if (!buffer.isProbablyUtf8()) {
            logger.log("")
            logger.log("<-- END HTTP (${totalMs}ms, binary ${buffer.size}-byte body omitted)")
            return response
          }

          if (contentLength != 0L) {
            logger.log("")
            logger.log(buffer.clone().readString(charset))
          }

          logger.log(
            buildString {

===================

An [OkHttp interceptor][interceptors] which logs HTTP request and response data.

```java
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(Level.BASIC);
OkHttpClient client = new OkHttpClient.Builder()
  .addInterceptor(logging)
  .build();
```

You can change the log level at any time by calling `setLevel()`.

To log to a custom location, pass a `Logger` instance to the constructor.

      // expected
    }

    val logs = ShadowLog.getLogsForTag("testHttpLoggingInterceptor")
    assertThat(logs.map { it.type }).containsOnly(Log.INFO)
    assertThat(logs.map { it.msg }).containsExactly(
      "--> GET http://google.com/robots.txt",
      "<-- HTTP FAILED: java.net.UnknownHostException: shortcircuit",
    )
    // We should consider if these logs should retain Exceptions

          .isLessThan(logs.size)
        assertThat(logs[index++])
          .matches(Regex(prefix.pattern + regex.pattern, RegexOption.DOT_MATCHES_ALL))
      }

    fun assertNoMoreLogs() {
      assertThat(logs.size, "More messages remain: ${logs.subList(index, logs.size)}")
        .isEqualTo(index)
    }

    override fun log(message: String) {
      logs.add(message)
    }

  private fun firstFrame(
    logs: List<String>,
    type: String,
  ): String? {
    for (log in logs) {
      if (type in log) {
        return log
      }
    }
    return null
  }

  private fun countFrames(
    logs: List<String>,
    message: String,
  ): Int {
    var result = 0
    for (log in logs) {
      if (log == message) {
        result++
      }

## Version 4.9.1

_2021-01-30_

 *  Fix: Work around a crash in Android 10 and 11 that may be triggered when two threads
    concurrently close an SSL socket. This would have appeared in crash logs as
    `NullPointerException: bio == null`.


## Version 4.9.0

_2020-09-11_

**With this release, `okhttp-tls` no longer depends on Bouncy Castle and doesn't install the

import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.Response

/**
 * An OkHttp EventListener, which logs call events. Can be applied as an
 * [event listener factory][OkHttpClient.eventListenerFactory].
 *
 * The format of the logs created by this class should not be considered stable and may change
 * slightly between releases. If you need a stable logging format, use your own event listener.
 */

import okhttp3.recipes.kt.WireSharkListenerFactory.WireSharkKeyLoggerListener.Launch.Gui
import okio.ByteString.Companion.toByteString

/**
 * Logs SSL keys to a log file, allowing Wireshark to decode traffic and be examined with http2
 * filter. The approach is to hook into JSSE log events for the messages between client and server
 * during handshake, and then take the agreed masterSecret from private fields of the session.
 *

```

2. Run an Emulator using Android Studio or from command line.

```
$ emulator -no-window -no-snapshot-load @pixel5
```

2. Turn on logs with logcat

```
$ adb logcat '*:E' OkHttp:D Http2:D TestRunner:D TaskRunner:D OkHttpTest:D GnssHAL_GnssInterface:F DeviceStateChecker:F memtrack:F
...

        .execute()

    response.use {
      assertEquals(200, response.code)
      assertEquals(Protocol.HTTP_2, response.protocol)
    }

    // Only logs to the test logger above
    // Will fail if "adb shell setprop log.tag.okhttp.Http2 DEBUG" is called
    assertEquals(setOf(OkHttpTest::class.java.name), testHandler.calls.keys)
  }

  fun testCachedRequest() {
    enableTls()