[pbs-devel] [PATCH] proxmox-backup-proxy: stop accept() loop on daemon shutdown

[Dominik Csapak]

When a task was running during a reload, the old process would still
accept connections, but drop them due to the closed receiving channel.

This resulted in sporadic connection failures in such a scenario,
depending on which process got the connection.

To fix that poll the shutdown_future too during accept, and exit the
loop then.

Signed-off-by: Dominik Csapak <d.csapak at proxmox.com>
---
 src/bin/proxmox-backup-proxy.rs | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/bin/proxmox-backup-proxy.rs b/src/bin/proxmox-backup-proxy.rs
index 744a93f9..b2badfa6 100644
--- a/src/bin/proxmox-backup-proxy.rs
+++ b/src/bin/proxmox-backup-proxy.rs
@@ -396,12 +396,15 @@ async fn accept_connection(
     let accept_counter = Arc::new(());
 
     loop {
-        let (sock, peer) = match listener.accept().await {
-            Ok(conn) => conn,
-            Err(err) => {
-                eprintln!("error accepting tcp connection: {}", err);
-                continue;
-            }
+        let (sock, peer) = select! {
+            res = listener.accept().fuse() => match res {
+                Ok(conn) => conn,
+                Err(err) => {
+                    eprintln!("error accepting tcp connection: {}", err);
+                    continue;
+                }
+            },
+            _ = proxmox_rest_server::shutdown_future().fuse() => break,
         };
 
         sock.set_nodelay(true).unwrap();
-- 
2.30.2