fix: reconnect matchmaking event stream

Game/scripts/control_plane_client.gd

@@ -28,6 +28,8 @@ var _operation := ""
 var _last_queue_create: Dictionary = {}
 var _websocket: WebSocketPeer
 var _websocket_status := "DISCONNECTED"
+var _websocket_retry_seconds := 0.0
+var _websocket_backoff := 1.0
 
 
 func _ready() -> void:
@@ -50,6 +52,8 @@ func _process(_delta: float) -> void:
 	_websocket.poll()
 	var ready_state := _websocket.get_ready_state()
 	if ready_state == WebSocketPeer.STATE_OPEN:
+		_websocket_retry_seconds = 0.0
+		_websocket_backoff = 1.0
 		_set_websocket_status("CONNECTED")
 		while _websocket.get_available_packet_count() > 0:
 			_handle_websocket_packet(_websocket.get_packet())
@@ -57,6 +61,12 @@ func _process(_delta: float) -> void:
 		_set_websocket_status("CONNECTING")
 	elif ready_state == WebSocketPeer.STATE_CLOSED:
 		_set_websocket_status("DISCONNECTED")
+		if not auth_expired and is_valid_access_token(access_token):
+			_websocket_retry_seconds -= _delta
+			if _websocket_retry_seconds <= 0.0:
+				_websocket_retry_seconds = _websocket_backoff
+				_websocket_backoff = minf(_websocket_backoff * 2.0, 30.0)
+				connect_event_stream()
 
 
 func configure(url: String, token: String) -> bool:
@@ -67,6 +77,8 @@ func configure(url: String, token: String) -> bool:
 	base_url = normalized
 	access_token = normalized_token
 	auth_expired = false
+	if _websocket != null:
+		connect_event_stream()
 	return true
 
 
@@ -79,6 +91,7 @@ func connect_event_stream() -> Error:
 	if err != OK:
 		_set_websocket_status("DISCONNECTED")
 		return err
+	_websocket_retry_seconds = 0.0
 	_set_websocket_status("CONNECTING")
 	return OK
 
@@ -86,6 +99,8 @@ func connect_event_stream() -> Error:
 func disconnect_event_stream() -> void:
 	if _websocket != null:
 		_websocket.close()
+	_websocket_retry_seconds = 0.0
+	_websocket_backoff = 1.0
 	_set_websocket_status("DISCONNECTED")
 
 
@@ -244,6 +259,7 @@ func _on_request_completed(result: HTTPRequest.Result, response_code: int, _head
 		if response_code == HTTPClient.RESPONSE_UNAUTHORIZED:
 			access_token = ""
 			auth_expired = true
+			disconnect_event_stream()
 			state.fail("Session expired; sign in again")
 			ranked_profile.set_error("Session expired; sign in again")
 			session_expired.emit()
@@ -272,6 +288,7 @@ func _on_request_completed(result: HTTPRequest.Result, response_code: int, _head
 		access_token = returned_token
 		auth_expired = false
 		session_expires_at = String(payload.get("expires_at", ""))
+		connect_event_stream()
 		session_changed.emit(player_id)
 	elif operation == "queue_create":
 		state.begin_queue(String(payload.get("ticket_id", "")), String(payload.get("playlist", "")))
@@ -334,6 +351,12 @@ func _set_websocket_status(status: String) -> void:
 		return
 	_websocket_status = status
 	websocket_status_changed.emit(status)
+	if status == "CONNECTED":
+		if not state.ticket_id.is_empty() and state.phase not in [MatchmakingState.CANCELLED, MatchmakingState.EXPIRED, MatchmakingState.FAILED, MatchmakingState.LIVE]:
+			if not state.proposal_id.is_empty():
+				recover_proposal(state.proposal_id)
+			else:
+				recover_queue(state.ticket_id)
 
 
 func _idempotency_key(prefix: String) -> String:

