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RTCEngine gets fully town down and recreated initially when an initial connection is created and also whenever a reconnection occurs. This means that any class that has a reference to engine must be informed of this new change so that it can keep its reference to engine current.
The current means this is being done is by calling a setupEngine method on all dependents - right now, LocalParticipant and E2EEManager, plus soon OutgoingDataStreamManager. This is relatively coupled though because the room needs to call that method on each of these classes!
Potential solution
The existing approach works, but is inelegant. To attempt to solve this in a slightly more elegant way, I've added a new SupersededBy event to the RTCEngine which is fired on the old engine whenever a new engine is generated, which allows anybody who has the engine to always have the latest copy.
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
This PR includes no changesets
When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types
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Admittedly this is a little weird - EngineEventCallbacks now contains a reference to RTCEngine, so putting this expression directly within the extends creates a reference cycle that typescript doesn't seem to like. Breaking it up like this seems to solve that problem, though.
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nice!
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Problem / Concern
RTCEnginegets fully town down and recreated initially when an initial connection is created and also whenever a reconnection occurs. This means that any class that has a reference toenginemust be informed of this new change so that it can keep its reference toenginecurrent.The current means this is being done is by calling a
setupEnginemethod on all dependents - right now,LocalParticipantandE2EEManager, plus soonOutgoingDataStreamManager. This is relatively coupled though because the room needs to call that method on each of these classes!Potential solution
The existing approach works, but is inelegant. To attempt to solve this in a slightly more elegant way, I've added a new
SupersededByevent to theRTCEnginewhich is fired on the old engine whenever a new engine is generated, which allows anybody who has the engine to always have the latest copy.