Upload fails on files larger than ChunkSize (UWP)

I use google Api with UWP project Nugets(Google.Apis 1.31.0-beta01, Google.Apis.Auth 1.31.0-beta01, Google.Apis.Drive.v3 1.30.0.1044) were installed.

I try upload file on google drive.

public async UploadAsync(string parentId, string fileName, IStorageFile inputFile, CancellationToken ct) 
{
    var body = new Google.Apis.Drive.v3.Data.File() {
        Name = fileName,
        Parents = new List<string>() { parentId }
    };
    using (var streamFile = await inputFile.OpenReadAsync()) {
        using (var stream = streamFile.AsStreamForRead()) {
            stream.Position = 0;
            var uploadRequest = _driveService.Files.Create(body, stream, inputFile.ContentType);
            uploadRequest.Fields = "id, name";
            uploadRequest.ProgressChanged += (obj) =>
            {
                    Debug.WriteLine($"sent - {obj.BytesSent}");
            };
            await uploadRequest.UploadAsync(ct);

            var file = uploadRequest.ResponseBody;
            Debug.WriteLine($"file - {file.Id}, {file.Name}");
        }
    }
}

I can only upload files < 10MB (by default). For large files(>10MB) UploadAsync doesn’t finish and obj.BytesSent always 0.

When I change uploadRequest.ChunkSize the upload limit also changes.

[chrisdunelm]

Closing as UWP is an unsupported platform. Will re-open and investigate if we add support for UWP.

[jskeet]

Okay, so this is only a problem on UWP. At the moment, UWP is an unsupported platform, but we are working on UWP support - so we’ll need to make sure this works at that point too.

10MB is the size at which the upload uses multiple chunks, so presumably the problem is somewhere there.