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(())

}