#reactor #networking #mio #uds #std

async-net

Async networking primitives for TCP/UDP/Unix communication

18 stable releases

2.0.0 Oct 29, 2023
1.8.0 Sep 25, 2023
1.7.0 Aug 17, 2022
1.6.1 Jun 30, 2021
0.0.0 May 4, 2019

#38 in Network programming

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591,770 downloads per month
Used in 589 crates (57 directly)

Apache-2.0 OR MIT

83KB
1K SLoC

async-net

Build License Cargo Documentation

Async networking primitives for TCP/UDP/Unix communication.

This crate is an async version of std::net and std::os::unix::net.

Implementation

This crate uses async-io for async I/O and blocking for DNS lookups.

Examples

A simple UDP server that echoes messages back to the sender:

use async_net::UdpSocket;

let socket = UdpSocket::bind("127.0.0.1:8080").await?;
let mut buf = vec![0u8; 1024];

loop {
    let (n, addr) = socket.recv_from(&mut buf).await?;
    socket.send_to(&buf[..n], &addr).await?;
}

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Dependencies

~4–13MB
~158K SLoC