Interceptors
============

Interceptors are a powerful mechanism that can monitor, rewrite, and retry calls. Here's a simple interceptor that logs the outgoing request and the incoming response.

```java
class LoggingInterceptor implements Interceptor {
  @Override public Response intercept(Interceptor.Chain chain) throws IOException {
    Request request = chain.request();

    long t1 = System.nanoTime();

 * limitations under the License.
 */

@file:JvmName("Certificates")

package okhttp3.tls

import java.security.GeneralSecurityException
import java.security.cert.CertificateFactory
import java.security.cert.X509Certificate
import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.toByteString

/**

 * limitations under the License.
 */
@file:JvmName("HttpHeaders")

package okhttp3.internal.http

import java.io.EOFException
import java.net.HttpURLConnection.HTTP_NOT_MODIFIED
import java.net.HttpURLConnection.HTTP_NO_CONTENT
import java.util.Collections
import okhttp3.Challenge
import okhttp3.Cookie
import okhttp3.CookieJar
import okhttp3.Headers
import okhttp3.HttpUrl

# Auto detect text files and perform LF normalization
*        text=auto

*.java   text diff=java
*.html   text diff=html
*.css    text
*.js     text
*.sql    text
*.jar    binary

package okhttp3

import assertk.assertThat
import assertk.assertions.containsExactly
import assertk.assertions.isEmpty
import assertk.assertions.isEqualTo
import java.io.IOException
import java.net.InetAddress
import java.net.InetSocketAddress
import java.net.Proxy
import java.net.SocketTimeoutException
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import mockwebserver3.SocketEffect.CloseStream

 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package okhttp3.dnsoverhttps

import java.io.EOFException
import java.net.InetAddress
import java.net.UnknownHostException
import okio.Buffer
import okio.ByteString
import okio.utf8Size

/**
 * Trivial Dns Encoder/Decoder, basically ripped from Netty full implementation.
 */

 * limitations under the License.
 */
package mockwebserver3.junit4

import assertk.assertThat
import assertk.assertions.isTrue
import java.net.ConnectException
import java.util.concurrent.atomic.AtomicBoolean
import org.junit.Assert.fail
import org.junit.Test
import org.junit.runner.Description
import org.junit.runners.model.Statement

class MockWebServerRuleTest {

 */
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")
        .header("User-Agent", "OkHttp Headers.java")
        .addHeader("Accept", "application/json; q=0.5")

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
@file:Suppress("ktlint:standard:filename")

package okhttp3.curl.internal

import java.io.IOException
import okhttp3.MediaType
import okhttp3.MediaType.Companion.toMediaTypeOrNull
import okhttp3.Request
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.curl.Main

 * responses should be refused as their web socket extensions will not be understood.
 *
 * Note that [java.util.zip.Deflater] is hardcoded to use 15 bits (32 KiB) for
 * `client_max_window_bits` and [java.util.zip.Inflater] is hardcoded to use 15 bits (32 KiB) for
 * `server_max_window_bits`. This harms our ability to support these parameters:
 *