Adds smoking-gun trace pair (failing vs successful broadcast) and
records that the test-side mitigation budget is exhausted:
- 706ccda67 per-method relay reset
- 8cc7cbd42 hang-listen single long-lived subscribe
- 00f6cba31 speaker warmup bump 150ms -> 600ms
- 207057374 hang-listen 250ms post-announced() sleep
Of these, only the single-subscribe fix moved the needle (5/5 fail
-> ~2-3/5 pass). The remaining flake is in moq-relay 0.10.x's
per-broadcast announce -> subscribe-pump routing: the relay
accepts the listener's wire SUBSCRIBE but doesn't open an upstream
SUBSCRIBE bidi to the speaker. Speaker stderr shows ONE event for
failing broadcasts (ANNOUNCE inbound) and NOTHING after — no
SUBSCRIBE inbound, the audio publisher's send() loops on
'no inboundSubs' until hang-listen times out.
Three next steps documented for upstream support:
1. Re-run with RUST_LOG=moq_relay=trace
2. File upstream bug at kixelated/moq
3. Try moq-relay > 0.10.25
This investigation closes; further mitigations should come from
the upstream side.
Claude
1cb4110ce0