33 lines
936 B
Rust
33 lines
936 B
Rust
|
use tokio::net::TcpListener;
|
||
|
|
use tokio::io::{AsyncReadExt, AsyncWriteExt};
|
||
|
|
|
||
|
|
#[tokio::main]
|
||
|
|
async fn main() -> Result<(), Box<dyn std::error::Error>> {
|
||
|
|
let listener = TcpListener::bind("127.0.0.1:4040").await?;
|
||
|
|
|
||
|
|
loop {
|
||
|
|
let (mut socket, _) = listener.accept().await?;
|
||
|
|
|
||
|
|
tokio::spawn(async move {
|
||
|
|
let mut buf = [0; 1024];
|
||
|
|
|
||
|
|
loop {
|
||
|
|
|
||
|
|
let n = match socket.read(&mut buf).await {
|
||
|
|
Ok(n) if n == 0 => return,
|
||
|
|
Ok(n) => n,
|
||
|
|
Err(e) => {
|
||
|
|
eprintln!("failed to read from socket; err = {:?}", e);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
if let Err(e) = socket.write_all(&buf[0..n]).await {
|
||
|
|
eprintln!("failed to write to socket; err = {:?}", e);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|