tcp - Rustで書かれたTCPサーバーの例

Question

Rust で TCP サーバーの例を探しています。

「hello world」またはエコー サーバーのいずれかが最適です。

Answer 1

単純な TCP エコー サーバーhttps://gist.github.com/seriyps/fd6d29442e16c44ba400

#![feature(phase)]
#[phase(plugin, link)] extern crate log;
extern crate green;
extern crate rustuv;

use std::io;
use std::os;
use std::io::{Listener,Acceptor,TcpStream};

// This is for green threads. If removed, will spawn 1 OS thread per client.
#[start]
fn start(argc: int, argv: *const *const u8) -> int {
    green::start(argc, argv, rustuv::event_loop, main)
}


fn main() {
    let host = "127.0.0.1";
    let port = 8080;

    let sock = io::TcpListener::bind(host, port).unwrap();
    let mut acceptor = sock.listen();
    for stream in acceptor.incoming() {
        match stream {
            Err(e) => warn!("Accept err {}", e),
            Ok(stream) => {
                spawn(proc() {
                    debug!("{}", handle_client(stream));
                })
            }
        }
    }
}

fn handle_client(mut stream: io::TcpStream) -> io::IoResult<()> {
    info!("New client {}", stream.peer_name());
    let mut buf = [0u8, ..4096];
    loop {
        let got = try!(stream.read(buf));
        if got == 0 {
            // Is it possible? Or IoError will be raised anyway?
            break
        }
        try!(stream.write(buf.slice(0, got)));
    }
    Ok(())
}