#![deny(warnings)] use std::convert::Infallible; use hyper::{Body, Request, Response, Server}; use hyper::service::{make_service_fn, service_fn}; async fn hello(_: Request) -> Result, Infallible> { Ok(Response::new(Body::from("Hello World!"))) } #[tokio::main] pub async fn main() -> Result<(), Box> { pretty_env_logger::init(); // For every connection, we must make a `Service` to handle all // incoming HTTP requests on said connection. let make_svc = make_service_fn(|_conn| { // This is the `Service` that will handle the connection. // `service_fn` is a helper to convert a function that // returns a Response into a `Service`. async { Ok::<_, Infallible>(service_fn(hello)) } }); let addr = ([127, 0, 0, 1], 3000).into(); let server = Server::bind(&addr).serve(make_svc); println!("Listening on http://{}", addr); server.await?; Ok(()) }