2 unstable releases
0.2.0 | May 1, 2024 |
---|---|
0.1.0 | Jan 9, 2024 |
#697 in Unix APIs
24 downloads per month
Used in uds-rs
31KB
550 lines
tokio-socketcan-isotp
This library creates asynchronous wrapper around socketcan-isotp
Currently not dependent on the original, but rather on the modified of the socketcan-isotp library, which adds read_to_vec method, in order to prevent mutable borrowing of the socket, when reading.
You may experience busy waiting, or soft locks when write encounters io::Error:WouldBlock. This is due to the error in Linux Kernel, which is now solved, but the maintainer of your Linux kernel might not have shipped it yet. I tested it on the mainline Kernel 6.6.5 and everything worked correctly. If you experience mentioned errors and cannot upgrade to newer kernel, refer to the src/lib.rs file to the poll method of the IsoTpWriteFuture, where a edit is suggested that might help with your situation.
Example of basic echoing server on vcan0:
use tokio_socketcan_isotp::{IsoTpSocket, StandardId, Error};
#[tokio::main]
async fn main() -> Result<(), Error> {
let mut socket = IsoTpSocket::open(
"vcan0",
StandardId::new(0x123).expect("Invalid src id"),
StandardId::new(0x321).expect("Invalid src id")
)?;
while let Ok(packet) = socket.read_packet().await {
println!("{:?}", packet);
let rx = socket.write_packet(packet).await;
}
}
To setup vcan0 run following commands:
sudo modprobe can
sudo ip link add dev vcan0 type vcan
sudo ip link set up vcan0
Dependencies
~5–14MB
~158K SLoC