First push

gameserver/src/net/gateway.rs

@@ -0,0 +1,28 @@
+use anyhow::Result;
+use tokio::net::TcpListener;
+use tracing::{info_span, Instrument};
+
+use crate::{log_error, net::PlayerSession};
+
+pub async fn listen(host: &str, port: u16) -> Result<()> {
+    let listener = TcpListener::bind(format!("{host}:{port}")).await?;
+    tracing::info!("Listening at {host}:{port}");
+
+    loop {
+        let Ok((client_socket, client_addr)) = listener.accept().await else {
+            continue;
+        };
+
+        let mut session = PlayerSession::new(client_socket);
+        tokio::spawn(
+            async move {
+                log_error!(
+                    "Session from {client_addr} disconnected",
+                    format!("An error occurred while processing session ({client_addr})"),
+                    Box::pin(session.run()).await
+                );
+            }
+            .instrument(info_span!("session", addr = %client_addr)),
+        );
+    }
+}