Register an _application_ interceptor by calling `addInterceptor()` on `OkHttpClient.Builder`:

```java
OkHttpClient client = new OkHttpClient.Builder()
    .addInterceptor(new LoggingInterceptor())
    .build();

Request request = new Request.Builder()
    .url("http://www.publicobject.com/helloworld.txt")

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

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.

 * limitations under the License.
 */
package okhttp3.recipes.kt

import java.io.IOException
import okhttp3.OkHttpClient
import okhttp3.Request

class AccessHeaders {
  private val client = OkHttpClient()

  fun run() {
    val request =
      Request
        .Builder()
        .url("https://api.github.com/repos/square/okhttp/issues")

 * exceptions.
 *
 * Use [newClient] as a factory for a OkHttpClient instances. These instances are specifically
 * configured for testing.
 */
class OkHttpClientTestRule :
  BeforeEachCallback,
  AfterEachCallback {
  private val clientEventsList = mutableListOf<String>()
  private var testClient: OkHttpClient? = null
  private var uncaughtException: Throwable? = null
  private lateinit var testName: String

By default, OkHttp will attempt a `MODERN_TLS` connection.  However by configuring the client connectionSpecs you can allow a fall back to `COMPATIBLE_TLS` connection if the modern configuration fails.

```java
OkHttpClient client = new OkHttpClient.Builder()
    .connectionSpecs(Arrays.asList(ConnectionSpec.MODERN_TLS, ConnectionSpec.COMPATIBLE_TLS))
    .build();
```

import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.Response
import okhttp3.internal.platform.AndroidPlatform
import okio.IOException

open class MainActivity : ComponentActivity() {
  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)

    val client = OkHttpClient()

    // Ensure we are compiling against the right variant

import java.util.concurrent.CountDownLatch
import okhttp3.Call
import okhttp3.Callback
import okhttp3.Dns
import okhttp3.HttpUrl
import okhttp3.MediaType
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.Response
import okhttp3.internal.platform.Platform

 */
package okhttp3.recipes.kt

import java.io.IOException
import okhttp3.FormBody
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.OkHttpClient
import okhttp3.Request

class PostForm {
  private val client = OkHttpClient()

  fun run() {
    val formBody =
      FormBody
        .Builder()
        .add("search", "Jurassic Park")
        .build()
    val request =
      Request(

 * limitations under the License.
 */
package okhttp3.recipes.kt

import java.io.IOException
import okhttp3.OkHttpClient
import okhttp3.Request

class SynchronousGet {
  private val client = OkHttpClient()

  fun run() {
    val request =
      Request
        .Builder()
        .url("https://publicobject.com/helloworld.txt")
        .build()

    } finally {
      cache.delete()
    }
  }

  private fun OkHttpClient.get(url: String) {
    val request = Request.Builder().url(url).build()
    val response = this.newCall(request).execute()

    response.use {
      assertEquals(200, response.code)
    }
  }

  fun buildCloudflareIp(bootstrapClient: OkHttpClient): DnsOverHttps =
    DnsOverHttps
      .Builder()