Function bmrng::channel

pub fn channel<Req, Res>(
    buffer: usize
) -> (RequestSender<Req, Res>, RequestReceiver<Req, Res>)

Creates a bounded mpsc request-response channel for communicating between asynchronous tasks with backpressure

Panics

Panics if the buffer capacity is 0, just like the Tokio MPSC channel

Examples

#[tokio::main]
async fn main() {
    let buffer_size = 100;
    let (tx, mut rx) = bmrng::channel::<i32, i32>(buffer_size);
    tokio::spawn(async move {
        while let Ok((input, mut responder)) = rx.recv().await {
            if let Err(err) = responder.respond(input * input) {
                println!("sender dropped the response channel");
            }
        }
    });
    for i in 1..=10 {
        if let Ok(response) = tx.send_receive(i).await {
            println!("Requested {}, got {}", i, response);
            assert_eq!(response, i * i);
        }
    }
}