Token-shape commit (commit A of the deferred-follow-ups pass that
extends RFC 9002 retransmit beyond the receive-side flow-control
extensions originally shipped at commit 9e6fa3d).
New variants on RecoveryToken sealed class:
- Stream(streamId, offset, length, fin): STREAM data range we
sent. On loss the dispatcher will re-queue the range on the
stream's SendBuffer (commits C, D wire that).
- Crypto(level, offset, length): CRYPTO bytes at a specific
encryption level. RFC 9000 §17.2.5 + §13.3: handshake bytes
are reliable; lost CRYPTO retransmits at the same encryption
level. Commit E wires the per-level dispatch.
- ResetStream(streamId, errorCode, finalSize),
StopSending(streamId, errorCode),
NewConnectionId(seq, retirePriorTo, cid, statelessResetToken):
reliable per RFC 9000 §13.3, scaffolding-only since :quic
doesn't currently emit any of these. The pendingResetStream /
pendingStopSending / pendingNewConnectionId maps on
QuicConnection are populated by the dispatcher but not yet
drained by any writer code path.
QuicConnection.onTokensLost extended with the new variants:
- Stream/Crypto: route to the matching SendBuffer.markLost
(currently a no-op — see SendBuffer.markLost kdoc; commit C
replaces the stub with the retain-until-ACK rewrite).
- ResetStream/StopSending/NewConnectionId: write to the
pending* maps; future emit code drains them.
NewConnectionId data-class needs explicit equals/hashCode because
its ByteArray fields would otherwise compare by identity (Kotlin
data-class auto-equals limitation). Tested.
Tests added (4):
- whenDispatch_isExhaustive extended with all 10 variants;
catches at compile time if a new variant is added without
updating the dispatcher
- newConnectionId_arrayEqualityIsByContent
- stream_equalityByValue
- crypto_equalityByValue
SendBuffer gains placeholder markLost(offset, length, fin) and
markAcked(offset, length) methods — both no-ops today. Their
signatures are stable so the dispatcher wiring lands once now and
doesn't need re-touching when commit C makes them functional.
Full :quic test suite passes.
https://claude.ai/code/session_01PYYez8a6sjiakyjAxsfCEQ
Claude
7f6d9085a4