}

  open fun buildCertificateChainCleaner(trustManager: X509TrustManager): CertificateChainCleaner =
    BasicCertificateChainCleaner(buildTrustRootIndex(trustManager))

  open fun buildTrustRootIndex(trustManager: X509TrustManager): TrustRootIndex = BasicTrustRootIndex(*trustManager.acceptedIssuers)

  open fun newSslSocketFactory(trustManager: X509TrustManager): SSLSocketFactory {
    try {
      return newSSLContext().apply {

    assertThat(a.x509TrustManager).isNotNull()

    // Multiple clients share the instances.
    val b = client.newBuilder().build()
    assertThat(b.dispatcher).isSameAs(a.dispatcher)
    assertThat(b.connectionPool).isSameAs(a.connectionPool)
    assertThat(b.sslSocketFactory).isSameAs(a.sslSocketFactory)
    assertThat(b.x509TrustManager).isSameAs(a.x509TrustManager)
  }

import java.util.logging.Logger
import javax.net.ssl.HostnameVerifier
import javax.net.ssl.SSLPeerUnverifiedException
import javax.net.ssl.SSLSocket
import javax.net.ssl.TrustManagerFactory
import javax.net.ssl.X509TrustManager
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import okhttp3.Cache
import okhttp3.Call
import okhttp3.CertificatePinner
import okhttp3.Connection
import okhttp3.DelegatingSSLSocket

  }

  /**
   * 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(

      }

      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.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

    // again with a different route.
    if (e is SSLHandshakeException) {
      // If the problem was a CertificateException from the X509TrustManager,
      // do not retry.
      if (e.cause is CertificateException) {
        return false
      }
    }
    if (e is SSLPeerUnverifiedException) {
      // e.g. a certificate pinning error.

import javax.net.ServerSocketFactory
import javax.net.ssl.SSLContext
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import javax.net.ssl.TrustManager
import javax.net.ssl.X509TrustManager
import mockwebserver3.SocketPolicy.DisconnectAfterRequest
import mockwebserver3.SocketPolicy.DisconnectAtEnd
import mockwebserver3.SocketPolicy.DisconnectAtStart
import mockwebserver3.SocketPolicy.DisconnectDuringRequestBody

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

    proxy selection process.
 *  New: `Response.byteString()` reads the entire response into memory as a byte string.
 *  New: `OkHttpClient.x509TrustManager` accessor.
 *  New: Permit [new WebSocket response codes][iana_websocket]: 1012 (Service Restart), 1013 (Try
    Again Later), and 1014 (invalid response from the upstream).