// main.rs

use std::io::prelude::*;
use std::net::TcpListener;
use std::net::TcpStream;
use std::fs;

fn handle_client(mut stream: TcpStream) {
    let mut buffer = [0; 1024];
    stream.read(&mut buffer).unwrap();

    let response = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
    let contents = fs::read_to_string("html/index.html").unwrap();
    let response = format!("{}{}", response, contents);

    stream.write(response.as_bytes()).unwrap();
    stream.flush().unwrap();
}

fn main() {
    let listener = TcpListener::bind("127.0.0.1:3030").unwrap();
    println!("Server is listening on port 3030");

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

切图1