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|
use anyhow::Result;
use futures_util::{SinkExt, StreamExt};
use log::{debug, info, warn};
use std::{sync::Arc, time::Duration};
use tokio::{
io::{AsyncBufReadExt, AsyncWriteExt, BufReader},
net::TcpListener,
spawn,
sync::{broadcast, RwLock},
time::sleep,
};
use tokio_tungstenite::tungstenite::Message;
use undercooked::{
game::Game,
protocol::{PacketC, PacketS},
};
#[tokio::main]
async fn main() -> Result<()> {
env_logger::init_from_env("LOG");
let raw_listener = TcpListener::bind("0.0.0.0:27031").await?;
let ws_listener = TcpListener::bind("0.0.0.0:27032").await?;
info!(
"listening for line-based tcp on {}",
raw_listener.local_addr()?
);
info!("listening for websockets on {}", ws_listener.local_addr()?);
let game = Arc::new(RwLock::new(Game::new()));
let (tx, rx) = broadcast::channel::<PacketC>(1024);
{
let game = game.clone();
spawn(async move {
loop {
{
let mut g = game.write().await;
while let Some(p) = g.packet_out() {
debug!("-> {p:?}");
let _ = tx.send(p);
}
}
sleep(Duration::from_millis(20)).await;
}
});
}
for id in 0.. {
tokio::select! {
r = raw_listener.accept() => {
let (sock, addr) = r?;
let (read, mut write) = sock.into_split();
let game = game.clone();
let mut rx = rx.resubscribe();
info!("{addr} connected");
spawn(async move {
write
.write_all(serde_json::to_string(&PacketC::Joined { id }).unwrap().as_bytes())
.await?;
write.write_all(b"\n").await?;
while let Ok(packet) = rx.recv().await {
write
.write_all(serde_json::to_string(&packet).unwrap().as_bytes())
.await?;
write.write_all(b"\n").await?;
}
Ok::<_, anyhow::Error>(())
});
spawn(async move {
let mut read = BufReader::new(read).lines();
while let Ok(Some(line)) = read.next_line().await {
let Ok(packet): Result<PacketS, _> = serde_json::from_str(&line) else {
warn!("invalid json over tcp");
break
};
debug!("<- {id} {packet:?}");
if let Err(e) = game.write().await.packet_in(id, packet) {
warn!("client error: {e}");
}
}
});
}
r = ws_listener.accept() => {
let (sock, addr) = r?;
let sock = tokio_tungstenite::accept_async(sock).await?;
let (mut write, mut read) = sock.split();
let game = game.clone();
let mut rx = rx.resubscribe();
info!("{addr} connected via ws");
spawn(async move {
if let Err(e) = write.send(tokio_tungstenite::tungstenite::Message::Text(
serde_json::to_string(&PacketC::Joined { id }).unwrap(),
)).await {
warn!("ws error on init: {e}");
return;
}
while let Ok(packet) = rx.recv().await {
if let Err(e) = write.send(tokio_tungstenite::tungstenite::Message::Text(
serde_json::to_string(&packet).unwrap(),
)).await {
warn!("ws error: {e}");
break;
}
}
});
spawn(async move {
while let Some(Ok(message)) = read.next().await {
match message {
Message::Text(line) => {
let Ok(packet): Result<PacketS, _> = serde_json::from_str(&line) else {
warn!("invalid json over ws");
break
};
debug!("<- {id} {packet:?}");
if let Err(e) = game.write().await.packet_in(id, packet) {
warn!("client error: {e}");
}
},
Message::Close(_) => break,
_ => (),
}
}
});
}
}
}
Ok(())
}
|
