*   }
 * ```
 */
fun interface Interceptor {
  @Throws(IOException::class)
  fun intercept(chain: Chain): Response

  companion object {
    /**
     * Constructs an interceptor for a lambda. This compact syntax is most useful for inline
     * interceptors.
     *
     * ```kotlin
     * val interceptor = Interceptor { chain: Interceptor.Chain ->
     *     chain.proceed(chain.request())
     * }

	public fun intercept (Lokhttp3/Interceptor$Chain;)Lokhttp3/Response;
	public final fun level (Lokhttp3/logging/HttpLoggingInterceptor$Level;)V
	public final fun redactHeader (Ljava/lang/String;)V
	public final fun redactQueryParams ([Ljava/lang/String;)V
	public final fun setLevel (Lokhttp3/logging/HttpLoggingInterceptor$Level;)Lokhttp3/logging/HttpLoggingInterceptor;
}

        "network interceptor $interceptor must call proceed() exactly once",
      )
    }
  }

  @Test
  fun networkInterceptorsCannotChangeServerAddress() {
    server.enqueue(
      MockResponse
        .Builder()
        .code(500)
        .build(),
    )
    val interceptor =
      Interceptor { chain: Interceptor.Chain ->

![Interceptors Diagram](../assets/images/interceptors@2x.png)

### Application Interceptors

Interceptors are registered as either _application_ or _network_ interceptors. We'll use the `LoggingInterceptor` defined above to show the difference.

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

    // Call the next interceptor in the chain.
    val next = copy(index = index + 1, request = request)
    val interceptor = interceptors[index]

    @Suppress("USELESS_ELVIS")
    val response =
      interceptor.intercept(next) ?: throw NullPointerException(
        "interceptor $interceptor returned null",
      )

    if (exchange != null) {
      check(index + 1 >= interceptors.size || next.calls == 1) {

  @Test fun clonedInterceptorsListsAreIndependent() {
    val interceptor =
      Interceptor { chain: Interceptor.Chain ->
        chain.proceed(chain.request())
      }
    val original = clientTestRule.newClient()
    original
      .newBuilder()
      .addInterceptor(interceptor)
      .addNetworkInterceptor(interceptor)
      .build()
    assertThat(original.interceptors.size).isEqualTo(0)

import okhttp3.internal.stripBody
import okhttp3.internal.withSuppressed

/**
 * This interceptor recovers from failures and follows redirects as necessary. It may throw an
 * [IOException] if the call was canceled.
 */
class RetryAndFollowUpInterceptor : Interceptor {
  @Throws(IOException::class)
  override fun intercept(chain: Interceptor.Chain): Response {
    val realChain = chain as RealInterceptorChain
    var request = chain.request

# Module okhttp-logging-interceptor

    builder = builder.encodedFragment("")
    val httpUrl: HttpUrl = builder.build()
  }

  @Test
  fun interceptor() {
    var interceptor: Interceptor = Interceptor { TODO() }
    interceptor = Interceptor { it: Interceptor.Chain -> TODO() }
  }

  @Test
  fun interceptorChain() {
    val chain: Interceptor.Chain = newInterceptorChain()
  }

  @Test
  fun handshakeCertificates() {

Logging Interceptor
===================

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()`.