From 479cb956f11383e894ac03a48b4db7520949ae2b Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Fri, 24 Jun 2022 10:28:04 +0200
Subject: [PATCH] If we are running out of descriptors, drop an old connection
 and wait

---
 src/main.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main.rs b/src/main.rs
index ac5f98e..dde1a7c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -292,6 +292,10 @@ async fn tcp_acceptor(globals: Arc<Globals>, tcp_listener: TcpListener) -> Resul
                     continue;
                 }
                 warn!("TCP accept error: {}", e);
+                if let Some(tx_oldest) = active_connections.lock().pop_back() {
+                    let _ = tx_oldest.send(());
+                }
+                tokio::time::sleep(Duration::from_secs(1)).await;
                 continue;
             }
         };