.cipherSuites(CipherSuite.TLS_RSA_WITH_RC4_128_MD5)
        .tlsVersions(TlsVersion.TLS_1_2)
        .supportsTlsExtensions(true)
        .build()
    assertThat(tlsSpec.cipherSuites!!.toList())
      .containsExactly(CipherSuite.TLS_RSA_WITH_RC4_128_MD5)
    assertThat(tlsSpec.tlsVersions!!.toList())
      .containsExactly(TlsVersion.TLS_1_2)
    assertThat(tlsSpec.supportsTlsExtensions).isTrue()
  }

  @Test

    // We are avoiding making guarantees on ordering of secondary Platforms.
    platform.assumeNotConscrypt()
    platform.assumeNotBouncyCastle()

    val client = makeClient(ConnectionSpec.RESTRICTED_TLS, TlsVersion.TLS_1_2)

    val handshake = makeRequest(client)

    assertThat(handshake.cipherSuite).isIn(*expectedModernTls12CipherSuites.toTypedArray())

    // Probably something like
    // TLS_AES_128_GCM_SHA256

    val route = factory.newRoute()
    val connectionSpecs = listOf(ConnectionSpec.MODERN_TLS, ConnectionSpec.COMPATIBLE_TLS, sslV3)
    val enabledSocketTlsVersions =
      arrayOf(
        TlsVersion.TLS_1_2,
        TlsVersion.TLS_1_1,
        TlsVersion.TLS_1_0,
      )
    var socket = createSocketWithEnabledProtocols(*enabledSocketTlsVersions)

    // MODERN_TLS is used here.
    val attempt0 =

        assertEquals(Protocol.HTTP_2, response.protocol)
        assertEquals(200, response.code)
        assertEquals("com.google.android.gms.org.conscrypt.Java8FileDescriptorSocket", socketClass)
        assertEquals(TlsVersion.TLS_1_2, response.handshake?.tlsVersion)
      }

      localhostInsecureRequest()
    } finally {
      Security.removeProvider("GmsCore_OpenSSL")
      client.close()
    }
  }

 * [javax.net.ssl.SSLSocket.setEnabledProtocols].
 */
enum class TlsVersion(
  @get:JvmName("javaName") val javaName: String,
) {
  TLS_1_3("TLSv1.3"), // 2016.
  TLS_1_2("TLSv1.2"), // 2008.
  TLS_1_1("TLSv1.1"), // 2006.
  TLS_1_0("TLSv1"), // 1999.
  SSL_3_0("SSLv3"), // 1996.
  ;

  @JvmName("-deprecated_javaName")
  @Deprecated(
    message = "moved to val",

import okhttp3.Connection
import okhttp3.ConnectionSpec
import okhttp3.EventListener
import okhttp3.Handshake
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.TlsVersion
import okhttp3.TlsVersion.TLS_1_2
import okhttp3.TlsVersion.TLS_1_3
import okhttp3.internal.SuppressSignatureCheck
import okhttp3.recipes.kt.WireSharkListenerFactory.WireSharkKeyLoggerListener.Launch

import okhttp3.Protocol.HTTP_2
import okhttp3.Provider.CONSCRYPT
import okhttp3.Provider.JSSE
import okhttp3.TlsExtensionMode.DISABLED
import okhttp3.TlsExtensionMode.STANDARD
import okhttp3.TlsVersion.TLS_1_2
import okhttp3.TlsVersion.TLS_1_3
import okhttp3.testing.PlatformRule
import okhttp3.tls.HandshakeCertificates
import okhttp3.tls.HeldCertificate
import org.junit.jupiter.api.Assumptions.assumeFalse

    .cipherSuites(*TLS13_CIPHER_SUITES.toTypedArray())
    .tlsVersions(TlsVersion.TLS_1_3)
    .build()

private val TLS_12 =
  ConnectionSpec.Builder(ConnectionSpec.RESTRICTED_TLS)
    .tlsVersions(TlsVersion.TLS_1_2)
    .build()

private fun testClient(
  urls: List<String>,
  client: OkHttpClient,
) {
  try {
    for (url in urls) {
      sendRequest(client, url)
    }
  } finally {

    @JvmField
    val RESTRICTED_TLS =
      Builder(true)
        .cipherSuites(*RESTRICTED_CIPHER_SUITES.toTypedArray())
        .tlsVersions(TlsVersion.TLS_1_3, TlsVersion.TLS_1_2)
        .supportsTlsExtensions(true)
        .build()

    /**
     * A modern TLS configuration that works on most client platforms and can connect to most servers.
     * This is OkHttp's default configuration.

    socket.supportedCipherSuites = arrayOf("TLS_A")
    socket.enabledCipherSuites = arrayOf("TLS_A")
    val connectionSpec =
      ConnectionSpec.Builder(true)
        .tlsVersions(TlsVersion.TLS_1_1, TlsVersion.TLS_1_2, TlsVersion.TLS_1_3)
        .cipherSuites("TLS_A")
        .build()
    applyConnectionSpec(connectionSpec, socket, false)
    assertArrayEquals(arrayOf("TLSv1.1", "TLSv1.2"), socket.enabledProtocols)
  }