Two steady-state faults previously bubbled a bare `?` to conn.close / silently
muted the rest of a session. Recover in place instead.
#4 — capture loss (virtual_stream): a mid-session capture stall/disconnect
(`try_latest` Err: PipeWire/compositor thread ended, virtual output gone) ended
the whole session — and the native client has no reconnect path, so it had to
cold-restart the handshake. Now rebuild the pipeline IN PLACE at the current
mode via build_pipeline_with_retry (same primitive the mode/session switch uses),
force a keyframe, and only propagate when the bounded retry is exhausted. A
consecutive-rebuild cap stops a flapping source from looping the client through
endless cold IDRs. Track the live mode so a rebuild after a mode switch targets
the right mode (also fixes the session-switch rebuild using the stale mode).
#3 — native audio thread (audio_thread): broke the loop on ANY next_chunk Err,
spawned once per session and never restarted, so a transient 5 s quiet-sink
timeout permanently muted a multi-hour session. Make a quiet sink return an empty
chunk (not an Err) in both backends so only a genuinely dead capture thread is an
Err, and reopen-with-backoff (INJECTOR_REOPEN_BACKOFF) on death, keeping the Opus
encoder + monotonic seq. Documents the next_chunk contract; also makes the
GameStream audio sender survive quiet sinks for free.
Resolves reliability backlog #3 and #4.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
enricobuehler
55d5a4278f