When using another server for file upload, is it possible to share the cookies?

I am using Tus server, but when I use the elixir implementation it is not working seamlessly, so I used another server tus node server, but there is no possible way to give users control over the files they upload, one option could be that the users enter their credentials for a second time to authenticate to the tus node server but that would be inconvenient.
I am asking for a way to integrate the two servers together, maybe I am doing it wrong