debug: delay websocket close and detail auth error

internal/ws/handler.js

@@ -30,10 +30,12 @@ export function setupWebSocket(server, hub, limiter) {
 
     // Hand over control to 'ws' library to complete the upgrade protocol handshake.
     wss.handleUpgrade(request, socket, head, (wsConn) => {
-      // Set remote address on socket mock for later client IP queries.
-      // This ensures we can resolve client IP even after connection is upgraded.
-      wsConn._socket = wsConn._socket || {};
-      wsConn._socket.remoteAddress = ip;
+      if (wsConn._socket) {
+        Object.defineProperty(wsConn._socket, 'remoteAddress', {
+          value: ip,
+          configurable: true
+        });
+      }
 
       // Instantiate a new Client wrapper.
       // Event listeners are automatically attached in the Client constructor.