rust怎么查看服务器ip

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

fn main() {
    let ipv4 = IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1));
    let ipv6 = IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));

    println!("IPv4 address: {:?}", ipv4);
    println!("IPv6 address: {:?}", ipv6);
}

use std::net::TcpStream;
use std::io::{Read, Write};

fn main() {
    let mut stream = TcpStream::connect("example.com:80").unwrap();

    stream.write(b"GET / HTTP/1.0\r\n\r\n").unwrap();
    let mut response = String::new();
    stream.read_to_string(&mut response).unwrap();

    println!("Response: {}", response);
}

use reqwest::blocking::Client;

fn main() {
    let client = Client::new();
    let response = client.get("http://example.com").send().unwrap();

    println!("Response: {:?}", response);
}