Benoit Chesneau 3bf718ea52 fix: graceful disconnect handling for ASGI worker ...

Closes #3484

When a client disconnects during an ASGI request, the worker now:
1. Sends http.disconnect message to the app's receive queue
2. Allows a configurable grace period for cleanup (default: 3 seconds)
3. Only cancels the task after the grace period expires

This follows the ASGI HTTP Connection Scope spec which defines
http.disconnect as the message apps should receive when clients
disconnect: https://asgi.readthedocs.io/en/latest/specs/www.html#disconnect-receive-event

The grace period prevents CancelledError from propagating to async
database operations, allowing SQLAlchemy and other async DB libraries
to properly reset their connection pools.

New config option: --asgi-disconnect-grace-period (default: 3 seconds)

2026-02-03 02:46:07 +01:00

..

settings.md

fix: graceful disconnect handling for ASGI worker

2026-02-03 02:46:07 +01:00