}
  }

  @Test fun certificatePinnerEquality() {
    val clientA = clientTestRule.newClient()
    val clientB = clientTestRule.newClient()
    assertThat(clientB.certificatePinner).isEqualTo(clientA.certificatePinner)
  }

  @Test fun nullInterceptorInList() {
    val builder = OkHttpClient.Builder()
    builder.interceptors().addAll(listOf(null) as List<Interceptor>)

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

import java.io.IOException;
import java.security.cert.Certificate;
import java.util.Collections;
import java.util.Set;
import okhttp3.CertificatePinner;
import okhttp3.Interceptor;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public final class CheckHandshake {
  /** Rejects otherwise-trusted certificates. */

  @Test
  fun successfulCheckSha1Pin() {
    val certificatePinner =
      CertificatePinner
        .Builder()
        .add("example.com", "sha1/" + certA1.certificate.sha1Hash().base64())
        .build()

    certificatePinner.check("example.com", listOf(certA1.certificate))
  }

  @Test fun successfulFindMatchingPins() {
    val certificatePinner =
      CertificatePinner
        .Builder()

}

public final class okhttp3/CertificatePinner$Builder {
	public fun <init> ()V
	public final fun add (Ljava/lang/String;[Ljava/lang/String;)Lokhttp3/CertificatePinner$Builder;
	public final fun build ()Lokhttp3/CertificatePinner;
	public final fun getPins ()Ljava/util/List;
}

public final class okhttp3/CertificatePinner$Companion {

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

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

class CertificatePinning {
  private val client =
    OkHttpClient
      .Builder()
      .certificatePinner(
        CertificatePinner
          .Builder()
          .add("publicobject.com", "sha256/Vjs8r4z+80wjNcr1YKepWQboSIRi63WsWXhIMN+eWys=")

import java.io.IOException;
import java.security.cert.Certificate;
import okhttp3.CertificatePinner;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public final class CertificatePinning {
  private final OkHttpClient client = new OkHttpClient.Builder()
      .certificatePinner(
          new CertificatePinner.Builder()

}

public final class okhttp3/CertificatePinner$Builder {
	public fun <init> ()V
	public final fun add (Ljava/lang/String;[Ljava/lang/String;)Lokhttp3/CertificatePinner$Builder;
	public final fun build ()Lokhttp3/CertificatePinner;
	public final fun getPins ()Ljava/util/List;
}

public final class okhttp3/CertificatePinner$Companion {

          for (certificate in response.handshake!!.peerCertificates) {
            println(CertificatePinner.pin(certificate))
          }
        }
      }
    ```
=== ":material-language-java: Java"
    ```java
      private final OkHttpClient client = new OkHttpClient.Builder()
          .certificatePinner(
              new CertificatePinner.Builder()

#### Vars and Vals

Java doesn’t have language support for properties so developers make do with getters and setters.
Kotlin does have properties and we take advantage of them in OkHttp.

 * **Address**: certificatePinner, connectionSpecs, dns, hostnameVerifier, protocols, proxy,
   proxyAuthenticator, proxySelector, socketFactory, sslSocketFactory, url
 * **Cache**: directory

import javax.net.ssl.SSLContext
import javax.net.ssl.SSLSocketFactory
import javax.net.ssl.TrustManager
import javax.net.ssl.X509KeyManager
import javax.net.ssl.X509TrustManager
import okhttp3.CertificatePinner
import okhttp3.internal.platform.Platform
import okhttp3.internal.toImmutableList
import okhttp3.tls.internal.TlsUtil.newKeyManager
import okhttp3.tls.internal.TlsUtil.newTrustManager

/**