I could use hackney directly, yes, and I have been doing it but it’s a low level API. As far as I know, and I inspected HTTPoison code pretty intensely to find a way to do it, it can’t stream request body. It can stream the response from the server, but it doesn’t allow me to stream request. I think hackney or ibrowse (or a Tesla wrapper for either) used directly could do it, however.
