Using firebase storage emulator in flutter gives me OS Error: Connection refused, errno = 111, address = localhost, port = 39280

Question

I am trying to use firebase emulator, it all works out, but not for the storage emulator.

Below is the code i am using, i have tried 10.0.2.2 as well but stil the same error.

void main() async {
  Bloc.observer = AppBlocObserver();

  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();

  if (USE_EMULATOR) {
    await _connectToFirebaseEmulator();
  }

  runZonedGuarded(() {
    runApp(ElectronicCupongs(appTitle: 'LunchBrejk'));
  }, (error, stacktrace) {
    FirebaseCrashlytics.instance.recordError(error, stacktrace);
  });
}

/// Connect to firebase emulator and authentication
Future _connectToFirebaseEmulator() async {
  final localHost = Platform.isAndroid ? '127.0.0.1' : 'localhost';

  // FirebaseFirestore.instance.settings = Settings(
  //     host: '$localHost:8080', sslEnabled: false, persistenceEnabled: false);

  FirebaseFirestore.instance.useFirestoreEmulator(localHost, 8080);
  FirebaseStorage.instance.useStorageEmulator(localHost, 9199);
  FirebaseFunctions.instance.useFunctionsEmulator(localHost, 5001);

  await FirebaseAuth.instance.useAuthEmulator(localHost, 9099);
}

When flutter starts i get this in the debug console.

I/flutter ( 7233): Mapping Firestore Emulator host "127.0.0.1" to "10.0.2.2".
I/flutter ( 7233): Mapping Storage Emulator host "127.0.0.1" to "10.0.2.2".
I/flutter ( 7233): Mapping Functions Emulator host "127.0.0.1" to "10.0.2.2".
I/flutter ( 7233): Mapping Auth Emulator host "127.0.0.1" to "10.0.2.2".

So it looks like the flutter is setting it up correctly. But when i try to load an image from the storage, i get.

I/flutter ( 7233): CacheManager: Failed to download file from http://localhost:9199/v0/b/default-bucket/o/restaurants%2FR81.jpg?alt=media&token=4983e466-53d1-4f4e-a1d4-09cce1b27ba1 with error:
I/flutter ( 7233): SocketException: OS Error: Connection refused, errno = 111, address = localhost, port = 39308

If i click on the link, i do see the image in my browser.

I have made sure that i can read and write by changing the storage.rules file

BTW i am using cached_network_image, perhaps it's that one that can handle the emulator?

Please put your firebase.json file here, too. Make sure you are setting the host in addition to the port. Something like this: "storage": { "host": "0.0.0.0", "port": 9199 }, — Hesam, Jan 19 '22 at 19:42
Same error here, I find there is a lack of guides on how to use firebase storage emulator. — Alex Stroescu, Jul 16 '23 at 11:54

Using firebase storage emulator in flutter gives me OS Error: Connection refused, errno = 111, address = localhost, port = 39280

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