multiplayer-todo.md

@@ -1227,7 +1227,7 @@ the local/CI/community transport, not a silent production fallback.
 | # | Task | Acceptance |
 |---|---|---|
 | 8.39 `[D:8.3,8.14,8.17]` | **IN PROGRESS.** `MatchmakingState` now projects queue → proposal → allocation/process-ready/assignment-ready/connect/live plus terminal failure states; autoload `ControlPlaneClient` provides authenticated queue create/recovery/heartbeat/cancel and proposal response requests with idempotency/revision headers; `matchmaking.tscn`/`matchmaking.gd` expose the state and authoritative actions from the main menu; authenticated proposal recovery now reconciles missed proposal events and expires them at read time; the Go API now provides targeted authenticated revisioned event publication and the Godot client consumes state/proposal events | `test_matchmaking_state.gd`, `test_control_plane_client.gd`, `test_matchmaking_ui.gd`, `TestProposalRecoveryIsParticipantScopedAndExpiresAtReadBoundary` and `TestAuthenticatedWebSocketDeliversOnlyTargetedRevisionedEvents` reject stale/gapped/conflicting updates, validate endpoint/token/payload normalization, preserve idempotent duplicates, and guarantee visible phase/terminal copy; wiring durable allocation events into the outbox, wait/latency explanations and Godot runtime verification remain |
-| 8.40 `[D:8.3,8.14]` | **IN PROGRESS.** Pure Go revisioned replica reducer rejects gaps for REST resync, makes duplicate/out-of-order events idempotent, and resumes from the authoritative snapshot revision; authenticated queue-ticket recovery now has an owner-checked REST read; Godot client projection persists non-secret ticket/proposal state, forces authoritative recovery after restart, and can replay a lost queue-create response with the original ticket/idempotency key; the Go API now exposes an authenticated `/v1/events` WebSocket with bounded per-player queues, strict upgrade validation and REST-resync-safe slow-client failure; Godot `ControlPlaneClient` can connect to the stream, consume validated events, and trigger REST recovery on projection gaps | `server/domain/sync.go`, `server/api/events.go`, `server/api/service.go`, `service_test.go`, `matchmaking_state.gd` and `control_plane_client.gd` cover gap, snapshot, replay, same-revision conflict, owner-only ticket recovery, expired-ticket terminal handling, malformed restart snapshots, API-level duplicate-create replay/conflict, authenticated handshake/key rejection and targeted event delivery; durable outbox fan-out, reconnect/resync orchestration and live Godot verification remain |
+| 8.40 `[D:8.3,8.14]` | **IN PROGRESS.** Pure Go revisioned replica reducer rejects gaps for REST resync, makes duplicate/out-of-order events idempotent, and resumes from the authoritative snapshot revision; authenticated queue-ticket recovery now has an owner-checked REST read; Godot client projection persists non-secret ticket/proposal state, forces authoritative recovery after restart, and can replay a lost queue-create response with the original ticket/idempotency key; the Go API now exposes an authenticated `/v1/events` WebSocket with bounded per-player queues, strict upgrade validation and REST-resync-safe slow-client failure; Godot `ControlPlaneClient` can connect to the stream, consume validated events, automatically reconnect with bounded backoff, and trigger REST recovery on projection gaps and stream return | `server/domain/sync.go`, `server/api/events.go`, `server/api/service.go`, `service_test.go`, `matchmaking_state.gd` and `control_plane_client.gd` cover gap, snapshot, replay, same-revision conflict, owner-only ticket recovery, expired-ticket terminal handling, malformed restart snapshots, API-level duplicate-create replay/conflict, authenticated handshake/key rejection and targeted event delivery; durable outbox fan-out and live Godot verification remain |
 | 8.41 `[D:7.8,8.9,8.31,8.40]` | **IN PROGRESS.** Authenticated `GET /v1/assignments/{matchId}` now exposes only a validated, player-scoped assignment view; Godot `AssignmentState`/`ControlPlaneClient.fetch_assignment()` bind the response to the authenticated player, recheck expiry, preserve explicit transport/slot/join authorisation and do not connect before assignment-ready | `server/api/service.go`, `service_test.go`, `assignment_state.gd` and `test_assignment_state.gd` cover participant/identity/expiry/shape/transport boundaries and assignment recovery; signed manifest-to-player persistence, SDR relay-ticket installation, `hello` join-authorisation wiring, fencing integration and live Godot verification remain |
 | 8.42 `[D:8.22,8.23,8.24,8.40]` | **IN PROGRESS.** `RankedProfileState` and `ControlPlaneClient.fetch_ranked_profile()` expose the backend-authoritative rating/RD/volatility/games/tier/provisional/season view; matchmaking UI displays provisional/tier status without client-side rating math | `test_control_plane_client.gd` validates profile shape, numeric safety and provisional display; ranked profile fetch/display, committed revision after reconnect, abandon status and season countdown remain dependent on live auth/backend events and Godot runtime verification |
 | 8.43 `[D:8.39,8.40,8.41]` | **IN PROGRESS.** Matchmaking client now distinguishes expired queue recovery, session expiry, missing records and retryable control-plane outages; a 401 clears the in-memory token, emits `session_expired` and disables retry until a new session is configured; terminal messages remain visible and active searches are not falsely failed on transient errors | `MatchmakingState` and `ControlPlaneClient` tests cover explicit expiry and the existing terminal/retry-safe state paths; decline, version mismatch, regional outage retry UI, failed reconnect, duplicate-action recovery and live Godot verification remain |