Lib.rs

Nio

Nio is an experimental async runtime for Rust. For more information, check out this article

Nio focuses solely on providing an async runtime, It doesn't include additional utilities like. io, sync, You'll still need to rely on libraries like tokio for everything else.

Example

Here is a basic echo server example:

use futures::AsyncWriteExt;
use nio::net::TcpListener;
use std::io::Result;

#[nio::main]
async fn main() -> Result<()> {
    let mut listener = TcpListener::bind("127.0.0.1:8080").await?;
    println!("{listener:#?}");

    loop {
        let conn = listener.accept().await?;
        println!("[INCOMING] {:?}", conn.peer_addr());

        let accept = || async {
            let mut stream = conn.connect().await?;
            let mut buf = vec![0; 1024];
            while let Ok(n) = stream.read(&mut buf).await {
                if n == 0 {
                    break;
                }
                stream.write_all(&buf[..n]).await.unwrap();
            }
            Result::Ok(())
        };
        nio::spawn_pinned(accept);
    }
}