val loggingEnabled = isLoggable(Level.FINE)
  if (loggingEnabled) {
    startNs = queue.taskRunner.backend.nanoTime()
    log(task, queue, "starting")
  }

  var completedNormally = false
  try {
    val result = block()
    completedNormally = true
    return result
  } finally {
    if (loggingEnabled) {
      val elapsedNs = queue.taskRunner.backend.nanoTime() - startNs
      if (completedNormally) {

```
OkHttpDebugLogging.enableHttp2()
OkHttpDebugLogging.enableTaskRunner()
```

### Activating on Android

```
$ adb shell setprop log.tag.okhttp.Http2 DEBUG
$ adb shell setprop log.tag.okhttp.TaskRunner DEBUG
$ adb logcat '*:E' 'okhttp.Http2:D' 'okhttp.TaskRunner:D'
```

### HTTP/2 Frame Logging

This logs inbound (`<<`) and outbound (`>>`) frames for HTTP/2 connections.

```

import okhttp3.OkHttpClientTestRule
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.TlsVersion
import okhttp3.brotli.Brotli
import okhttp3.dnsoverhttps.DnsOverHttps
import okhttp3.internal.concurrent.TaskRunner
import okhttp3.internal.http2.Http2
import okhttp3.internal.platform.Android10Platform
import okhttp3.internal.platform.AndroidPlatform
import okhttp3.internal.platform.Platform

HSPLokhttp3/internal/concurrent/TaskRunner$RealBackend;->nanoTime()J
HSPLokhttp3/internal/concurrent/TaskRunner$runnable$1;-><init>(Lokhttp3/internal/concurrent/TaskRunner;)V
HSPLokhttp3/internal/concurrent/TaskRunner$runnable$1;->run()V
HSPLokhttp3/internal/concurrent/TaskRunner;-><clinit>()V
HSPLokhttp3/internal/concurrent/TaskRunner;-><init>(Lokhttp3/internal/concurrent/TaskRunner$Backend;Ljava/util/logging/Logger;I)V

      }
      check(!requestBodyOpen && !socketSourceOpen && !socketSinkOpen)
    }

    if (newRoutePlanner) {
      val routePlanner =
        RealRoutePlanner(
          taskRunner = client.taskRunner,
          connectionPool = connectionPool,
          readTimeoutMillis = client.readTimeoutMillis,
          writeTimeoutMillis = client.writeTimeoutMillis,

    peer.acceptFrame() // SYN_STREAM.
    peer.play()
    val taskRunner = taskFaker.taskRunner
    val connection =
      Http2Connection
        .Builder(true, taskRunner)
        .socket(peer.openSocket().asBufferedSocket(), "peer")
        .pushObserver(IGNORE)
        .build()
    connection.start(sendConnectionPreface = false)
    val queues = taskRunner.activeQueues()
    assertThat(queues).hasSize(1)
  }

          .request(Request.Builder().url(url).build())
          .headers(responseHeaders!!)
          .protocol(Protocol.HTTP_1_1)
          .build()
      webSocket =
        RealWebSocket(
          taskFaker.taskRunner,
          response.request,
          listener,
          random!!,
          pingIntervalMillis.toLong(),
          parse(
            responseHeaders,
          ),