TF-3833 Fix failed to keep mobile app connect after network issue

[dab246]

Issue

#3833

Reproduce

Screen.Recording.2025-07-18.at.01.37.16.mov

Root cause

We are using the flutter_appauth library to authenticate the account, get the token and refresh the token. This flow does not use Dio with the app, which results in the flutter_appauth library's refreshToken returning a 500 error, but we ignore it because it is not a DioError. So the 401 error from the request using the expired token is still returned.

Solution

We will catch the 500 error from flutter_appauth and handle it

Dependency

• Need merged: Upgrade flutter_appauth to v9.0.1 flutter_appauth_web#1

Resolved

• Mobile:

demo.online-video-cutter.com.mp4

• Web:

demo-web.mov

[github-actions]

This PR has been deployed to https://linagora.github.io/tmail-flutter/3886.

[hoangdat]

• Still be log out when get server error

I/flutter ( 3701): [TwakeMail] [ERROR] AuthenticationClientMobile::refreshingTokensOIDC(): PlatformException(server_error, null, null, null)
I/flutter ( 3701): [TwakeMail] [ERROR] AuthenticationClientMobile::handleException: ErrorDetails = FlutterAppAuthPlatformErrorDetails(type: null,
I/flutter ( 3701):  code: null,
I/flutter ( 3701):  error: null,
I/flutter ( 3701):  errorDescription: null,
I/flutter ( 3701):  errorUri: null,
I/flutter ( 3701):  domain null,
I/flutter ( 3701): rootCauseDebugDescription: null,
I/flutter ( 3701):  errorDebugDescription: null)
I/flutter ( 3701): [TwakeMail] [ERROR] AuthorizationInterceptors::onError:Exception: PlatformException(server_error, null, null, null)
I/flutter ( 3701): *** DioError ***:
I/flutter ( 3701): uri: https://jmap.lin-saas.dev/jmap
I/flutter ( 3701): DioError [bad response]: The request returned an invalid status code of 401.
I/flutter ( 3701): Error: PlatformException(server_error, null, null, null)
I/flutter ( 3701): uri: https://jmap.lin-saas.dev/jmap
I/flutter ( 3701): statusCode: 401
I/flutter ( 3701): headers:
I/flutter ( 3701):  connection: keep-alive
I/flutter ( 3701):  access-control-allow-headers: Content-Type, Authorization, Accept
I/flutter ( 3701):  date: Wed, 30 Jul 2025 11:26:48 GMT
I/flutter ( 3701):  access-control-allow-origin: *
I/flutter ( 3701):  access-control-allow-methods: GET, POST, OPTIONS
I/flutter ( 3701):  strict-transport-security: max-age=31536000; includeSubDomains
I/flutter ( 3701):  content-length: 60
I/flutter ( 3701):  access-control-max-age: 86400
I/flutter ( 3701):  content-type: application/json
I/flutter ( 3701): 
I/flutter ( 3701): 
I/flutter ( 3701): [TwakeMail] [ERROR] RemoteExceptionThrower::throwException():error: DioError [bad response]: The request returned an invalid status code of 401.
I/flutter ( 3701): Error: PlatformException(server_error, null, null, null) | stackTrace: #0      DioMixin.fetch.<anonymous closure> (package:dio/src/dio_mixin.dart:530:7)
I/flutter ( 3701): #1      _rootRunBinary (dart:async/zone.dart:1423:47)
I/flutter ( 3701): #2      _CustomZone.runBinary (dart:async/zone.dart:1315:19)
I/flutter ( 3701): #3      _FutureListener.handleError (dart:async/future_impl.dart:178:22)
I/flutter ( 3701): #4      Future._propagateToListeners.handleError (dart:async/future_impl.dart:873:47)
I/flutter ( 3701): #5      Future._propagateToListeners (dart:async/future_impl.dart:894:13)
I/flutter ( 3701): #6      Future._completeError (dart:async/future_impl.dart:674:5)
I/flutter ( 3701): #7      _SyncCompleter._completeError (dart:async/future_impl.dart:63:12)
I/flutter ( 3701): #8      _Completer.completeError (dart:async/future_impl.dart:27:5)
I/flutter ( 3701): #9      Future.any.onError (dart:async/future.dart:633:45)
I/flutter ( 3701): #10     _rootRunBinary (dart:async/zone.dart:1423:47)
I/flutter ( 3701): #11     _CustomZone.runBinary (dart:async/zone.dart:1315
I/flutter ( 3701): [TwakeMail] [ERROR] RemoteExceptionThrower::throwException():type: DioErrorType.badResponse | response: {"type":"about:blank","status":401,"detail":"Expired token"} | error: PlatformException(server_error, null, null, null)
I/flutter ( 3701): [TwakeMail] SingleEmailController::onDataFailureViewState:failure = MarkAsEmailReadFailure
I/flutter ( 3701): [TwakeMail] [ERROR] SingleEmailController::handleUrgentExceptionOnMobile():Failure: MarkAsEmailReadFailure(ReadActions.markAsRead, BadCredentialsException(Bad credentials, null), null) | Exception: BadCredentialsException(Bad credentials, null)
I/flutter ( 3701): [TwakeMail] SingleEmailController::handleBadCredentialsException:
I/flutter ( 3701): [TwakeMail] SingleEmailController::clearDataAndGoToLoginPage:

[dab246]

• Still be log out when get server error

The error value you are testing is NULL so we can't determine the error is 500. Hardcode the exact exception and it will work.

I/flutter ( 3701): [TwakeMail] [ERROR] AuthenticationClientMobile::handleException: ErrorDetails = FlutterAppAuthPlatformErrorDetails(type: null,
I/flutter ( 3701):  code: null,
I/flutter ( 3701):  error: null,
I/flutter ( 3701):  errorDescription: null,
I/flutter ( 3701):  errorUri: null,
I/flutter ( 3701):  domain null,
I/flutter ( 3701): rootCauseDebugDescription: null,
I/flutter ( 3701):  errorDebugDescription: null)