2 #![feature(cursor_remaining)]
3 #![feature(hash_drain_filter)]
8 use async_trait::async_trait;
9 use byteorder::{BigEndian, WriteBytesExt};
10 pub use client::{connect, Sender as Client};
11 use num_enum::TryFromPrimitive;
12 use std::future::Future;
18 use tokio::sync::mpsc;
20 pub const PROTO_ID: u32 = 0x4f457403;
21 pub const UDP_PKT_SIZE: usize = 512;
22 pub const NUM_CHANS: usize = 3;
23 pub const REL_BUFFER: usize = 0x8000;
24 pub const INIT_SEQNUM: u16 = 65500;
25 pub const TIMEOUT: u64 = 30;
28 pub trait UdpSender: Send + Sync + 'static {
29 async fn send(&self, data: Vec<u8>) -> io::Result<()>;
33 pub trait UdpReceiver: Send + Sync + 'static {
34 async fn recv(&self) -> io::Result<Vec<u8>>;
37 #[derive(Debug, Copy, Clone)]
44 #[derive(Debug, Copy, Clone, PartialEq, TryFromPrimitive)]
53 #[derive(Debug, Copy, Clone, PartialEq, TryFromPrimitive)]
69 pub type Error = error::Error;
70 pub type InPkt = Result<Pkt<Vec<u8>>, Error>;
76 pub struct RudpShare<S: UdpSender> {
79 pub chans: Vec<AckChan>,
84 pub struct RudpReceiver<S: UdpSender> {
85 share: Arc<RudpShare<S>>,
86 pkt_rx: mpsc::UnboundedReceiver<InPkt>,
90 pub struct RudpSender<S: UdpSender> {
91 share: Arc<RudpShare<S>>,
94 impl<S: UdpSender> RudpShare<S> {
95 pub async fn send(&self, tp: PktType, pkt: Pkt<&[u8]>) -> io::Result<()> {
96 let mut buf = Vec::with_capacity(4 + 2 + 1 + 1 + pkt.data.len());
97 buf.write_u32::<BigEndian>(PROTO_ID)?;
98 buf.write_u16::<BigEndian>(self.remote_id)?;
99 buf.write_u8(pkt.chan as u8)?;
100 buf.write_u8(tp as u8)?;
101 buf.write(pkt.data)?;
103 self.udp_tx.send(buf).await?;
109 impl<S: UdpSender> RudpSender<S> {
110 pub async fn send(&self, pkt: Pkt<&[u8]>) -> io::Result<()> {
111 self.share.send(PktType::Orig, pkt).await // TODO
115 impl<S: UdpSender> ops::Deref for RudpReceiver<S> {
116 type Target = mpsc::UnboundedReceiver<InPkt>;
118 fn deref(&self) -> &Self::Target {
123 impl<S: UdpSender> ops::DerefMut for RudpReceiver<S> {
124 fn deref_mut(&mut self) -> &mut Self::Target {
129 pub fn new<S: UdpSender, R: UdpReceiver>(
134 ) -> (RudpSender<S>, RudpReceiver<S>) {
135 let (pkt_tx, pkt_rx) = mpsc::unbounded_channel();
137 let share = Arc::new(RudpShare {
141 chans: (0..NUM_CHANS).map(|_| AckChan).collect(),
143 let recv_share = Arc::clone(&share);
146 let worker = recv_worker::RecvWorker::new(udp_rx, recv_share, pkt_tx);
152 share: Arc::clone(&share),
154 RudpReceiver { share, pkt_rx },
161 async fn main() -> io::Result<()> {
162 //println!("{}", x.deep_size_of());
163 let (tx, mut rx) = connect("127.0.0.1:30000").await?;
165 let mut mtpkt = vec![];
166 mtpkt.write_u16::<BigEndian>(2)?; // high level type
167 mtpkt.write_u8(29)?; // serialize ver
168 mtpkt.write_u16::<BigEndian>(0)?; // compression modes
169 mtpkt.write_u16::<BigEndian>(40)?; // MinProtoVer
170 mtpkt.write_u16::<BigEndian>(40)?; // MaxProtoVer
171 mtpkt.write_u16::<BigEndian>(3)?; // player name length
172 mtpkt.write(b"foo")?; // player name
181 while let Some(result) = rx.recv().await {
184 io::stdout().write(pkt.data.as_slice())?;
186 Err(err) => eprintln!("Error: {}", err),