}

    fun bootstrapDnsHosts(bootstrapDnsHosts: List<InetAddress>?) =
      apply {
        this.bootstrapDnsHosts = bootstrapDnsHosts
      }

    fun bootstrapDnsHosts(vararg bootstrapDnsHosts: InetAddress): Builder = bootstrapDnsHosts(bootstrapDnsHosts.toList())

    fun systemDns(systemDns: Dns) =
      apply {
        this.systemDns = systemDns
      }
  }

      ResponseBodyStart::class,
      ResponseBodyEnd::class,
      RequestBodyEnd::class,
      ConnectionReleased::class,
      CallEnd::class,
    )
  }

  private fun enableTls(vararg protocols: Protocol) {
    client =
      client
        .newBuilder()
        .protocols(protocols.toList())
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),

 * **TlsVersion**: javaName

#### Renamed Functions

* **Headers.of()**: for symmetry with `listOf()`, `setOf()`, etc., we’ve replaced
  `Headers.of(String...)` with `headersOf(vararg String)`.

#### Extension Functions

We’ve migrated from static functions to extension functions where we think they fit.

| Java                                | Kotlin                          |

     * that we expect to be known by the remote peer. The peer already has that certificate so
     * transmitting it is unnecessary.
     */
    fun heldCertificate(
      heldCertificate: HeldCertificate,
      vararg intermediates: X509Certificate,
    ) = apply {
      this.heldCertificate = heldCertificate
      this.intermediates = arrayOf(*intermediates) // Defensive copy.
    }

    /**

      ConnectStart::class,
      SecureConnectStart::class,
    )
    assertThat(recordedEventTypes).endsWith(CallFailed::class)
  }

  private fun buildClient(
    heldCertificate: HeldCertificate?,
    vararg intermediates: X509Certificate,
  ): OkHttpClient {
    val builder =
      HandshakeCertificates
        .Builder()
        .addTrustedCertificate(serverRootCa.certificate)
    if (heldCertificate != null) {

  private fun allAscii(encoding: Encoding) =
    apply {
      for (i in 0..127) {
        encodings[i] = encoding
      }
    }

  fun override(
    encoding: Encoding,
    vararg codePoints: Int,
  ) = apply {
    for (codePoint in codePoints) {
      encodings[codePoint] = encoding
    }
  }

  fun nonPrintableAscii(encoding: Encoding) =
    apply {

    stringPropertyOrNull(projectPropertyName) ?: ""


fun Project.stringPropertyOrNull(projectPropertyName: String): String? =
    gradleProperty(projectPropertyName).orNull


fun Project.selectStringProperties(vararg propertyNames: String): Map<String, String> =
    propertyNames.mapNotNull { propertyName ->
        stringPropertyOrNull(propertyName)?.let { propertyValue ->
            propertyName to propertyValue
        }

    assertThat(readFileOrNull(getDirtyFile("k1", 0))).isNull()
  }

  private fun assertJournalEquals(vararg expectedBodyLines: String) {
    assertThat(readJournalLines()).isEqualTo(
      listOf(DiskLruCache.MAGIC, DiskLruCache.VERSION_1, "100", "2", "") + expectedBodyLines,
    )
  }

  private fun createJournal(vararg bodyLines: String) {
    createJournalWithHeader(
      DiskLruCache.MAGIC,

          .build(),
      )
    val response1 = call1.execute()
    assertThat(response1.body.string()).isEqualTo("abc")
  }

  private fun newServerSocketFactory(
    heldCertificate: HeldCertificate,
    vararg intermediates: X509Certificate,
  ): SSLSocketFactory {
    // Test setup fails on JDK9
    // java.security.KeyStoreException: Certificate chain is not valid
    // at sun.security.pkcs12.PKCS12KeyStore.setKeyEntry

    assertBytes(0xbe)
    assertThat(hpackWriter!!.headerCount).isEqualTo(2)
  }

  private fun newReader(source: Buffer): Hpack.Reader = Hpack.Reader(source, 4096)

  private fun byteStream(vararg bytes: Int): Buffer = Buffer().write(intArrayToByteArray(bytes))

  private fun checkEntry(
    entry: Header,
    name: String,
    value: String,
    size: Int,
  ) {