upload non seekable streams in minio using dotnet client

Question

I create streams on the fly and I want to upload then to a minio storage. However PutObjectAsync expects the length of the stream, which is unknown, as the stream is non seekable. Is there any workaround about this ? Of course I could read my stream fully into a memorystream and use that instead, but beacause of the size of the streams (several gigaBs) that is not an option.