678 B
678 B
Fix a previously undetected trio-asyncio task lifetime linking issue with the to_asyncio.open_channel_from() api where both sides where not properly waiting/signalling termination and it was possible for asyncio-side errors to not propagate due to a race condition.
The implementation fix summary is: - add state to signal the end of the trio side task to be read by the asyncio side and always cancel any ongoing task in such cases. - always wait on the asyncio task termination from the trio side on error before maybe raising said error. - always close the trio mem chan on exit to ensure the other side can detect it and follow.