Windows: platform-thread warnings during Bluetooth discovery

[translibrius]

Hi, I’m seeing the following warnings when running Bluetooth discovery on Windows:

The 'flutter_classic_bluetooth/discovery_results' channel sent a message from native to Flutter on a non-platform thread.
The 'flutter_classic_bluetooth/discovery_state' channel sent a message from native to Flutter on a non-platform thread.

Discovery still appears to work, but Flutter notes that this may result in lost messages or crashes.

Looking at the Windows implementation, HandleStartDiscovery runs discovery in a background std::thread. The discovery result events and final discovery state event appear to be sent directly from that thread.

Environment

• flutter_classic_bluetooth: 0.1.5
• Flutter: 3.44.1
• Platform: Windows

Steps to reproduce

1. Listen to the discovery state and results streams.
2. Start Bluetooth discovery.
3. Observe the warnings in the application output.

Flutter threading documentation:
https://docs.flutter.dev/platform-integration/platform-channels#channels-and-platform-threading

[almasumdev]

Fixed in 0.1.7. The discovery result and state events now go out on the platform thread instead of the background discovery thread, so those warnings should be gone.
If you can update and confirm it looks clean on your setup I'll close this out. Thanks for the clear report and the accurate diagnosis.