autoconnect on fly mode (does not work yet)

app/test/transport/udp_transport_test.dart

@@ -19,7 +19,9 @@ class FakeMlrsNetworkController implements MlrsNetworkController {
   final _packetsController = StreamController<MlrsSocketPacket>.broadcast();
 
   final List<String> requestedSsidPrefixes = [];
+  final List<String?> requestedPreferredSsids = [];
   final List<({Uint8List data, String host, int port})> sentPackets = [];
+  final List<String> rememberedSsids = [];
   int releaseCount = 0;
   int openSocketCount = 0;
   int closeSocketCount = 0;
@@ -38,8 +40,9 @@ class FakeMlrsNetworkController implements MlrsNetworkController {
   void emitPacket(MlrsSocketPacket packet) => _packetsController.add(packet);
 
   @override
-  Future<void> requestNetwork(String ssidPrefix) async {
+  Future<void> requestNetwork(String ssidPrefix, {String? preferredSsid}) async {
     requestedSsidPrefixes.add(ssidPrefix);
+    requestedPreferredSsids.add(preferredSsid);
   }
 
   @override
@@ -88,12 +91,15 @@ void main() {
     String? host,
     int port = 0,
     String ssidPrefix = 'mLRS-',
+    String? rememberedSsid,
     MlrsNetworkEvent event = const MlrsNetworkAvailable(),
   }) async {
     final transport = UdpTransport(
       getHost: () async => host,
       getPort: () async => port,
       getSsidPrefix: () async => ssidPrefix,
+      getRememberedSsid: () async => rememberedSsid,
+      rememberSsid: (ssid) async => fake.rememberedSsids.add(ssid),
       networkController: fake,
     );
     final connectFuture = transport.connect();
@@ -133,6 +139,8 @@ void main() {
       getHost: () async => null,
       getPort: () async => 0,
       getSsidPrefix: () async => 'mLRS-',
+      getRememberedSsid: () async => null,
+      rememberSsid: (_) async {},
       networkController: fake,
     );
 
@@ -286,4 +294,44 @@ void main() {
 
     transport.dispose();
   });
+
+  test('passes the remembered SSID to requestNetwork for a silent reconnect',
+      () async {
+    final fake = FakeMlrsNetworkController();
+    final transport = await connectWithFake(
+      fake,
+      rememberedSsid: 'mLRS-1234',
+    );
+
+    expect(fake.requestedPreferredSsids, ['mLRS-1234']);
+
+    transport.dispose();
+  });
+
+  test('remembers the connected SSID reported by the platform', () async {
+    final fake = FakeMlrsNetworkController();
+    final transport = await connectWithFake(
+      fake,
+      event: const MlrsNetworkAvailable(ssid: 'mLRS-5678'),
+    );
+
+    expect(transport.connectedSsid, 'mLRS-5678');
+    expect(fake.rememberedSsids, ['mLRS-5678']);
+
+    transport.dispose();
+  });
+
+  test('connectedSsid is cleared on disconnect and network loss', () async {
+    final fake = FakeMlrsNetworkController();
+    final transport = await connectWithFake(
+      fake,
+      event: const MlrsNetworkAvailable(ssid: 'mLRS-5678'),
+    );
+    expect(transport.connectedSsid, 'mLRS-5678');
+
+    await transport.disconnect();
+    expect(transport.connectedSsid, isNull);
+
+    transport.dispose();
+  });
 }