Update the two affected plan docs now that RFC 9002 retransmit is
shipped on this branch.
quic/plans/2026-05-04-control-frame-retransmit.md:
- Mark plan as shipped 2026-05-05; list the 15 commits that landed it
(plan + 9 steps + 5 follow-ups + perf + audit).
- Document what changed vs the original scope: the deferred follow-ups
(STREAM data, CRYPTO, RESET_STREAM/STOP_SENDING/NEW_CONNECTION_ID)
all shipped on top of the receive-flow-control core.
- Note the binary-search SendBuffer perf optimisation and the
audit-driven first-call-wins fix.
- Update the cap-workaround status: initialMaxStreamsUni is back to
10_000 (not the 1_000_000 mentioned in the original Why).
quic/plans/2026-04-26-quic-stack-status.md:
- Phase F downgraded from "partial" to "done (no CC)" — loss
detection, RTT estimator, PTO, and per-frame retransmit shipped.
- Removed "no STREAM retransmit" / "SendBuffer doesn't retain bytes
until ACK" from the deliberately-don't-do list (now do).
- Added congestion-control as the new deliberately-don't-do entry.
- Crossed out the corresponding deferred-work items; added congestion
control as deferred item #8.
- Listed the new recovery test files in the test inventory.
- Linked to the retransmit plan + implementation log.
https://claude.ai/code/session_01PYYez8a6sjiakyjAxsfCEQ
The shipping fix raises initialMaxStreamsUni to 1M to dodge the
moq-rs cliff that fired when our :quic emitted its first
MAX_STREAMS_UNI extension. That sidesteps the symptom but leaves
every ack-eliciting control frame one wire-loss away from a silent
stall (MAX_DATA, MAX_STREAM_DATA, RESET_STREAM, etc.). Browser
QUIC stacks (Firefox neqo and Chrome quiche, both verified by
reading source) implement RFC 9002 §6 loss detection + per-frame
retransmit; :quic does not.
Plan documents:
- the architecture, mirroring neqo's typed-token shape (chosen
over quiche's monotonic-control-frame-id deque on code-fit
grounds — better match for :quic's existing sealed-class
Frame / MoqLiteControl idioms)
- file-by-file implementation order in 9 steps that each compile
and test independently
- inventory of ~50 tests to port from neqo (9 from fc.rs, ~20
from recovery/mod.rs, ~10 connection-level, plus codec round
trips). Each row links to the upstream neqo test by file:line
and the equivalent Kotlin test name we'll add
- explicit out-of-scope list (STREAM data retransmit, CRYPTO
retransmit, congestion control, 0-RTT, multipath) — separate
follow-ups
- effort estimate (4–7 days) and acceptance criteria
References upstream code at /tmp/quic-refs/neqo (mozilla/neqo) and
/tmp/quic-refs/quiche (google/quiche), sparse-cloned for source
verification.
https://claude.ai/code/session_01PYYez8a6sjiakyjAxsfCEQ
Claude