feat: execute full-repo remaining parity closure plan

src/NATS.Server/Server/AcceptLoopErrorHandler.cs

@@ -0,0 +1,18 @@
+using System.Net;
+
+namespace NATS.Server.Server;
+
+public sealed class AcceptLoopErrorHandler
+{
+    private readonly Action<Exception, EndPoint?, TimeSpan> _callback;
+
+    public AcceptLoopErrorHandler(Action<Exception, EndPoint?, TimeSpan> callback)
+    {
+        _callback = callback ?? throw new ArgumentNullException(nameof(callback));
+    }
+
+    public void OnAcceptError(Exception ex, EndPoint? endpoint, TimeSpan delay)
+    {
+        _callback(ex, endpoint, delay);
+    }
+}