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//! A small example of a server that accepts TCP connections and writes out
//! `Hello!` to them, afterwards closing the connection.
//!
//! You can test this out by running:
//!
//! cargo run --example hello
//!
//! and then in another terminal executing
//!
//! cargo run --example connect 127.0.0.1:8080
//!
//! You should see `Hello!` printed out and then the `nc` program will exit.
extern crate env_logger;
extern crate futures;
extern crate tokio;
extern crate tokio_io;
use std::env;
use std::net::SocketAddr;
use futures::future;
use futures::prelude::*;
use tokio::net::TcpListener;
fn main() {
env_logger::init().unwrap();
let addr = env::args().nth(1).unwrap_or("127.0.0.1:8080".to_string());
let addr = addr.parse::<SocketAddr>().unwrap();
let listener = TcpListener::bind(&addr).unwrap();
let addr = listener.local_addr().unwrap();
println!("Listening for connections on {}", addr);
let clients = listener.incoming();
let welcomes = clients.and_then(|socket| {
tokio_io::io::write_all(socket, b"Hello!\n")
});
let server = welcomes.for_each(|(_socket, _welcome)| {
Ok(())
});
future::blocking(server).wait().unwrap();
}
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