[网络协议]Rust实现udp 服务端和客户端

客户端

use std::io::{self};
use std::net::UdpSocket;

fn main() {
    let client = UdpSocket::bind("127.0.0.1:8889").unwrap();

    client.connect("127.0.0.1:8080").unwrap();

    let mut buf = String::new();
    loop {
        let size = io::stdin().read_line(&mut buf).unwrap();
        println!("read: {}", size);
        let send_size = client.send(&buf.as_bytes()[..size]).unwrap();
        println!("size: {}, send: {}", size, send_size);
    }
}

use std::net::UdpSocket;
use std::str;

fn main() {
    let listener = UdpSocket::bind("127.0.0.1:8080").expect("bind address failed");

    let mut buf = [0; 128];
    loop {
        let (size, src) = listener.recv_from(&mut buf).expect("recv data failed");
        println!(
            "size: {}, src: {}, data: {}",
            size,
            src,
            str::from_utf8(&buf[..size]).expect("convert byte failed")
        );

        listener
            .send_to(&buf[..size], src)
            .expect("send data failed");
    }
}