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denoland-deno/tools/hyper_hello/hyper_hello.rs
2020-01-31 04:49:13 -05:00

40 lines
1.2 KiB
Rust

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
// Adapted from https://github.com/hyperium/hyper/blob/master/examples/hello.rs
#![deny(warnings)]
use std::convert::Infallible;
use std::env;
use std::error::Error;
use hyper::service::{make_service_fn, service_fn};
use hyper::{Body, Response, Server};
type Just<T> = Result<T, Infallible>;
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
let mut port: u16 = 4544;
if let Some(custom_port) = env::args().nth(1) {
port = custom_port.parse::<u16>().unwrap();
}
let addr = ([127, 0, 0, 1], port).into();
// For every connection, we must make a `Service` to handle all
// incoming HTTP requests on said connection.
let new_service = make_service_fn(|_| {
// 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 {
Just::Ok(service_fn(|_req| async {
Just::Ok(Response::new(Body::from(&b"Hello World!"[..])))
}))
}
});
let server = Server::bind(&addr).tcp_nodelay(true).serve(new_service);
println!("Listening on http://{}", addr);
Ok(server.await?)
}