Function ws2can::run

pub async fn run(ws_addr: &str, can_addr: &str) -> Result<(), Box<dyn Error>>

 (in_tx   ,   in_rx )      = sync::mpsc::channel();
 (out_tx  ,   out_rx)      = sync::mpsc::channel();

-> in_tx ––> in_rx -> WS CAN <- out_tx <–– out_rx <-