docs(rust-link): protocol 2 — the read path, and phase 3 as built #255

Merged
whitlocktech merged 2 commits from docs/rust-protocol-2 into main 2026-09-16 16:36:45 +00:00

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Author SHA1 Message Date
f80b9f95c8 docs(modules): the ingest walk, and the two-writer trap it walked into
The module half exercised against the live rig rather than only its own tests:
the working tree installed into a running core, pointed at the workstation
sidecar with a real Rust server behind it. The fresh-install path logged
`cursor started at the feed tail`, a console banid/unban arrived as two
rust_events rows carrying the wipe id, and the wipe row was created by being
mentioned rather than by any "a wipe started" call.

Then the boundary on real rows: with both ban events in the table, the public
events route answered {"events":[]} — and answered the same when asked for
player.banned BY NAME.

The trap is worth more than the proof. The state row read as online=1 with
hostname=NULL, a shape no code path writes. Two cores shared one database: a
second instance still held the phase 2 release in memory, spoke protocol 1, was
refused 409, and rewrote the row every thirty seconds. Nothing was wrong with
either. What made it look like a defect was two SELECTs in two round trips
assuming the state did not move between them — the same mistake the Pterodactyl
work recorded, and a single atomic read caught the coherent row alternating with
the other writer's.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016wDDVXWMDz82WqE1i969r4
2026-09-16 08:52:48 -05:00
30e72adfcf docs(rust-link): protocol 2 — the read path, and phase 3 as built
The specification the other three repositories are held against, plus the phase
record.

`PROTOCOL.md` §8 is the new contract. Its centre is one field: every frame now
carries `type` — `event`, `snapshot`, `reply`, `control` — and the sidecar files
on that and nothing else. That is the dumb-forwarder property made structural
rather than intended: ten new event kinds are zero change in Rust-Link, and only
a version adding an indexed column touches it at all.

Also in §8: the fifteen-kind catalogue and what each frame carries; `wipeId`
derived by the plugin, which REVERSES §3.2's "deriving one is the website's job"
and says why; boards re-sent on connect and on a cadence; the aggregate rule (a
hook that can fire more than once a second per player is a counter, not an
event); the void rule that stops a read-path hook vetoing a death or a login; and
`GET /feed`, a cursor route separate from `/events` because one route with two
orderings serves the wrong one to every caller that forgets the parameter.

§8.5 is the part to read twice. The classification of a kind as public or staff
is NOT on the wire, deliberately: a boundary declared by the sender is one a
compromised or out-of-date game host can widen, so the module holds a
default-deny allowlist and this table is what its test holds it against.

§8.8 corrects a catalogue rather than a defect: PLAN.md §10 sources
`rust.login.denied` from `CanUserLogin`, and that hook fires on every attempt —
the only way to learn of a denial from it is to be the denier. A denial is the
absence of an approval, and protocol 2 emits both facts so phase 10 can pair them.

`PLAYER_WALK.md` is new, and it exists because half this catalogue cannot fire
without somebody holding a mouse. Ten steps, what each one should produce, and
what counts as a pass — written so the walk can be run without watching the
output live, and so the answer afterwards is readable as a transcript.

PLAN.md §16 is phase 3 as built: the four decisions, the two defects only a
server that BOOTED with the plugin could find (a wipe id that was null for every
real session, and a two-second main-thread stall on unload), what was proven and
how, and — stated plainly rather than implied — the three measurements still
queued on the org lead.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016wDDVXWMDz82WqE1i969r4
2026-09-16 08:39:27 -05:00