rust实现TCP服务器

以下是一个简单的Rust TCP服务器示例，它接受客户端连接，并将接收到的数据回显回客户端：

use std::io::{self, Read, Write};
use std::net::TcpListener;
 
fn main() -> io::Result<()> {
    let listener = TcpListener::bind("127.0.0.1:8080")?;
    println!("Listening on 127.0.0.1:8080");
 
    for stream in listener.incoming() {
        let stream = stream?;
        handle_connection(stream)?;
    }
 
    Ok(())
}
 
fn handle_connection(mut stream: TcpStream) -> io::Result<()> {
    let mut buffer = [0; 1024];
    let bytes_read = stream.read(&mut buffer)?;
 
    if bytes_read == 0 {
        return Ok(());
    }
 
    println!("Received {} bytes: {:?}", bytes_read, &buffer[..bytes_read]);
 
    // Echo the data back
    stream.write_all(&buffer[..bytes_read])?;
    stream.flush()?;
 
    Ok(())
}