TF-2769 Fix isolate illegal data

[tddang-linagora]

Issue

• [IOS/WEB PC] Weird error msg when user upload too many attachment which almost reach the maximum range #2769

Related documents

• https://api.flutter.dev/flutter/dart-isolate/SendPort/send.html
• object is unsendable machinescream/worker_manager#86

Root cause

We are using lib/features/upload/data/network/file_uploader.dart:FileUploader:uploadAttachment:_handleUploadAttachmentAction function to handle upload file in mobile, with the help of Dio, inside a separate isolate with app's main isolate. When this Dio throw DioError exception, by any reason, this exception in turns get sent from this separate isolate to the main isolate. Inside this DioError, the RequestOptions:data is sent back out of this separate isolate, with type Stream, exactly the type we passed into this isolate by File(argsUpload.mobileFileUpload.filePath).openRead(). This type is not supported by send() function of Isolate (see above document), so this isolate throw its own exception, telling us that the type we're letting that isolate call send() is "illegal". Also, we're showing the whole stacktrace of the error if this case happens.

Log

flutter: *** Request ***
flutter: uri: https://jmap.linagora.com/upload/8203ca9793c9c26875c5c1463ad74ec448f7bc416439afce48fc1210e9f1b77a
flutter: method: POST
flutter: responseType: ResponseType.json
flutter: followRedirects: true
flutter: persistentConnection: true
flutter: connectTimeout: null
flutter: sendTimeout: null
flutter: receiveTimeout: null
flutter: receiveDataWhenStatusError: true
flutter: extra: {upload-attachment: {platform: mobile, path: /private/var/mobile/Containers/Data/Application/84C6E2FF-DF6E-42CF-BC42-95435D8C9421/tmp/com.linagora.ios.teammail-Inbox/IMG_1632.PNG, type: image/png, size: 1050986}}

flutter: *** DioError ***:
flutter: uri: https://jmap.linagora.com/upload/8203ca9793c9c26875c5c1463ad74ec448f7bc416439afce48fc1210e9f1b77a
flutter: DioError [bad response]: The request returned an invalid status code of 502.
flutter: uri: https://jmap.linagora.com/upload/8203ca9793c9c26875c5c1463ad74ec448f7bc416439afce48fc1210e9f1b77a
flutter: statusCode: 502
flutter: headers:
flutter:  connection: keep-alive
flutter:  content-type: text/html; charset=utf-8
flutter:  date: Fri, 12 Apr 2024 08:49:28 GMT
flutter:  content-length: 229
flutter:  server: nginx
flutter:  x-apisix-upstream-status: 502

Scenario

The error showing in the demos below is on purpose, to show how the error is handled. In real cases, the attachments will be uploaded as normal.

Before

Screen.Recording.2024-04-10.at.17.54.00.mov

After

Screen.Recording.2024-04-10.at.17.50.22.mov

[github-actions]

This PR has been deployed to https://linagora.github.io/tmail-flutter/2792.

[chibenwa]

Cool however can you explain why we get the error in the first place?
Network issue?

[tddang-linagora]

Cool however can you explain why we get the error in the first place? Network issue?

I would need to reproduce this bug to understand what went wrong. Will do.

[dab246]

IMO, This is not the way to solve this problem. We need to find out why it failed to upload.

[chibenwa]

IMO, This is not the way to solve this problem. We need to find out why it failed to upload.

WRONG

We need to fix BOTH

[chibenwa]

(sure I agree with you @dab246 that no error in the first place is non -gegociable however correct error management IS a must.)

[dab246]

IMO, This is not the way to solve this problem. We need to find out why it failed to upload.

WRONG

We need to fix BOTH

That's natural. Maybe you don't understand what I mean. WE NEED TO FIND THE CAUSE THAT CAUSED IT TO FAILED. As for the reason for displaying such a long error content in toast message, the above solution has been resolved. BUT EXPECTED IS NOT LIKE THAT.

[chibenwa]

Sure I 100% that's why I commented in the first place: more investigations on the root cause are also needed.

[tddang-linagora]

IMO, This is not the way to solve this problem. We need to find out why it failed to upload.

WRONG

We need to fix BOTH

@chibenwa Added log. This might not be able to resolve from the app side if this is what happened to our tester.

[dab246]

• Squash & rebase

[dab246]

Same root cause with #3129