Files
cf-rhett b4ed8071ea recovery: add unchecked congestion window controller
Some deployments constrain transmission outside quiche but still need
QUIC recovery. Add an opt-in controller with a fixed congestion window
that does not adapt to ACKs or loss.

The controller preserves ACK processing, RTT estimation, loss detection
and bytes-in-flight accounting. Its window defaults to usize::MAX, and
callers can set a finite byte window through the Rust, C and
tokio-quiche configuration APIs. The setting has no effect unless the
controller is enabled and selected.

Restore the configured window in controller callbacks and after PMTU
updates. This prevents shared recovery code from changing the policy
permanently.

The controller is behind the non-default
congestion_window_unchecked_available feature in quiche and
tokio-quiche. With the default window, callers must enforce their own
transmission limits.
2026-10-14 16:49:27 +01:00
..