Chunk Upload fails with incorrect_offset on files larger than 2GB

[itsmeted]

When calling ChunkUpload with files over 2GB, the line 499 from
dropbox-sdk-dotnet/Examples/SimpleTest/Program.cs overflows due to the following code:

UploadSessionCursor cursor = new UploadSessionCursor(sessionId, (ulong)(chunkSize * idx));

since both chunkSize and idx are ints. This line overflows the int and leads the UploadSessionAppendV2Async call to return invalid_offset. To fix this, chunkSize should be a uint, and idx should be explicitly sized as a ulong.

[greg-db]

Thanks for the report! I'll ask the team to fix that up.