private final ExecutorService exec;
  private final ListenableFuture<?> future;
  private final CountDownLatch latch;

  public ListenableFutureTester(ListenableFuture<?> future) {
    this.exec = newCachedThreadPool();
    this.future = checkNotNull(future);
    this.latch = new CountDownLatch(1);
  }

  public void setUp() {
    future.addListener(
        new Runnable() {
          @Override

     * Test notification listener that captures notifications
     */
    private static class TestNotificationListener implements WitnessClient.WitnessNotificationListener {
        private final CountDownLatch notificationLatch = new CountDownLatch(1);
        private volatile WitnessNotification lastNotification;

        @Override
        public void onWitnessNotification(WitnessNotification notification) {

 */
package mockwebserver3.internal

import java.io.Closeable
import java.io.InterruptedIOException
import java.net.InetAddress
import java.net.Socket
import java.util.concurrent.CountDownLatch
import javax.net.ssl.SSLSocket
import okhttp3.Handshake
import okhttp3.Handshake.Companion.handshake
import okhttp3.internal.connection.BufferedSocket
import okhttp3.internal.platform.Platform
import okio.BufferedSink

  // methods is identical, save for method being invoked.

  /** Invokes {@code latch.}{@link CountDownLatch#await() await()} uninterruptibly. */
  @J2ktIncompatible
  @GwtIncompatible // concurrency
  public static void awaitUninterruptibly(CountDownLatch latch) {
    boolean interrupted = false;
    try {
      while (true) {
        try {
          latch.await();
          return;

    val responseDequeuedLatches =
      Arrays.asList(
        CountDownLatch(1),
        // No synchronization for the last request, which is not canceled:
        CountDownLatch(1),
        CountDownLatch(0),
      )
    val requestCanceledLatches =
      Arrays.asList(
        CountDownLatch(1),
        CountDownLatch(1),
        CountDownLatch(0),
      )

 * limitations under the License.
 */
package okhttp3.internal.publicsuffix

import java.io.IOException
import java.io.InterruptedIOException
import java.util.concurrent.CountDownLatch
import java.util.concurrent.atomic.AtomicBoolean
import okio.ByteString
import okio.Source
import okio.buffer

internal abstract class BasePublicSuffixList : PublicSuffixList {

import com.google.errorprone.annotations.concurrent.GuardedBy;
import java.util.LinkedList;
import java.util.Queue;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.logging.Level;

   * even permanently blocked.
   */
  public void testListenerDeadlock() throws InterruptedException {
    CountDownLatch failEnter = new CountDownLatch(1);
    CountDownLatch failLeave = new CountDownLatch(1);
    CountDownLatch afterStarted = new CountDownLatch(1);
    Service failRunService =
        new AbstractService() {
          @Override
          protected void doStart() {

    public void testConcurrentSessionHandling() throws Exception {
        int sessionCount = 10;
        ExecutorService executor = Executors.newFixedThreadPool(5);
        CountDownLatch latch = new CountDownLatch(sessionCount);

        for (int i = 0; i < sessionCount; i++) {
            final int sessionIndex = i;
            executor.submit(() -> {
                try {

            largeInput.append("Line number ").append(i).append("\n");
        }

        InputStream is = new ByteArrayInputStream(largeInput.toString().getBytes(StandardCharsets.UTF_8));

        CountDownLatch latch = new CountDownLatch(1);
        List<String> receivedLines = new ArrayList<>();
        Consumer<String> callback = line -> {
            receivedLines.add(line);
            if (receivedLines.size() == 5000) {