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fix(client): recover remote playback after media interruptions - #2500
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- Re-arm all playback watchdogs when the page leaves a media interruption (visible again and the WebKit audio session no longer interrupted): fresh retry budget and an immediate play attempt. - Mark an audio element as blocked once its retries are exhausted, so autoplayBlocked$ and call.resumeAudio() can recover it. - Trace audioSession.state in the default audio element mode too. Ticket: REACT-1217
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Included review availability: This review used your included allowance. Your plan provides up to 2 included reviews per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe change adds media interruption detection and playback recovery. Watchdogs can be re-armed after interruptions and report when recovery attempts end. DynascaleManager manages watchdog lifecycles, audio-session tracing, and delayed audio stream updates. AudioBindingsWatchdog traces changes in bound audio-element state. ChangesMedia recovery and tracing
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant Document
participant AudioSession
participant watchMediaInterruptions
participant DynascaleManager
participant MediaPlaybackWatchdog
participant HTMLMediaElement
Document->>watchMediaInterruptions: visibility change
AudioSession->>watchMediaInterruptions: state change
watchMediaInterruptions->>DynascaleManager: interruption ends
DynascaleManager->>MediaPlaybackWatchdog: rearm tracked watchdogs
MediaPlaybackWatchdog->>HTMLMediaElement: attempt playback when eligible
Suggested reviewers: Merge Risk: ⚪ Minimal · up to No actionable issue identified that should block merging. Physical iOS validation remains outstanding. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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🧪 Generate unit tests (beta)
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Actionable comments posted: 2
- 🪄 Fix CodeRabbit comments on this PR
🤖 Prompt to fix review comments
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Inline comments:
Review comments at @packages/client/src/helpers/DynascaleManager.ts:
- Around line 403-409: Update the `onGiveUp` handling in `DynascaleManager` so
its blocked state can be distinguished from a user-gesture block, and let
`MediaPlaybackWatchdog.rearm()` proceed with later recovery retries after a
transient failure. Add a test verifying that the first re-armed attempt can fail
and a subsequent retry still occurs.
- Around line 455-457: Ensure createPlaybackWatchdog does not register a
watchdog for an audio element after its binding has been cleaned up. Cancel the
queued source-change timer during binding cleanup, or verify the binding is
still active before creating the watchdog; preserve interruption recovery for
active bindings.
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packages/client/src/helpers/DynascaleManager.tspackages/client/src/helpers/MediaPlaybackWatchdog.tspackages/client/src/helpers/__tests__/DynascaleManager.test.tspackages/client/src/helpers/__tests__/MediaPlaybackWatchdog.test.tspackages/client/src/helpers/__tests__/mediaInterruptions.test.tspackages/client/src/helpers/mediaInterruptions.ts
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jdimovska
approved these changes
Oct 8, 2026
oliverlaz
added
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backport-v1
Clear the pending source-change timer when the audio element is unbound, so it can no longer assign a stale srcObject or register a playback watchdog for an unbound element.
Track whether an audio element was marked blocked because playback recovery gave up, and let the watchdog keep retrying it after a re-arm. Only autoplay-policy blocks still require a user gesture. The element stays reported as blocked until it actually plays.
- skip routine `suspend` events that need no recovery; trace explicit pauses once, with the skip reason - tag playback traces with sessionId and trackType - trace audio element state on change from AudioBindingsWatchdog - keep the settle window running through a routine `suspend`
oliverlaz
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Oct 9, 2026
### 💡 Overview After a phone call, Siri or backgrounding on iOS/Safari, remote audio could stay paused for the rest of the call. The playback watchdog gave up after ~40 s and nothing re-armed it when the interruption ended, and an element that ran out of retries was not surfaced as blocked, so no "tap to resume audio" prompt was shown. ### 📝 Implementation notes - New `watchMediaInterruptions` helper: fires when the page is visible again and `navigator.audioSession` is no longer `interrupted`. - `MediaPlaybackWatchdog.rearm()` resets the retry budget and tries `play()` immediately, including elements regular recovery skips as blocked or not ready. `DynascaleManager` re-arms all bound audio/video watchdogs on that signal. - An audio element whose retries are exhausted is marked blocked, so `autoplayBlocked$` / `call.resumeAudio()` (and the React `AudioBlockedNotification`) can recover it. - `audioSession.state` is now traced in the default element mode too, through one shared listener that is removed on leave. - Quieter playback tracing: a routine `suspend` that needs no recovery is no longer traced (11% and 41% of all records in two field traces), an explicit `pause` is traced once with the skip reason, and playback records now carry `sessionId` and `trackType`. - `AudioBindingsWatchdog` traces `audioBinding.state` (paused, muted, volume, readyState, sinkId, track state) for bound audio elements, only for bindings whose state changed. `setEnabled(false)` now only silences the dangling-binding warning. - Fixed: a routine `suspend` during the settle window cancelled it, so the next real pause backed off instead of recovering immediately. - Not yet verified on a physical iOS device. 🎫 Ticket: https://linear.app/stream/issue/REACT-1217 📑 Docs: n/a <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **Bug Fixes** * Improved audio playback recovery when a page becomes hidden or an audio session is interrupted, including retrying when playback can resume. * Recovery stops after repeated failures, and pending playback changes or retries no longer continue after an audio element is unbound. * Playback recovery avoids unnecessary attempts when media is already playing, has no source, or has ended, and correctly handles autoplay-blocked playback. * Playback recovery now gets a fresh retry opportunity after interruptions end, while routine media suspensions are less likely to interrupt recovery. <!-- end of auto-generated comment: release notes by coderabbit.ai --> (cherry picked from commit bf7c859)
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added
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💡 Overview
After a phone call, Siri or backgrounding on iOS/Safari, remote audio could stay paused for the rest of the call. The playback watchdog gave up after ~40 s and nothing re-armed it when the interruption ended, and an element that ran out of retries was not surfaced as blocked, so no "tap to resume audio" prompt was shown.
📝 Implementation notes
watchMediaInterruptionshelper: fires when the page is visible again andnavigator.audioSessionis no longerinterrupted.MediaPlaybackWatchdog.rearm()resets the retry budget and triesplay()immediately, including elements regular recovery skips as blocked or not ready.DynascaleManagerre-arms all bound audio/video watchdogs on that signal.autoplayBlocked$/call.resumeAudio()(and the ReactAudioBlockedNotification) can recover it.audioSession.stateis now traced in the default element mode too, through one shared listener that is removed on leave.suspendthat needs no recovery is no longer traced (11% and 41% of all records in two field traces), an explicitpauseis traced once with the skip reason, and playback records now carrysessionIdandtrackType.AudioBindingsWatchdogtracesaudioBinding.state(paused, muted, volume, readyState, sinkId, track state) for bound audio elements, only for bindings whose state changed.setEnabled(false)now only silences the dangling-binding warning.suspendduring the settle window cancelled it, so the next real pause backed off instead of recovering immediately.🎫 Ticket: https://linear.app/stream/issue/REACT-1217
📑 Docs: n/a
Summary by CodeRabbit