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use super::Cors;
use chashmap::CHashMap;
use futures::{SinkExt, StreamExt};
use log::warn;
use rocket::{get, State};
use rocket_ws::{stream::DuplexStream, Channel, Message, WebSocket};
use tokio::sync::broadcast::{self, Sender};
#[derive(Default)]
pub struct PlayersyncChannels {
channels: CHashMap<String, broadcast::Sender<Message>>,
}
#[get("/playersync/<channel>")]
pub fn r_streamsync(
ws: WebSocket,
state: &State<PlayersyncChannels>,
channel: &str,
) -> Cors<Channel<'static>> {
let sender = state
.channels
.get(&channel.to_owned())
.map(|x| x.to_owned())
.unwrap_or_else(|| {
let ch = broadcast::channel(16).0;
state.channels.insert(channel.to_owned(), ch.clone());
ch
});
Cors(ws.channel(move |ws| {
Box::pin(async move {
if let Err(e) = handle_socket(sender, ws).await {
warn!("streamsync websocket error: {e:?}")
}
Ok(())
})
}))
}
async fn handle_socket(broadcast: Sender<Message>, mut ws: DuplexStream) -> anyhow::Result<()> {
let mut sub = broadcast.subscribe();
loop {
tokio::select! {
message = ws.next() => {
if let Some(message) = message {
broadcast.send(message?)?;
} else {
return Ok(())
}
},
message = sub.recv() => {
ws.send(message?).await?;
}
};
}
}
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