Moving to TCPStream, Bye Tokio- Adventure in Rust

My first thought, they did the right thing.

Just don't read more into that than what I said. Async network programming is hard. And while I think that tokio's examples could use a little bit of help on simplifying, clarifying, and using the same terminology across them, that wouldn't make this a simple subject. Since the authors are just learning it definitely makes sense to use the stable, well-understood APIs that have decades of tutorials on how to use them (well not in rust, but bsd-ish sockets in general).