Try catch not working

[mohanavel15]

I turned off the server so i can implement basic error handling but i can't seem to catch the error.

I tried

try {
  final response = await dio.post(s.uploadUrl(), data: formData);
  if (response.statusCode == 200) {
    debugPrint("Uploaded successfully!!!");
  }
} catch (e) {
  debugPrint("Upload Error!!! ${e.toString()}");
}

try {
  final response = await dio.post(s.uploadUrl(), data: formData);
  if (response.statusCode == 200) {
    debugPrint("Uploaded successfully!!!");
  }
} on Exception catch (e) {
  debugPrint("Upload Error!!! ${e.toString()}");
}

try {
  final response = await dio.post(s.uploadUrl(), data: formData);
  if (response.statusCode == 200) {
    debugPrint("Uploaded successfully!!!");
  }
} on DioException catch (e) {
  debugPrint("Upload Error!!! ${e.toString()}");
}

but still catch not working.

[mohanavel15]

any help would be greatly appreciated.

[kuhnroyal]

Which adapter? IO/HTTP2/Native?

[kuhnroyal]

This tests succeeds with the IOHttpClientAdapter:

  test('POST unreachable host', () async {
    final dio = Dio()..options.baseUrl = 'https://unreachable.host.com/';

    await expectLater(
      dio.post(
        '/post',
        data: FormData(),
        options: Options(
          contentType: Headers.textPlainContentType,
        ),
      ),
      throwsA(
        isA<DioError>().having(
          (e) => e.type,
          'type',
          equals(DioErrorType.connectionError),
        ),
      ),
    );
  });

[mohanavel15]

I'm making HTTP request. for some reason try catch not working for me. do you have discord or something. i can send you a video of that happening.

IconButton(onPressed: () async {
  final dio = Dio();
  final s = GetIt.I.get<Server>();
  try {
    final response = await dio.post(s.pingUrl());
    if (response.statusCode == 200) {
      debugPrint("Pinged successfully!!!");
    }
  } catch (e) {
    debugPrint("Ping Error!!! ${e.toString()}");
  }
}, icon: const Icon(Icons.network_ping))

Using:
Dart version:

$ dart --version
Dart SDK version: 3.2.0 (stable) (Tue Nov 14 18:26:59 2023 +0000) on "linux_x64"

Flutter version:

$ flutter --version
Flutter 3.16.0 • channel stable • https://github.com/flutter/flutter.git
Framework • revision db7ef5bf9f (5 weeks ago) • 2023-11-15 11:25:44 -0800
Engine • revision 74d16627b9
Tools • Dart 3.2.0 • DevTools 2.28.2

Dio version:

  dio: ^5.4.0

Flutter doctor:

$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.16.0, on Ubuntu 23.04 6.2.0-39-generic, locale en_US.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Chrome - develop for the web
[✓] Linux toolchain - develop for Linux desktop
[✓] Android Studio (version 2022.3)
[✓] VS Code (version 1.85.1)
[✓] Connected device (3 available)
[✓] Network resources

• No issues found!

[AlexV525]

Can you uncheck "uncaught exception" in your VS Code debugger setting? See #1869

[mohanavel15]

thanks for taking your time @kuhnroyal. it has something do with vscode.

been going through: flutter/flutter#33427
with $ flutter run try catch is working but when launched from vscode it's try catch not working.

[mohanavel15]

@AlexV525 only seen your message after sending the above message. thank you so much.