioning was brought up.)

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