MultipartFormDataUpload does not work as expected same as old version

[huynguyennovem]

I tried to upgrade the latest version from 1.2.1 to 3.0.0-beta.1 same as below:

• Old:

await _uploader.enqueue(
    url: url,
    files: [
        FileItem(savedDir: fileInfo.filePath, filename: fileInfo.fileName)
    ],
    headers: {
      Constant.authorization: 'Bearer ${token.token}',
      Constant.accept: 'application/json',
    },
    data: {
      Constant.fileSizeDataForm: (await file.length()).toString()
    }
)

-> Result: Upload successfully

• New:

final file = File(fileInfo.filePath + fileInfo.fileName);   // make sure the output will be: /data/..../abc.png
await _uploader.enqueue(
  MultipartFormDataUpload(
    url: url,
    files: [
      FileItem(path: file.path, field: 'file')
    ],
    headers: {
      Constant.authorization: 'Bearer ${token.token}',
      Constant.accept: 'application/json',
    },
    data: {
      Constant.fileSizeDataForm: (await file.length()).toString()
    }
  )
)

-> Result: Upload fail with error log:

E/UploadWorker(26371): exception encounteredprotocol
E/UploadWorker(26371): java.net.ProtocolException: unexpected end of stream
E/UploadWorker(26371): 	at okhttp3.internal.connection.Exchange$RequestBodySink.close(Exchange.kt:239)
E/UploadWorker(26371): 	at okio.RealBufferedSink.close(RealBufferedSink.kt:268)
E/UploadWorker(26371): 	at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.kt:60)
E/UploadWorker(26371): 	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
E/UploadWorker(26371): 	at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:34)
E/UploadWorker(26371): 	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
E/UploadWorker(26371): 	at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:95)
E/UploadWorker(26371): 	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
E/UploadWorker(26371): 	at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83)
E/UploadWorker(26371): 	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
E/UploadWorker(26371): 	at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:76)
E/UploadWorker(26371): 	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
E/UploadWorker(26371): 	at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:201)
E/UploadWorker(26371): 	at okhttp3.internal.connection.RealCall.execute(RealCall.kt:154)
E/UploadWorker(26371): 	at com.bluechilli.flutteruploader.UploadWorker.doWorkInternal(UploadWorker.java:253)
E/UploadWorker(26371): 	at com.bluechilli.flutteruploader.UploadWorker.lambda$null$0$UploadWorker(UploadWorker.java:98)
E/UploadWorker(26371): 	at com.bluechilli.flutteruploader.-$$Lambda$UploadWorker$Ho59XPh0Nv1qDklSXHWeL_QPIl0.run(Unknown Source:4)
E/UploadWorker(26371): 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
E/UploadWorker(26371): 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
E/UploadWorker(26371): 	at java.lang.Thread.run(Thread.java:764)

I have tried the solution from #2738, but the same error.
Does anyone have an idea for this?

[ened]

There seems to be a unexpected end of stream. Are you able to reproduce this in the example project?