Open plan, not started. Conservative scope:
- NewReno reference algorithm (RFC 9002 §7).
- Bytes-in-flight tracking + send-side gating.
- Persistent-congestion handling.
- ~14 unit + 2 integration tests, ~3-5 days work.
Out of scope (deferred follow-ups): pacing, CUBIC, BBR, ECN.
The Why section is honest that this is "good citizen" work, not
"fix a bug" work — the audio cliff was a stream-id / forwarding
issue, not a rate-control issue, and the retransmit subsystem we
just shipped is what production actually needed. Plan stays open as
the natural next item but should not be prioritised over field
validation of the retransmit work.
Reference: neqo's cc/classic_cc.rs.
https://claude.ai/code/session_01PYYez8a6sjiakyjAxsfCEQ
Claude
08bb3e14e1