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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.// Adapted from https://github.com/hyperium/hyper/blob/master/examples/hello.rs
#![deny(warnings)]extern crate hyper;
use std::env;use hyper::{Body, Response, Server};use hyper::service::service_fn_ok;use hyper::rt::{self, Future};
static PHRASE: &'static [u8] = b"Hello World!";
fn main() {  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();
  // new_service is run for each connection, creating a 'service'  // to handle requests for that specific connection.  let new_service = || {      // This is the `Service` that will handle the connection.      // `service_fn_ok` is a helper to convert a function that      // returns a Response into a `Service`.      service_fn_ok(|_| {          Response::new(Body::from(PHRASE))      })  };
  let server = Server::bind(&addr)      .serve(new_service)      .map_err(|e| eprintln!("server error: {}", e));
  println!("Listening on http://{}", addr);
  rt::run(server);}