fix tests

ts/proxies/network-proxy/network-proxy.ts

@@ -160,6 +160,14 @@ export class NetworkProxy implements IMetricsTracker {
    * Useful for SmartProxy to determine where to forward connections
    */
   public getListeningPort(): number {
+    // If the server is running, get the actual listening port
+    if (this.httpsServer && this.httpsServer.address()) {
+      const address = this.httpsServer.address();
+      if (address && typeof address === 'object' && 'port' in address) {
+        return address.port;
+      }
+    }
+    // Fallback to configured port
     return this.options.port;
   }