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|
use super::PktInfo;
use delegate::delegate;
use mt_ser::{DefCfg, MtDeserialize, MtSerialize};
use std::{borrow::Cow, io};
use thiserror::Error;
pub trait Remote {
type UdpSender: mt_rudp::UdpSender;
type PktFrom: MtDeserialize;
type PktTo: MtSerialize + PktInfo;
}
#[cfg(feature = "client")]
pub struct RemoteSrv;
#[cfg(feature = "client")]
impl Remote for RemoteSrv {
type UdpSender = mt_rudp::ToSrv;
type PktTo = crate::ToSrvPkt;
type PktFrom = crate::ToCltPkt;
}
#[cfg(feature = "client")]
pub async fn connect(addr: &str) -> io::Result<(MtSender<RemoteSrv>, MtReceiver<RemoteSrv>)> {
let (tx, rx) = mt_rudp::connect(addr).await?;
Ok((MtSender(tx), MtReceiver(rx)))
}
/*
#[cfg(feature = "server")]
pub struct RemoteClt;
#[cfg(feature = "server")]
impl Remote for RemoteClt {
type Sender = mt_rudp::ToClt;
type To = crate::ToCltPkt;
type From = crate::ToSrvPkt;
}
*/
#[derive(Debug)]
pub struct MtSender<R: Remote>(pub mt_rudp::RudpSender<R::UdpSender>);
#[derive(Debug)]
pub struct MtReceiver<R: Remote>(pub mt_rudp::RudpReceiver<R::UdpSender>);
#[derive(Error, Debug)]
pub enum RecvError {
#[error("connection error: {0}")]
ConnError(#[from] mt_rudp::Error),
#[error("deserialize error: {0}")]
DeserializeError(#[from] mt_ser::DeserializeError),
}
#[derive(Error, Debug)]
pub enum SendError {
#[error("connection error: {0}")]
ConnError(#[from] io::Error),
#[error("serialize error: {0}")]
SerializeError(#[from] mt_ser::SerializeError),
}
macro_rules! impl_delegate {
($T:ident) => {
impl<R: Remote> $T<R> {
delegate! {
to self.0 {
pub async fn peer_id(&self) -> u16;
pub async fn is_server(&self) -> bool;
pub async fn close(self);
}
}
}
};
}
impl_delegate!(MtSender);
impl_delegate!(MtReceiver);
impl<R: Remote> MtReceiver<R> {
pub async fn recv(&mut self) -> Option<Result<R::PktFrom, RecvError>> {
self.0.recv().await.map(|res| {
res.map_err(RecvError::from).and_then(|pkt| {
// TODO: warn on trailing data
R::PktFrom::mt_deserialize::<DefCfg>(&mut io::Cursor::new(pkt.data))
.map_err(RecvError::from)
})
})
}
}
impl<R: Remote> MtSender<R> {
pub async fn send(&self, pkt: &R::PktTo) -> Result<(), SendError> {
let mut writer = Vec::new();
pkt.mt_serialize::<DefCfg>(&mut writer)?;
let (chan, unrel) = pkt.pkt_info();
self.0
.send(mt_rudp::Pkt {
chan,
unrel,
data: Cow::Borrowed(&writer),
})
.await?;
Ok(())
}
}
// derive(Clone) adds unwanted trait bound to R
impl<R: Remote> Clone for MtSender<R> {
fn clone(&self) -> Self {
Self(self.0.clone())
}
}
|
