sslSocketFactory(
              sslSocketFactory,
              handshakeCertificates.trustManager,
            )

            when (socketMode.protocol) {
              HTTP_2 -> protocols(listOf(HTTP_2, HTTP_1_1))
              HTTP_1_1 -> protocols(listOf(HTTP_1_1))
              else -> TODO()
            }

            val serverSslSocketFactory =

  @Volatile private var stream: Http2Stream? = null

  private val protocol: Protocol =
    if (Protocol.H2_PRIOR_KNOWLEDGE in client.protocols) {
      Protocol.H2_PRIOR_KNOWLEDGE
    } else {
      Protocol.HTTP_2
    }

  @Volatile
  private var canceled = false

  override fun createRequestBody(
    request: Request,
    contentLength: Long,
  ): Sink {
    return stream!!.getSink()
  }

          .build(),
      )
    assertFailsWith<ProtocolException> {
      call.execute()
    }
  }

  @Test
  fun trueDuplexClientWritesFirst() {
    enableProtocol(Protocol.HTTP_2)
    val body =
      MockStreamHandler()
        .receiveRequest("request A\n")
        .sendResponse("response B\n")
        .receiveRequest("request C\n")
        .sendResponse("response D\n")

      assertThat(it.protocol).isEqualTo(Protocol.HTTP_2)
      assertThat(it.handshake!!.tlsVersion).isEqualTo(TlsVersion.TLS_1_3)
    }

    client.connectionPool.evictAll()
    assertEquals(0, client.connectionPool.connectionCount())

    client.newCall(request).execute().use {
      assertThat(it.protocol).isEqualTo(Protocol.HTTP_2)
      assertThat(it.handshake!!.tlsVersion).isEqualTo(TlsVersion.TLS_1_3)

  fun getReturns500() {
    server.enqueue(MockResponse(code = 500))
    executeSynchronously("/")
      .assertCode(500)
      .assertNotSuccessful()
  }

  @Test
  fun get_HTTP_2() {
    enableProtocol(Protocol.HTTP_2)
    get()
  }

  @Test
  fun get_HTTPS() {
    enableTls()
    get()
  }

  @Test
  fun repeatedHeaderNames() {
    server.enqueue(
      MockResponse(

import java.security.Provider
import javax.net.ssl.SSLContext
import javax.net.ssl.SSLSocket
import okhttp3.DelegatingSSLSocket
import okhttp3.DelegatingSSLSocketFactory
import okhttp3.Protocol.HTTP_1_1
import okhttp3.Protocol.HTTP_2
import okhttp3.testing.PlatformRule
import org.conscrypt.Conscrypt
import org.junit.Assert.assertFalse
import org.junit.Assert.assertNotNull
import org.junit.Assert.assertNull
import org.junit.Assert.assertTrue

        .socketFactory(socketFactory)
        .eventListenerFactory(clientTestRule.wrap(listener))
        .build()
  }

  @Test
  fun http2OneBadHostOneGoodNoRetryOnConnectionFailure() {
    enableProtocol(Protocol.HTTP_2)

    val request = Request(server1.url("/"))

    server1.enqueue(refusedStream)
    server2.enqueue(bodyResponse)

    dns[server1.hostName] = listOf(ipv6, ipv4)

   *
   * Current versions of OkHttp do not support this protocol.
   */
  @Deprecated("OkHttp has dropped support for SPDY. Prefer {@link #HTTP_2}.")
  SPDY_3("spdy/3.1"),

  /**
   * The IETF's binary-framed protocol that includes header compression, multiplexing multiple
   * requests on the same socket, and server-push. HTTP/1.1 semantics are layered on HTTP/2.

 */
package okhttp3.internal.authenticator

import java.net.Authenticator
import java.net.InetAddress
import junit.framework.TestCase.assertNull
import okhttp3.FakeDns
import okhttp3.Protocol.HTTP_2
import okhttp3.Request
import okhttp3.Response
import okhttp3.TestValueFactory
import okhttp3.internal.RecordingAuthenticator
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Assertions.assertEquals

          .build()

      val response = client.newCall(request).execute()

      response.use {
        assertEquals(Protocol.HTTP_2, response.protocol)
        assertEquals(200, response.code)
        // see https://github.com/google/conscrypt/blob/b9463b2f74df42d85c73715a5f19e005dfb7b802/android/src/main/java/org/conscrypt/Platform.java#L613
        when {