In this chapter, we covered a number of crates that help with dealing with HTTP-based REST endpoints in Rust, using Hyper and Rocket. We also looked at programmatically accessing these endpoints, using request, which is largely based on Hyper. These crates are at various stages of development. As we saw, Rocket can only run on nightly, because it uses a bunch of features that are not stable yet. We also glossed over tokio, which powers both Hyper and Rocket.
Now, tokio, being the defacto asynchronous programming library in Rust, deserves all the attention it can get. So, we will discuss the tokio stack in detail in the next chapter.