Mirrors prod's TK2 wire flow: the first arriver (parked, picks up cached
pair on a later poll) gets matching_state 3007 (SUCCEEDED_OWNER); the
second arriver (whose poll triggered the pair) gets 3004 (SUCCEEDED).
Observationally inert in the public matching code path today — the
client's Matching class writes isOwner from the response into a field
that nothing in TK2/ranked reads. Matching_Room (private rooms) DOES
read it but from a separate code path that doesn't consult our response.
We send the split anyway for prod fidelity and to leave room for future
flows (rematch UI, etc.) that might start consuming it.
TryPairAsync now returns PairUpResult(Match, IsOwner) instead of bare
PendingMatch?, so the controller can decide owner vs joiner without
re-deriving it.
Also documents on DoMatchingResponseDto why we omit prod's `room_id`
field (not in the client's DoMatchingDetail model; private-room flows
get their room id from a different API and don't consult this response).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Solo pollers park (3001 RETRY); two concurrent pollers pair and both
receive 3004 + same BattleId. Cache hits on the first arriver's next
poll. ?scripted=1 retains today's solo Scripted path for dev work.
Response DTO's BattleId/NodeServerUrl become nullable so 3001 omits
them on the wire (WhenWritingNull policy drops them).
ASP.NET's default bool binder rejects "1" as a value, so the scripted
opt-in is bound as string? and parsed permissively (accepts "1" and
"true"/"True"/etc.) rather than relying on built-in bool binding.
The decompiled client's DoMatchingBase.SettingCardMasterId calls
jsonData["card_master_id"].ToInt() with no Keys.Contains guard when
matching_state ∈ {3004, 3007, 3011}. Omitting the field crashes the
client with KeyNotFoundException at Cute.NetworkManager+Connect.
Add CardMasterId to DoMatchingResponseDto with a default value of 1
(matching the /load/index response and prod captures). Extend the
controller test to assert the field is present.
Caught during the v1 smoke walk-through; full client log line:
[Error: Unity Log] KeyNotFoundException: The given key was not
present in the dictionary.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
