use std::net::{TcpListener, TcpStream};
use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};

fn handle_client(stream: TcpStream) {
    match stream.peer_addr().unwrap().ip(){
        IpAddr::V4(ip4) =>  println!("ipv4: {}", ip4),
        IpAddr::V6(ip6) => println!("ipv6: {}", ip6),
    }
}

fn main(){
    let listener = TcpListener::bind("127.0.0.1:8080").unwrap();

    for stream in listener.incoming() {
        handle_client(stream.unwrap());
    }
}