- Introduced a structured and versioned `v1alpha1` response for the `statusz` endpoint. ([#134313](https://github.com/kubernetes/kubernetes/pull/134313), [@richabanker](https://github.com/richabanker)) [SIG API Machinery, Architecture, Instrumentation, Network, Node, Scheduling and Testing]

      }
    }

    server.enqueue(MockResponse(code = 201))
    server.enqueue(MockResponse(code = 204))
    server.enqueue(MockResponse(code = 204))

    val endpointUrl = server.url("/endpoint")

    var request =
      Request
        .Builder()
        .url(endpointUrl)
        .header("Content-Type", "application/xml")
        .put(ValidRequestBody())
        .build()

        // Test witness address validation
        assertNotNull(mockWitnessAddress);
        assertTrue(mockWitnessAddress.getHostAddress().matches("\\d+\\.\\d+\\.\\d+\\.\\d+"));

        // Test service endpoint formatting
        String serviceEndpoint = "ncacn_ip_tcp:" + mockWitnessAddress.getHostAddress() + "[135]";
        assertNotNull(serviceEndpoint);
        assertTrue(serviceEndpoint.contains("ncacn_ip_tcp"));

    private final ScheduledExecutorService scheduler;
    private final WitnessRpcClient rpcClient;
    
    // Witness service endpoint
    private static final String WITNESS_SERVICE_UUID = "ccd8c074-d0e5-4a40-92b4-d074faa6ba28";
    private static final int DEFAULT_WITNESS_PORT = 135;  // RPC endpoint mapper
    
    public interface WitnessNotificationListener {
        void onWitnessNotification(WitnessNotification notification);

 * <p>This class maintains a map of nodes to {@link NetworkConnections}. This class also maintains a
 * map of edges to reference nodes. The reference node is defined to be the edge's source node on
 * directed graphs, and an arbitrary endpoint of the edge on undirected graphs.
 *
 * <p>Collection-returning accessors return unmodifiable views: the view returned will reflect
 * changes to the graph (if the graph is mutable) but may not be modified by the user.
 *

 * <p>This class maintains a map of nodes to {@link NetworkConnections}. This class also maintains a
 * map of edges to reference nodes. The reference node is defined to be the edge's source node on
 * directed graphs, and an arbitrary endpoint of the edge on undirected graphs.
 *
 * <p>Collection-returning accessors return unmodifiable views: the view returned will reflect
 * changes to the graph (if the graph is mutable) but may not be modified by the user.
 *

   * by {@code endpoints}), if one is present; otherwise, returns {@code Optional.empty()}.
   *
   * <p>If this graph is directed, the endpoints must be ordered.
   *
   * @throws IllegalArgumentException if either endpoint is not an element of this graph
   * @throws IllegalArgumentException if the endpoints are unordered and the graph is directed
   * @since 27.1
   */
  Optional<V> edgeValue(EndpointPair<N> endpoints);

  /**

        UrlQueueImpl<Long> queue = new UrlQueueImpl<>();

        Long id = 999L;
        String sessionId = "crawl-session-123";
        String method = "POST";
        String url = "https://api.example.com/endpoint";
        String metaData = "{\"priority\":\"high\"}";
        String encoding = "UTF-8";
        String parentUrl = "https://api.example.com";
        Integer depth = 3;

     * <p>If this graph is directed, {@code endpoints} must be ordered.
     *
     * <p>If either or both endpoints are not already present in this graph, this method will
     * silently {@link #addNode(Object) add} each missing endpoint to the graph.
     *
     * @return this {@code Builder} object
     * @throws IllegalArgumentException if the introduction of the edge would violate {@link
     *     #allowsSelfLoops()}

### Bug or Regression

- Fixes a race condition in the iptables mode of kube-proxy in 1.27 and later
  that could result in some updates getting lost (e.g., when a service gets a
  new endpoint, the rules for the new endpoint might not be added until
  much later). ([#122815](https://github.com/kubernetes/kubernetes/pull/122815), [@wedaly](https://github.com/wedaly)) [SIG Network]