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

Add the following dependency to your Cargo.toml:

[dependencies]
nio = "0.0.1"

Here is a basic echo server example:

use nio::net::TcpListener;
use std::io;
use tokio::io::{AsyncReadExt, AsyncWriteExt};

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

        nio::spawn(async move {
            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();
            }
        });
    }
}