tokio-socketcan

SocketCAN support for tokio based on the socketcan crate.

Example echo server

use futures_util::stream::StreamExt;
use tokio_socketcan::{CANSocket, Error};

#[tokio::main]
async fn main() -> Result<(), Error> {
    let mut socket_rx = CANSocket::open("vcan0")?;
    let socket_tx = CANSocket::open("vcan0")?;
    while let Some(Ok(frame)) = socket_rx.next().await {
        socket_tx.write_frame(frame)?.await?;
    }
    Ok(())
}

Testing

Integrating the test into a CI system is non-trivial as it relies on a vcan0 virtual can device existing. Adding one to most linux systems is pretty easy with root access but attaching a vcan device to a container for CI seems difficult to find support for.

To run the tests locally, though, setup should be simple:

sudo modprobe vcan
sudo ip link add vcan0 type vcan
sudo ip link set vcan0 up
cargo test

Changelog

0.1.3

• Fixed error events being effectively delayed in delivery until the next non-error arrived.

0.1.2

• Added futures::sink::Sink implementation for the CANSocket