Implement support for MSC4140: Cancellable delayed events #903

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opened 2025-07-10 12:15:59 +00:00 by nex · 5 comments

nex commented

2025-07-10 12:15:59 +00:00

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https://github.com/matrix-org/matrix-spec-proposals/pull/4140

This MSC allows clients to schedule events by offloading the wait to the server. It also allows that event to be cancelled in future.
This feature is used by Element Call in order to reliably un-stuck calls in the event a client disconnects before it can send the leave call payload. It could also have interesting implications for reminder bots and such.

https://github.com/matrix-org/matrix-spec-proposals/pull/4140 This MSC allows clients to schedule events by offloading the wait to the server. It also allows that event to be cancelled in future. This feature is used by Element Call in order to reliably un-stuck calls in the event a client disconnects before it can send the leave call payload. It could also have interesting implications for reminder bots and such.

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2025-07-10 12:15:59 +00:00

nex commented

2025-07-12 11:56:14 +00:00

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@utop-top wrote in #903 (comment):

https://github.com/matrix-construct/tuwunel/issues/105 Same problem as tuwunel，Notifications on Element X are often delayed and sporadic

Element X receiving delayed notifications is a separate issue, this is a feature proposal to improve things like Element Call. If you're having issues with Element X, feel free to open a different issue with some more info

@utop-top wrote in https://forgejo.ellis.link/continuwuation/continuwuity/issues/903#issuecomment-16827: > https://github.com/matrix-construct/tuwunel/issues/105 Same problem as tuwunel，Notifications on Element X are often delayed and sporadic Element X receiving delayed notifications is a separate issue, this is a feature proposal to improve things like Element Call. If you're having issues with Element X, feel free to open a different issue with some more info

Jade commented

2025-07-12 11:57:50 +00:00

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@utop-top that's unrelated to this feature.

utop-top commented

2025-09-10 04:55:12 +00:00

I think this feature is important. Without it, element-call cannot work and continuwuity becomes a semi-finished product with only text messaging function but no voice or video function.