Campaign N slice N0 (docs/plans/2026-07-29-network-transport-campaign.md):
the referee that slices N1-N5 are graded against, test-project only, zero
production changes.
- VirtualClock: Stopwatch-shaped deterministic time source (fixed 100 ns
ticks) that N1 will inject behind the production TransportClock.
- AceCryptoModel: verbatim port of ACE CryptoSystem Search/ConsumeKey over
our IsaacRandom - 256-key window, parked-key set, Headroom/OrphanCount
diagnostics (CryptoSystem.cs:8-49 cited per method).
- AceSessionModel: transport-free ACE NetworkSession over raw datagrams,
every rule cited to NetworkSession.cs - CRC-before-everything silent
drop, cleartext-NAK early return (no timeout refresh, :283-308),
60 s timeout refresh (:329-331), exact-equality ack dedup exemption
(:342-347), desired+2 NAK trigger with 1 s limit (:351-363), >window
AbnormalSequenceReceived (:393-397), the :474-476 watermark hole,
ack-value cache prune (:663-673), fragment gate (:532-543), seq>=2
caching (:730), Retransmission-flag resends with the ORIGINAL IssacXor
(:675-686), RejectRetransmit, 2 s cleartext cumulative ack, 20 s
TimeSync, EchoResponse, 120 s cache prune (:251-262). ACE's raw
wrap-unsafe comparisons are modeled bug-for-bug, not fixed.
- LossyLink: deterministic drop/reorder/seeded-loss fault injector, pure
data structure.
- FakeAceTransport: IWorldSessionTransport binding a REAL WorldSession to
the model through the link, with the handshake scripted (ConnectRequest
reusing the negotiation fixture layout, CharacterList, ServerReady,
logoff confirmation) - genuine Connect/EnterWorld/Tick/Dispose with no
sockets.
- 19 new tests pin the double, including
CleartextNonAckAdvancesWatermark_TheAceHole (the self-induced wedge
behind scope rows TS-57/TS-58/AP-125), re-key = permanent orphan,
unrequested-resend window burn, the 115-id NAK cap boundary, and a
full no-socket session lifecycle with both ISAAC streams verified
aligned end-to-end.
Core.Net suite: 678 passed / 0 failed (659 existing + 19 new).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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