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web: force WebTransport-only moq-watch sessions

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every.channel 2026-02-24 23:03:34 -08:00
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evolution/proposals/ECP-0076-webtransport-only-web-watcher.md Normal file
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# ECP-0076: WebTransport-Only Browser Watcher Path
## Context
The browser watcher (`@moq/watch`) races WebTransport against WebSocket fallback by default. In production relay sessions this fallback path correlates with degraded playback behavior (frequent stream resets and unreliable audio despite active subscription).
## Decision
In `apps/web/app.js`, configure each `<moq-watch>` instance to disable WebSocket fallback before connect:
- `watch.connection.websocket = { enabled: false }`
Also set default watcher volume to full (`volume="1"`) to avoid low-volume false negatives during validation.
## Rationale
- Aligns browser transport with the intended relay mode (WebTransport MoQ).
- Removes fallback-induced variability from live playback behavior.
- Keeps implementation local to web app wiring without forking upstream packages.
## Reversibility
- Remove the connection override to restore default fallback behavior.