existing_instance 0.1.0

Check if there is an existing instance of your application, optionally send a message
Documentation 
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use existing_instance::Msg;

fn main() {
    env_logger::init();
    // You can set this to true if you want to test nonblocking
    let nonblocking = false;
    match existing_instance::establish_endpoint("basic_example", nonblocking).unwrap() {
        existing_instance::Endpoint::New(listener) => {
            eprintln!("New instance, listening for messages");
            loop {
                if let Some(mut conn) = listener.accept() {
                    dbg!(conn.recv());
                }
            }
        }
        existing_instance::Endpoint::Existing(mut stream) => {
            eprintln!("Existing instance detected. Sending message.");
            let mut args = std::env::args().skip(1);
            let payload = match args.next().as_deref() {
                Some("num") => Msg::Num(args.next().unwrap().parse().unwrap()),
                Some(arg) => Msg::String(arg.to_string()),
                None => Msg::Nudge,
            };
            stream.send(payload);
        }
    }
}