Hyper 0.9 is async. It does not use futures/tokio ecosystem so it's ergonomics are weak in places, particularly on the client side. I believe the tokio branch

Hyper 0.9 is async. It does not use futures/tokio ecosystem so it's ergonomics are weak in places, particularly on the client side. I believe the tokio branch of hyper is basically complete and only waiting on tokio to release.