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l.py", line 47, in arecv_message Jul 28 10:37:49 i...
# ask-ai
b
l.py", line 47, in arecv_message Jul 28 103749 ip-172-31-13-140 python3[122212]: return _read_message(await dplx.recv_bytes(), messages) Jul 28 103749 ip-172-31-13-140 python3[122212]: ^^^^^^^^^^^^^^^^^^^^^^^ Jul 28 103749 ip-172-31-13-140 python3[122212]: File "/home/ubuntu/line_service/venv/lib/python3.12/site-packages/livekit/agents/utils/aio/duplex_unix.py", line 35, in recv_bytes Jul 28 103749 ip-172-31-13-140 python3[122212]: len_bytes = await self._reader.readexactly(4) Jul 28 103749 ip-172-31-13-140 python3[122212]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Jul 28 103749 ip-172-31-13-140 python3[122212]: File "/usr/lib/python3.12/asyncio/streams.py", line 752, in readexactly Jul 28 103749 ip-172-31-13-140 python3[122212]: await self._wait_for_data('readexactly') Jul 28 103749 ip-172-31-13-140 python3[122212]: File "/usr/lib/python3.12/asyncio/streams.py", line 545, in _wait_for_data Jul 28 103749 ip-172-31-13-140 python3[122212]: await self._waiter Jul 28 103749 ip-172-31-13-140 python3[122212]: asyncio.exceptions.CancelledError Jul 28 103749 ip-172-31-13-140 python3[122212]: The above exception was the direct cause of the following exception: Jul 28 103749 ip-172-31-13-140 python3[122212]: Traceback (most recent call last): Jul 28 103749 ip-172-31-13-140 python3[122212]: File "/home/ubuntu/line_service/venv/lib/python3.12/site-packages/livekit/agents/ipc/proc_pool.py", line 167, in _proc_spawn_task Jul 28 103749 ip-172-31-13-140 python3[122212]: await proc.initialize() Jul 28 103749 ip-172-31-13-140 python3[122212]: File "/home/ubuntu/line_service/venv/lib/python3.12/site-packages/livekit/agents/ipc/supervised_proc.py", line 168, in initialize Jul 28 103749 ip-172-31-13-140 python3[122212]: init_res = await asyncio.wait_for( Jul 28 103749 ip-172-31-13-140 python3[122212]: ^^^^^^^^^^^^^^^^^^^^^^^ Jul 28 103749 ip-172-31-13-140 python3[122212]: File "/usr/lib/python3.12/asyncio/tasks.py", line 519, in wait_for Jul 28 103749 ip-172-31-13-140 python3[122212]: async with timeouts.timeout(timeout): Jul 28 103749 ip-172-31-13-140 python3[122212]: File "/usr/lib/python3.12/asyncio/timeouts.py", line 115, in aexit Jul 28 103749 ip-172-31-13-140 python3[122212]: raise TimeoutError from exc_val Jul 28 103749 ip-172-31-13-140 python3[122212]: TimeoutError
t
Thanks for reaching out, Sandeep. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
The error trace you provided indicates issues related to 
asyncio.exceptions.CancelledError
and 
TimeoutError
. These exceptions typically occur in asynchronous operations when tasks are either cancelled or exceed their allowed execution time. Here are some steps to address these issues: • Handling CancelledError: ◦ Ensure that cancellation is propagated correctly by re-raising the 
CancelledError
unless specific cleanup is required. ◦ For long-running tasks, catch the exception and perform necessary cleanup before re-raising it. For example:
Copy code
except asyncio.CancelledError:
    <http://logger.info|logger.info>("Task cancelled")
    self._close_current_generation()
    raise
• Handling TimeoutError: ◦ Convert generic timeouts to domain-specific errors for better error handling. For example:
Copy code
except asyncio.TimeoutError:
    raise APITimeoutError() from None
◦ Log timeout events for debugging purposes and provide user-friendly fallback responses. For example:
Copy code
except TimeoutError:
    yield "Sorry, I’m taking too long to respond. Please try again later."
    return
• Best Practices: ◦ Always log cancellation and timeout events to aid in debugging. ◦ Use 
finally
blocks for proper cleanup when handling cancellations. ◦ For RPC operations, ensure that exceptions are converted to specific RPC errors, such as 
RpcError
with appropriate error codes. If you need further assistance or specific guidance for your implementation, let me know. Sources: examples/rpc.py | livekit-agents/livekit/agents/ipc/supervised_proc.py | External data and RAG | LiveKit Docs | server/chatgpt.py
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