val pin: String = CertificatePinner.pin(certificate)
    val default: CertificatePinner = CertificatePinner.DEFAULT
  }

  @Test
  fun certificatePinnerBuilder() {
    val builder: CertificatePinner.Builder = CertificatePinner.Builder()
    builder.add("", "pin1", "pin2")
  }

  @Test
  fun challenge() {

            final PingResponse pingResponse = searchEngineClient.ping();
            writeJsonResponse(pingResponse.getStatus() == 0 ? HttpServletResponse.SC_OK : HttpServletResponse.SC_SERVICE_UNAVAILABLE,
                    "\"data\":" + pingResponse.getMessage());
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to process a ping request.", e);
            }

        final InputStream in1 = new ByteArrayInputStream("data1".getBytes());
        final InputStream in2 = new ByteArrayInputStream("data2".getBytes());

        // First call
        extractor.testValidateInputStream(in1);

        // Second call with different stream
        extractor.testValidateInputStream(in2);

        // Third call with null should still throw
        try {

    )
    val openAtNanos = System.nanoTime()
    newWebSocket()
    clientListener.assertOpen()
    clientListener.assertFailure(
      SocketTimeoutException::class.java,
      "sent ping but didn't receive pong within 500ms (after 0 successful ping/pongs)",
    )
    latch.countDown()
    val elapsedUntilFailure = System.nanoTime() - openAtNanos
    assertThat(TimeUnit.NANOSECONDS.toMillis(elapsedUntilFailure).toDouble())

    assertThat(response.protocol).isEqualTo(protocol)

    // Confirm a single ping was sent and received, and its reply was sent and received.
    val logs = testLogHandler.takeAll()
    assertThat(countFrames(logs, "FINE: >> 0x00000000     8 PING          "))
      .isEqualTo(1)
    assertThat(countFrames(logs, "FINE: << 0x00000000     8 PING          "))
      .isEqualTo(1)

    }
  }

  @Test fun emptyPingCallsCallback() {
    data.write("8900".decodeHex()) // Empty ping
    clientReader.processNextFrame()
    callback.assertPing(EMPTY)
  }

  @Test fun pingCallsCallback() {
    data.write("890548656c6c6f".decodeHex()) // Ping with "Hello"
    clientReader.processNextFrame()
    callback.assertPing("Hello".encodeUtf8())
  }

     * Sets the interval between HTTP/2 and web socket pings initiated by this client. Use this to
     * automatically send ping frames until either the connection fails or it is closed. This keeps
     * the connection alive and may detect connectivity failures.
     *
     * If the server does not respond to each ping with a pong within `interval`, this client will

          val cert = peerCertificates[0] as X509Certificate
          throw SSLPeerUnverifiedException(
            """
            |Hostname ${address.url.host} not verified:
            |    certificate: ${CertificatePinner.pin(cert)}
            |    DN: ${cert.subjectDN.name}
            |    subjectAltNames: ${OkHostnameVerifier.allSubjectAltNames(cert)}
            """.trimMargin(),
          )
        } else {

}

public final class okhttp3/CertificatePinner$Companion {
	public final fun pin (Ljava/security/cert/Certificate;)Ljava/lang/String;
	public final fun sha1Hash (Ljava/security/cert/X509Certificate;)Lokio/ByteString;
	public final fun sha256Hash (Ljava/security/cert/X509Certificate;)Lokio/ByteString;
}

public final class okhttp3/CertificatePinner$Pin {
	public fun <init> (Ljava/lang/String;Ljava/lang/String;)V

        });

    }

    /**
     * Pings the search engine cluster to check connectivity and health.
     *
     * @return the ping response with cluster information
     * @throws SearchEngineClientException if the ping fails
     */
    public PingResponse ping() {
        try {
            final ClusterHealthResponse response =