writerClosed = true
    }
  }

  @Throws(IOException::class)
  private fun writeControlFrame(
    opcode: Int,
    payload: ByteString,
  ) {
    if (writerClosed) throw IOException("closed")

    val length = payload.size
    require(length <= PAYLOAD_BYTE_MAX) {
      "Payload size must be less than or equal to $PAYLOAD_BYTE_MAX"
    }

    val b0 = B0_FLAG_FIN or opcode

  Closer(Suppressor suppressor) {
    this.suppressor = checkNotNull(suppressor); // checkNotNull to satisfy null tests
  }

  /**
   * Registers the given {@code closeable} to be closed when this {@code Closer} is {@linkplain
   * #close closed}.
   *
   * @return the given {@code closeable}
   */
  // close. this word no longer has any meaning to me.
  @CanIgnoreReturnValue
  @ParametricNullness

	// return 503 server closed error, consider it as an offline node
	case strings.Contains(err.Error(), http.ErrServerClosed.Error()):
		return true
	// Corner case, the server closed the connection with a keep-alive timeout
	// some requests are not retried internally, such as POST request with written body
	case strings.Contains(err.Error(), "server closed idle connection"):
		return true
	}

	return false

      with:
        repo-token: ${{ secrets.GITHUB_TOKEN }}
        stale-issue-message: "This issue has been automatically marked as stale because it has been open 360 days with no activity. Remove stale label or comment or this will be closed in 180 days"
        days-before-stale: 360
        days-before-close: 180
        stale-issue-label: "status:stale"
        exempt-issue-labels: 'type:feature,type:with reproduction steps,type:has pull request'

     * @return the handle
     */
    protected SmbPipeHandleImpl getHandle () {
        return this.handle;
    }


    @Override
    public void close () {
        // ignore, the shared file descriptor is closed by the pipe handle
    }

    ]),
    row.new('Network')
    + row.withPanels([
      panels.timeSeries.connections('Connections', queries.connections, 'Connections opened and closed per instance'),
      panels.timeSeries.bytesRate('Bytes Transmitted', queries.bytes, 'Bytes sent and received per instance'),
      panels.timeSeries.dns('DNS Request', queries.dns, 'DNS queries received per instance'),
    ]),

  ...

   */
  open fun onClosed(
    webSocket: WebSocket,
    code: Int,
    reason: String,
  ) {
  }

  /**
   * Invoked when a web socket has been closed due to an error reading from or writing to the
   * network. Both outgoing and incoming messages may have been lost. No further calls to this
   * listener will be made.
   */
  open fun onFailure(
    webSocket: WebSocket,

	netns2 := p.UpsertPodCacheWithNetns(string(pod.UID), wl2)
	if netns2 != ns {
		t.Fatalf("Expected the original Netns for the same uid, got %p and %p", netns2, ns)
	}
	if !ns2.closed.Load() {
		t.Fatal("Expected the second Netns to be closed")
	}
}

func TestDoubleTake(t *testing.T) {
	p := newPodNetnsCache(openNsTestOverride)

	pod := &corev1.Pod{ObjectMeta: metav1.ObjectMeta{UID: "testUID"}}

  private var taskQueue = taskRunner.newQueue()

  /** Names this web socket for observability and debugging. */
  private var name: String? = null

  /** The streams held by this web socket. This is closed when both reader and writer are closed. */
  private var streams: Streams? = null

  /** Outgoing pongs in the order they should be written. */
  private val pongQueue = ArrayDeque<ByteString>()