async-task-group 0.2.1

Manage groups of `async-std` tasks as a single unit.
Documentation 
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//! TCP echo server.
//!
//! To send messages, do:
//!
//! ```sh
//! $ nc localhost 8080
//! ```

use async_std::io;
use async_std::net::{TcpListener, TcpStream};
use async_std::prelude::*;
use async_std::task;

async fn process(stream: TcpStream) -> io::Result<()> {
    println!("Accepted from: {}", stream.peer_addr()?);

    let mut reader = stream.clone();
    let mut writer = stream;
    io::copy(&mut reader, &mut writer).await?;

    Ok(())
}

fn main() -> io::Result<()> {
    task::block_on(async {
        let listener = TcpListener::bind("127.0.0.1:8080").await?;
        println!("Listening on {}", listener.local_addr()?);

        let handle = async_task_group::group(|group| async move {
            let mut incoming = listener.incoming();
            while let Some(stream) = incoming.next().await {
                let stream = stream?;
                group.spawn(async move { process(stream).await });
            }
            Ok(group)
        });
        handle.await?;
        Ok(())
    })
}