newState and oldState on ConnectionStateUpdatedEvent

lib/src/core/engine.dart

@@ -592,7 +592,7 @@ class Engine extends Disposable with EventsEmittable<EngineEvent> {
       events.emit(event);
     })
     ..on<SignalConnectionStateUpdatedEvent>((event) async {
-      if (event.connectionState == ConnectionState.disconnected) {
+      if (event.newState == ConnectionState.disconnected) {
         await _onDisconnected(DisconnectReason.signal);
       }
       // Relay to Room

lib/src/core/signal_client.dart

@@ -152,10 +152,12 @@ class SignalClient extends Disposable with EventsEmittable<SignalEvent> {
     bool didReconnect = _connectionState == ConnectionState.reconnecting &&
         newValue == ConnectionState.connected;
 
+    final oldState = _connectionState;
     _connectionState = newValue;
 
     events.emit(SignalConnectionStateUpdatedEvent(
-      connectionState: _connectionState,
+      newState: _connectionState,
+      oldState: oldState,
       didReconnect: didReconnect,
     ));
   }