2 use std::{collections::HashMap, io, sync::Arc, time::Duration};
4 sync::{mpsc, watch, Mutex, RwLock},
9 pub(crate) struct Ack {
10 pub(crate) tx: watch::Sender<bool>,
11 pub(crate) rx: watch::Receiver<bool>,
12 pub(crate) data: Vec<u8>,
16 pub(crate) struct Chan {
17 pub(crate) acks: HashMap<u16, Ack>,
18 pub(crate) seqnum: u16,
22 pub(crate) struct RudpShare<S: UdpSender> {
24 pub(crate) remote_id: RwLock<u16>,
25 pub(crate) chans: Vec<Mutex<Chan>>,
27 pub(crate) close_tx: watch::Sender<bool>,
28 pub(crate) tasks: Mutex<JoinSet<()>>,
31 pub async fn new<S: UdpSender, R: UdpReceiver>(
36 ) -> io::Result<(RudpSender<S>, RudpReceiver<S>)> {
37 let (pkt_tx, pkt_rx) = mpsc::unbounded_channel();
38 let (close_tx, close_rx) = watch::channel(false);
40 let share = Arc::new(RudpShare {
42 remote_id: RwLock::new(remote_id),
53 tasks: Mutex::new(JoinSet::new()),
56 let mut tasks = share.tasks.lock().await;
58 let recv_share = Arc::clone(&share);
59 let recv_close = close_rx.clone();
64 let worker = RecvWorker::new(udp_rx, recv_share, recv_close, pkt_tx);
68 let resend_share = Arc::clone(&share);
69 let mut resend_close = close_rx.clone();
74 ticker!(Duration::from_millis(500), resend_close, {
75 for chan in resend_share.chans.iter() {
76 for (_, ack) in chan.lock().await.acks.iter() {
77 resend_share.send_raw(&ack.data).await.ok(); // TODO: handle error (?)
83 let ping_share = Arc::clone(&share);
84 let mut ping_close = close_rx.clone();
89 ticker!(Duration::from_secs(PING_TIMEOUT), ping_close, {
96 data: &[CtlType::Ping as u8],
108 share: Arc::clone(&share),
110 RudpReceiver { share, pkt_rx },