[BlueX888]

Problem

WebSocketMonitor.receive() sends a PING whenever asyncio.wait() returns without a completed task, even when the liveness deadline has not been reached:

if self._loop.time() - self._last_received >= self._liveness_timeout:
    raise aiohttp.ServerTimeoutError(...)
self._ping_sent = True
ping = asyncio.create_task(self._ws.ping())

At that point the wait's remaining budget is deadline - now. When that budget is smaller than the loop's timer resolution (observed on Windows, ~15.6 ms), asyncio.wait() can return immediately, so the loop probes again, wakes again, and repeats until the clock finally crosses the deadline. One unanswered probe produced 113 PINGs at the same timestamp before the liveness error:

0.187 client sending ping #113
0.187 server got PING #113
0.203 APIConnectionError: WebSocket connection lost (caused by ServerTimeoutError: No WebSocket messages received for 0.2 seconds)

The existing test tests/test_websocket_monitor.py::test_outbound_audio_does_not_hide_unanswered_ping catches this on Windows (assert 113 == 1 at assert pings == 1); it passes on Linux, where the timer is precise enough that the burst does not happen.

Fix

Once the first probe is out, an empty wake can only be an early return. Keep waiting for the liveness deadline instead of probing again; a PONG (or any incoming frame) still resets the window through the receiver path, and the timeout still fires at liveness_timeout.

Tests

• New test_early_wake_does_not_resend_the_liveness_probe simulates one early wake deterministically: it fails on main (three PINGs) and passes with the change, so the behavior is covered on every platform rather than only where the timer rounds.
• tests/test_websocket_monitor.py: 13 passed.
• tests/test_inference_stt_connection.py tests/test_inference_stt_fallback.py: 80 passed.
• ruff check and ruff format --check: clean.

Note

Maintainer PR #8147 also edits websocket.py (close/error handling) but leaves this probe logic untouched, so the two changes are compatible; happy to fold this into that PR instead if you prefer to batch.

🤖 Generated with Claude Code

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.