#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::net::{IpAddr, Ipv4Addr, SocketAddr};
fn main() {
    let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
    assert_eq!(socket.port(), 8080);
}