session count on server

.gitignore

@@ -5,6 +5,7 @@ nginx_signing.key
 overtls-daemon.sh
 project.xcworkspace/
 xcuserdata/
+.vs/
 .vscode/
 .VSCodeCounter/
 .env

src/server.rs

@@ -83,6 +83,9 @@ pub async fn run_server(config: &Config, exiting_flag: crate::CancellationToken)
         }
     };
 
+    let session_id = Arc::new(std::sync::atomic::AtomicUsize::new(0));
+    let session_count = Arc::new(std::sync::atomic::AtomicUsize::new(0));
+
     loop {
         tokio::select! {
             _ = exiting_flag.cancelled() => {
@@ -105,10 +108,17 @@ pub async fn run_server(config: &Config, exiting_flag: crate::CancellationToken)
                     Ok::<_, Error>(())
                 };
 
+                let session_id = session_id.fetch_add(1, std::sync::atomic::Ordering::SeqCst);
+                let session_count = session_count.clone();
+
                 tokio::spawn(async move {
+                    let count = session_count.fetch_add(1, std::sync::atomic::Ordering::SeqCst) + 1;
+                    log::debug!("session #{} from {} started, session count {}", session_id, peer_addr, count);
                     if let Err(e) = incoming_task.await {
                         log::debug!("{peer_addr}: {e}");
                     }
+                    let count = session_count.fetch_sub(1, std::sync::atomic::Ordering::SeqCst) - 1;
+                    log::debug!("session #{} from {} ended, session count {}", session_id, peer_addr, count);
                 });
             }
         }