async fn run_udp_server(tracker: Arc<Tracker>, socket: Arc<UdpSocket>) {
        let tracker = tracker.clone();
        let socket = socket.clone();

        let reqs = &mut ActiveRequests::default();

        // Main Waiting Loop, awaits on async [`receive_request`].
        loop {
            if let Some(h) = reqs.rb.push_overwrite(
                Self::spawn_request_processor(Self::receive_request(socket.clone()).await, tracker.clone(), socket.clone())
                    .abort_handle(),
            ) {
                if !h.is_finished() {
                    // the task is still running, lets yield and give it a chance to flush.
                    tokio::task::yield_now().await;

                    h.abort();

                    let server_socket_addr = socket.local_addr().expect("Could not get local_addr for socket.");

                    tracing::span!(
                        target: "UDP TRACKER",
                        tracing::Level::WARN, "request-aborted", server_socket_addr = %server_socket_addr);
                }
            }
        }
    }