-use crate::*;
-use tokio::sync::watch;
+use super::*;
+use byteorder::{BigEndian, WriteBytesExt};
+use std::{
+ collections::HashMap,
+ io::{self, Write},
+ sync::Arc,
+};
+use tokio::sync::{watch, Mutex, RwLock};
-type AckResult = io::Result<Option<watch::Receiver<bool>>>;
+pub type Ack = Option<watch::Receiver<bool>>;
-impl<S: UdpSender> RudpSender<S> {
- pub async fn send(&self, pkt: Pkt<&[u8]>) -> AckResult {
- self.share.send(PktType::Orig, pkt).await // TODO: splits
- }
+#[derive(Debug)]
+pub(crate) struct AckWait {
+ pub(crate) tx: watch::Sender<bool>,
+ pub(crate) rx: watch::Receiver<bool>,
+ pub(crate) data: Vec<u8>,
+}
+
+#[derive(Debug)]
+pub(crate) struct Chan {
+ pub(crate) acks: HashMap<u16, AckWait>,
+ pub(crate) seqnum: u16,
+}
+
+#[derive(Debug)]
+pub struct Sender<S: UdpSender> {
+ pub(crate) id: u16,
+ pub(crate) remote_id: RwLock<u16>,
+ pub(crate) chans: [Mutex<Chan>; NUM_CHANS],
+ udp: S,
+ close: watch::Sender<bool>,
}
-impl<S: UdpSender> RudpShare<S> {
- pub async fn send(&self, tp: PktType, pkt: Pkt<&[u8]>) -> AckResult {
+impl<S: UdpSender> Sender<S> {
+ pub fn new(udp: S, close: watch::Sender<bool>, id: u16, remote_id: u16) -> Arc<Self> {
+ Arc::new(Self {
+ id,
+ remote_id: RwLock::new(remote_id),
+ udp,
+ close,
+ chans: std::array::from_fn(|_| {
+ Mutex::new(Chan {
+ acks: HashMap::new(),
+ seqnum: INIT_SEQNUM,
+ })
+ }),
+ })
+ }
+
+ pub async fn send_rudp(&self, pkt: Pkt<'_>) -> io::Result<Ack> {
+ self.send_rudp_type(PktType::Orig, pkt).await // TODO: splits
+ }
+
+ pub async fn send_rudp_type(&self, tp: PktType, pkt: Pkt<'_>) -> io::Result<Ack> {
let mut buf = Vec::with_capacity(4 + 2 + 1 + 1 + 2 + 1 + pkt.data.len());
buf.write_u32::<BigEndian>(PROTO_ID)?;
buf.write_u16::<BigEndian>(*self.remote_id.read().await)?;
- buf.write_u8(pkt.chan as u8)?;
+ buf.write_u8(pkt.chan)?;
let mut chan = self.chans[pkt.chan as usize].lock().await;
let seqnum = chan.seqnum;
}
buf.write_u8(tp as u8)?;
- buf.write(pkt.data)?;
+ buf.write_all(pkt.data.as_ref())?;
- self.send_raw(&buf).await?;
+ self.send_udp(&buf).await?;
if pkt.unrel {
Ok(None)
let (tx, rx) = watch::channel(false);
chan.acks.insert(
seqnum,
- Ack {
+ AckWait {
tx,
rx: rx.clone(),
data: buf,
}
}
- pub async fn send_raw(&self, data: &[u8]) -> io::Result<()> {
- self.udp_tx.send(data).await
- // TODO: reset ping timeout
+ pub async fn send_udp(&self, data: &[u8]) -> io::Result<()> {
+ if data.len() > UDP_PKT_SIZE {
+ panic!("splitting packets is not implemented yet");
+ }
+
+ self.udp.send(data).await
+ }
+
+ pub async fn peer_id(&self) -> u16 {
+ self.id
+ }
+
+ pub async fn is_server(&self) -> bool {
+ self.id == PeerID::Srv as u16
+ }
+
+ pub fn close(&self) {
+ self.close.send(true).ok();
}
}