dio post formData file and cost memory to large

[XutongGithub]

Package

dio

Version

^4.0.0

Output of flutter doctor -v

[✓] Flutter (Channel stable, 3.3.0, on macOS 12.6.1 21G217 darwin-x64, locale en-CN)
    • Flutter version 3.3.0 on channel stable at /Users/fjrb/Desktop/FZDev/flutter
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    • Framework revision ffccd96b62 (11 months ago), 2022-08-29 17:28:57 -0700
    • Engine revision 5e9e0e0aa8
    • Dart version 2.18.0
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    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
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    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)

Dart Version

2.18.0

Steps to Reproduce

var response = await _dio.post(signedUrl, cancelToken: _cancelToken, data: formData);

Expected Result

cost large memory
上传大的视频或者文件，消耗大内存，并没有释放。

Actual Result

不占用大内存，如何及时释放内存

[AlexV525]

Consider upgrade to the latest version and provide a minimal reproducible example.

[XutongGithub]

I update dio to 5.3.0 and cause another problem

SImple minimal reproducible example.
var response = await _dio.get('authinfo');

Expected Result
response is null

DioException [unknown]: null

[AlexV525]

This is not a reproducible example. Please see the migration guide if acquired.

[Lionyy]

final mpFile = await m_dio.MultipartFile.fromFile(realLocalPath, filename: encodeFileName);
final formData = m_dio.FormData.fromMap({'trim-upload-file': mpFile});
MultipartFile会直接把整个文件读到内存中。

[AlexV525]

final mpFile = await m_dio.MultipartFile.fromFile(realLocalPath, filename: encodeFileName); final formData = m_dio.FormData.fromMap({'trim-upload-file': mpFile}); MultipartFile会直接把整个文件读到内存中。

提供细节？通过什么方式判断整个文件读进了内存中？

[XutongGithub]

邮件已收到。谢谢！