warp_echo.rs

use hyper::server::conn::http1;
use hyper_util::{rt::TokioIo, service::TowerToHyperService};
use rmpv::Value;
use socketioxide::{
    extract::{AckSender, Data, SocketRef},
    SocketIo,
};
use tracing::info;
use tracing_subscriber::FmtSubscriber;
use warp::Filter;

async fn on_connect(socket: SocketRef, Data(data): Data<Value>) {
    info!(ns = socket.ns(), ?socket.id, "Socket.IO connected");
    socket.emit("auth", &data).ok();

    socket.on("message", async |socket: SocketRef, Data::<Value>(data)| {
        info!(?data, "Received event:");
        socket.emit("message-back", &data).ok();
    });

    socket.on(
        "message-with-ack",
        async |Data::<Value>(data), ack: AckSender| {
            info!(?data, "Received event");
            ack.send(&data).ok();
        },
    );
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    tracing::subscriber::set_global_default(FmtSubscriber::default())?;

    let warp_svc = warp::service(warp::any().map(|| "Hello, World!".to_string()));
    let (svc, io) = SocketIo::new_inner_svc(warp_svc);

    io.ns("/", on_connect);
    io.ns("/custom", on_connect);

    info!("Starting server");

    let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();

    // We start a loop to continuously accept incoming connections
    loop {
        let (stream, _) = listener.accept().await?;

        // Use an adapter to access something implementing `tokio::io` traits as if they implement
        // `hyper::rt` IO traits.
        let io = TokioIo::new(stream);
        let svc = TowerToHyperService::new(svc.clone());
        // Spawn a tokio task to serve multiple connections concurrently
        tokio::task::spawn(async move {
            // Finally, we bind the incoming connection to our `hello` service
            if let Err(err) = http1::Builder::new()
                .serve_connection(io, svc)
                .with_upgrades()
                .await
            {
                println!("Error serving connection: {:?}", err);
            }
        });
    }
}