import javax.net.SocketFactory
import javax.net.ssl.HostnameVerifier
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import javax.net.ssl.X509KeyManager
import javax.net.ssl.X509TrustManager
import okhttp3.logging.HttpLoggingInterceptor
import okhttp3.mockwebserver.MockResponse
import okhttp3.mockwebserver.MockWebServer
import okhttp3.mockwebserver.PushPromise
import okhttp3.mockwebserver.RecordedRequest

      }
      return prop.getProperty("version", "dev")
    }

    @Suppress("TrustAllX509TrustManager", "CustomX509TrustManager")
    private fun createInsecureTrustManager(): X509TrustManager =
      object : X509TrustManager {
        override fun checkClientTrusted(
          chain: Array<X509Certificate>,
          authType: String,
        ) {
        }

        override fun checkServerTrusted(

 */
package okhttp3.internal.platform

import java.security.NoSuchAlgorithmException
import javax.net.ssl.SSLContext
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import javax.net.ssl.X509TrustManager
import okhttp3.Protocol
import okhttp3.internal.SuppressSignatureCheck

/**
 * OpenJDK 9+ and JDK8 build 252+.
 *
 * This may also be used for Android tests with Robolectric.
 */

  }

  /**
   * Won't coalesce if we can't clean certs e.g. a dev setup.
   */
  @Test
  fun redirectWithDevSetup() {
    val trustManager: X509TrustManager =
      object : X509TrustManager {
        override fun checkClientTrusted(
          x509Certificates: Array<X509Certificate>,
          s: String,
        ) {
        }

        override fun checkServerTrusted(

  var client = OkHttpClient()

  @Test
  fun getWithCustomSocketFactory() {
    client =
      client
        .newBuilder()
        .sslSocketFactory(CustomSSLSocketFactory(client.sslSocketFactory), client.x509TrustManager!!)
        .connectionSpecs(
          listOf(
            ConnectionSpec
              .Builder(ConnectionSpec.MODERN_TLS)
              .supportsTlsExtensions(false)
              .build(),
          ),

    // ConnectionSpec: we assume it is unreachable.
    e is InterruptedIOException -> false

    // If the problem was a CertificateException from the X509TrustManager, do not retry.
    e is SSLHandshakeException && e.cause is CertificateException -> false

    // e.g. a certificate pinning error.
    e is SSLPeerUnverifiedException -> false

        }

        return sslSocket
      }
    }

    client =
      client
        .newBuilder()
        .sslSocketFactory(CustomSSLSocketFactory(client.sslSocketFactory), client.x509TrustManager!!)
        .hostnameVerifier { hostname, session ->
          val s = "hostname: $hostname peerHost:${session.peerHost}"
          Log.d("SniOverrideTest", s)
          try {

      }

      private fun trustManagerForCertificates(inputStream: InputStream): X509TrustManager {
        ... // Full source omitted. See sample.
      }
    ```
=== ":material-language-java: Java"
    ```java
      private final OkHttpClient client;

      public CustomTrust() {
        X509TrustManager trustManager;
        SSLSocketFactory sslSocketFactory;
        try {

import javax.net.ssl.HostnameVerifier
import javax.net.ssl.SSLContext
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import javax.net.ssl.X509KeyManager
import javax.net.ssl.X509TrustManager
import okhttp3.Handshake.Companion.handshake
import okhttp3.Headers.Companion.headersOf
import okhttp3.Headers.Companion.toHeaders
import okhttp3.HttpUrl.Companion.toHttpUrl

With a server that holds a certificate and a client that trusts it we have enough for an HTTPS
handshake. The best part of this example is that we don't need to make our test code insecure with a
a fake `HostnameVerifier` or `X509TrustManager`.

Certificate Authorities
-----------------------

The above example uses a self-signed certificate. This is convenient for testing but not