allow ping before RemAck

src/client.rs

@@ -346,8 +346,11 @@ pub async fn handler(
         return Ok(());
    };
 
+    let notify_at = Instant::now();
+
+    loop {
         let recv = timeout(
-        CALL_ACK_TIMEOUT,
+            CALL_ACK_TIMEOUT.saturating_sub(notify_at.elapsed()),
             packet.recv_into_cancelation_safe(&mut reader),
         );
 
@@ -358,6 +361,7 @@ pub async fn handler(
         res?;
 
         match packet.kind() {
+            PacketKind::Ping => {}
             PacketKind::End | PacketKind::Reject => {
                 port_handler.lock().await.start_rejector(
                     port,
@@ -368,7 +372,7 @@ pub async fn handler(
                     packet,
                 );
 
-            Ok(())
+                return Ok(());
             }
 
             PacketKind::RemAck => {
@@ -380,9 +384,12 @@ pub async fn handler(
                     client,
                     &mut caller,
                 )
-            .await
+                .await?;
+
+                return Ok(());
             }
 
-        kind => Err(eyre!("unexpected packet: {:?}", kind)),
+            kind => return Err(eyre!("unexpected packet: {:?}", kind)),
+        }
     }
 }