Files
OpenFUT/openfut-adapter-fifa17
funman300 d6aa704b01 fix(fifa17): a dangling manager ref must not refuse the squad save
Every real squad save was failing with 400 unresolved_wire_ids. Reproduced on
staging with the repo's own seeder, which sends the captured retail body:

  route=squad-replace status=400 outcome=unresolved_wire_ids detail=[[100000427]]

FIFA 17 always sends a manager ref, and on a real profile it does not resolve to
an owned instance. scripts/sold-staging-seed-squad.py already recorded why:
production's own squad points at instance 100000427, which is absent from
production's /club/staff (1975 items spanning 100000001..100004826), and the
client accepts that squad back unchanged -- so the client never validates the
manager against the club, and the pre-0023 server accepted it.

Making the manager ownership-backed (d37a9d5 / 25f4ad1) turned that ref into a
hard refusal, which took out the primary FUT write path: no squad save means no
squad, which means the client will not enter the FUT hub at all.

A manager ref is not a squad slot. An unresolvable PLAYER slot must still refuse
the save -- committing it would silently drop an owned card from the club. An
unresolvable MANAGER ref just means there is no ownership-backed manager, which
is exactly the state before migration 0023: the save commits, the assignment is
cleared as a full replacement should, and the id is reported on
ProposedSquad::unresolved_manager_wire_id so the host can log what it could not
map instead of letting it vanish. A ref that DOES resolve is still assigned and
still authorized against the club.

Verified end to end on staging: the seeder now answers {"id": 0} with 11
occupied slots, the host logs
`manager_ref_unresolved=100000427 (saved with no manager assignment)`, and the
projected squad carries `manager: []`.
2026-08-21 04:28:43 +00:00
..

openfut-adapter-fifa17

The FIFA 17 game adapter. Everything true of FIFA 17 specifically lives here, so that neither OpenFUT Core nor the generic protocol crates have to know about it.

  openfut-protocol-blaze   generic Blaze: Fire2 framing, Heat2/TDF codec
           ▲
  openfut-adapter-fifa17   THIS: command tables, response bodies, dispatch order
           ▲
  OpenFUT Core             game-independent FUT domain (not yet wired)

Status

Surface Port State
Blaze / Fire2 RPC 42130 Implemented, byte-for-byte parity-tested
Redirector (HTTPS + XML) 42127 Python only
Nucleus OAuth stub 42131 Python only
LSX / Origin 4216 Python only
Roster XML 8081 Python only
UTAS / RS4 8099 Python only
POW / EASFC 8094 / 8080 Python only

Nothing here is wired into the running backend. The crate answers frames; it opens no socket, terminates no TLS and owns no runtime. The Python backend remains the live service and the behavioural oracle.

What the adapter owns, and what it must not

Owns: component/command/notification IDs, response body shapes, dispatch ordering, session identity, the fetchClientConfig tables.

Must not own: FUT domain state. Blaze is an auth/session/config protocol — no coins, packs, clubs or squads appear on this wire — so Session holds a session key, a locale, a service name, an auth code and a flag, and that is all. When UTAS is migrated that boundary will need active defending; here it comes free.

Parity

./check-parity.sh          # oracle freshness + byte-for-byte replay
./check-parity.sh --regen  # after an intentional oracle change

fixtures/blaze_transactions.jsonl holds 49 request→response(s) transactions produced by calling the real blaze_responder_v3b.dispatch(). They replay in order against a shared session per connection, so ordering-dependent behaviour is exercised rather than assumed: preAuth captures the locale that later ALOC fields echo, and login sets the auth code getAuthToken returns afterwards.

Comparison is byte-for-byte including frame count and order — a missing post-login notification or a reply where the oracle stays silent fails here.

The suite was mutation-tested: swapping two post-login notifications, flipping one enum deep inside AccountInfo, and hardcoding an address in utas_base()/nucleus_base() were each verified to turn it red. The third initially did not, because the config templating had made those helpers dead code; the table now templates on URL-level tokens so they are the single place a URL shape is defined.

Three behaviours that are easy to get wrong

  • Login answers with four frames, in order: reply, then UserAuthenticated, UserSessionExtendedDataUpdate, UserAdded.
  • An unimplemented RPC still gets an empty reply. Silence makes the client wait for a timeout; an empty reply lets every field fall back to a client-side default and the boot continues.
  • Non-request message types get nothing at all.

No error replies are emitted. msgType 3 exists, but the error-code placement is UNRESOLVED — three clean-room sources disagree between header[14:16], a metadata ERRC, and a payload CNTX/ERRC — so emitting one would be a guess on the wire.

The client config table

fixtures/client_config.json carries 227243 rows per CFID, generated from the Python oracle and templated on {utas_base}, {nucleus_base}, {pow_content_url}, {advertise}, {bind}, {pow_host}. It is reverse-engineered data, not logic, and deriving it mechanically removes a class of transcription typo no reviewer could catch. The generator does not take its own templating on trust: it substitutes real addresses back in and diffs against the oracle for every section before writing the file.

The table must be complete, not representative. The client resolves a per-call key (FUT_RS4_URL_<CALL>) before a per-module one, and any unresolved call falls back to a real, dead EA host — that is what produced "there has been an error connecting to FIFA 17 Ultimate Team" mid-session when only the boot subset was served.

Known defect reproduced deliberately

nucleusConnect and nucleusConnectTrusted are built from the bind address, not the advertised one. On the live split deployment that means the backend tells a client on another machine to reach Nucleus at http://0.0.0.0:42131, which it cannot. Verified against the running container, not inferred.

This is reproduced exactly, because it is what the only proven-working configuration does and changing it would break parity. It also implies the Nucleus stub is not actually reached in the current remote flow. Fixing it is a separate change that needs live validation — see the vault.

Configuration

Nothing is hardcoded. AdapterConfig carries Identity (persona, ids, email, namespace, entitlement group, …) and Endpoints (advertise, bind, POW hosts, telemetry/ticker/QoS ports). Default gives the project's synthetic offline identity on loopback; a remote deployment must override advertise.

Bind and advertise are deliberately distinct: an advertised URL must carry the address the client can reach, which on a two-machine deployment is not the address the server binds.