InetAddress.getByName("www.google.com")
    } catch (uhe: UnknownHostException) {
      throw TestAbortedException(uhe.message, uhe)
    }
  }

  fun OkHttpClient.close() {
    dispatcher.executorService.shutdown()
    connectionPool.evictAll()
  }

```java
package jcifs.internal.smb2.multichannel;

import java.util.concurrent.*;

public class ChannelFailover {
    private final ChannelManager manager;
    private final ExecutorService executor;
    private final Map<String, FailoverState> failoverStates;
    
    public ChannelFailover(ChannelManager manager) {
        this.manager = manager;

      <artifactId>okio</artifactId>
      <version>1.3.0</version>
    </dependency>
    ```

 *  **Fix: improve parallelism of async requests.** OkHttp's Dispatcher had a
    misconfigured `ExecutorService` that limited the number of worker threads.
    If you're using `Call.enqueue()` this update should significantly improve
    request concurrency.

   * I/O takes place.
   */
  @Test
  fun canceledBeforeIOSignalsOnFailure() {
    // Force requests to be executed serially.
    val dispatcher = Dispatcher(client.dispatcher.executorService)
    dispatcher.maxRequests = 1
    client =
      client
        .newBuilder()
        .dispatcher(dispatcher)
        .build()
    val requestA = Request(server.url("/a"))