srvErr <- fmt.Errorf("server: timeout waiting for connection to close")
			return
		case <-srvSPDYConn.CloseChan():
		}

		// Count pings sent by the server.
		gotPings := atomic.LoadInt64(&pingsSent)
		if gotPings < 1 {
			t.Errorf("server: failed to send any pings (check logs)")
		}
	}()

	// Set up client connection.
	clConn, err := net.Dial("tcp4", listener.Addr().String())
	if err != nil {

// whereas MaxServerConnectionAge* options are applicable on the server side only
// (as implied by the options' name...)
type Options struct {
	// After a duration of this time if the server/client doesn't see any activity it pings the peer to see if the transport is still alive.
	Time time.Duration
	// After having pinged for keepalive check, the server waits for a duration of Timeout and if no activity is seen even after that
	// the connection is closed.

  private var failed = false

  /** Total number of pings sent by this web socket. */
  private var sentPingCount = 0

  /** Total number of pings received by this web socket. */
  private var receivedPingCount = 0

  /** Total number of pongs received by this web socket. */
  private var receivedPongCount = 0

  /** True if we have sent a ping that is still awaiting a reply. */
  private var awaitingPong = false

    void stop(long lockId);

    int reservePort();

    /**
     * Pings the lock owner with the give port to start the lock releasing
     * process in the owner. May not ping the owner if:
     * - The owner was already pinged about the given lock before and the lock release is in progress
     * - The ping through the underlying socket failed
     *
     * @return true if the owner was pinged in this call
     */

     * The default value of 0 disables client-initiated pings.
     */
    fun pingInterval(
      interval: Long,
      unit: TimeUnit,
    ) = apply {
      pingInterval = checkDuration("interval", interval, unit)
    }

    /**
     * Sets the interval between HTTP/2 and web socket pings initiated by this client. Use this to

    assertThat(server.receivedPongCount()).isEqualTo(0)
    closeWebSockets(webSocket, server)
  }

  /**
   * Configure the websocket to send pings every 500 ms. Artificially prevent the server from
   * responding to pings. The client should give up when attempting to send its 2nd ping, at about
   * 1000 ms.
   */
  @Test
  fun unacknowledgedPingFailsConnection() {
    assumeNotWindows()
    client =

// a worker to respond to N pings. This is a rough measure of our RPC latency.
func BenchmarkWorkerPing(b *testing.B) {
	if race.Enabled {
		b.Skip("TODO(48504): fix and re-enable")
	}
	b.SetParallelism(1)
	w := newWorkerForTest(b)
	for i := 0; i < b.N; i++ {
		if err := w.client.ping(context.Background()); err != nil {
			b.Fatal(err)
		}
	}
}

                          type: integer
                        type:
                          description: Match on a specific ICMP type.  For example
                            a value of 8 refers to ICMP Echo Request (i.e. pings).
                          type: integer
                      type: object
                    ipVersion:
                      description: IPVersion is an optional field that restricts the

    Previously if you configured a ping interval that would cause OkHttp to send
    pings, but it did not track whether the reply pongs were received. With this
    update OkHttp requires that every ping receive a response: if it does not
    the connection will be closed and the listener's `onFailure()` method will
    be called.

    Web sockets have always been had pings, but pings on HTTP/2 connections is

                          type: integer
                        type:
                          description: Match on a specific ICMP type.  For example
                            a value of 8 refers to ICMP Echo Request (i.e. pings).
                          type: integer
                      type: object
                    ipVersion:
                      description: IPVersion is an optional field that restricts the