MSC4075: MatrixRTC m.rtc.notification Call Ringing and Notifications

[toger5]

Rendered

To-do:

• How do you decline a call? MSC4310
• Implementations using revised format from 04635eb (#4075)
  • Ruma
• Implementation using revised formats with relations 7c996bb (#4075)
• Implementation using revised formats with lifetime 6362c23 (#4075)
• This looks very similar to m.call.invite but with much less info. Have we taken into account learnings from this existing capability?
  • edit by @toger5: looking into this it seems that the lifetime concept makes sense. It allows the sending client to know/control when the receiver stops ringing. Additional precautions need to take place to not allow for infinite rings. This is part of 6362c23 (#MSC4075)

Dependencies:

• MSC4143: MatrixRTC #4143

Implementations:

• Element Web
  • sending rings: Add ringing for matrixRTC matrix-react-sdk#11870
  • ringing: Add ringing for matrixRTC matrix-react-sdk#11870
• Ruma
  • notify event support: Add CallNotify event as described by MSC4075 ruma/ruma#1704
• Element X
  • android sending rings
  • android ringing
  • ios sending rings
  • ios ringing
• Extensible events fallback
  • Element web
  • Element X ios
  • Element X android

[uhoreg]

@toger5 You've added some implementations in the PR description. Do these implement the MSC in full, or are there parts of the MSC that are still lacking implementation?

[toger5]

Yes it's implemented in full. At least on the platforms shown in the description (EW).

There are optional configurations that are still missing. (Allowing to send a notification to a specific subset of users) but the API for this is already part of the SDK. There is no ui for this however and we are not sure we want that in EW.