* HTTPS.
   */
  fun handshake(): Handshake?

  /**
   * Returns the protocol negotiated by this connection, or [Protocol.HTTP_1_1] if no protocol
   * has been negotiated. This method returns [Protocol.HTTP_1_1] even if the remote peer is using
   * [Protocol.HTTP_1_0].
   */
  fun protocol(): Protocol

      "ConnectionReleased",
    )
  }

  @Test
  @Throws(IOException::class)
  fun secondCallEventSequence() {
    enableTls()
    server!!.protocols = listOf(Protocol.HTTP_2, Protocol.HTTP_1_1)
    server!!.enqueue(MockResponse())
    server!!.enqueue(MockResponse())

    client
      .newCall(Request(server!!.url("/")))
      .execute()
      .close()

    client

  ): Response =
    Response
      .Builder()
      .request(
        Request
          .Builder()
          .url("https://example.com/")
          .build(),
      ).protocol(Protocol.HTTP_1_1)
      .code(code)
      .message("OK")
      .body(responseBody)
      .apply { fn() }
      .build()

import okhttp3.DelegatingServerSocketFactory
import okhttp3.DelegatingSocketFactory
import okhttp3.MediaType
import okhttp3.OkHttpClient
import okhttp3.OkHttpClientTestRule
import okhttp3.Protocol.HTTP_1_1
import okhttp3.RecordingEventListener
import okhttp3.Request
import okhttp3.RequestBody
import okhttp3.SimpleProvider
import okhttp3.internal.http.CancelTest.CancelMode.CANCEL

      Request
        .Builder()
        .url("https://localhost:1/")
        .build()
    val interceptorResponse =
      Response
        .Builder()
        .request(request)
        .protocol(Protocol.HTTP_1_1)
        .code(200)
        .message("Intercepted!")
        .body("abc".toResponseBody("text/plain; charset=utf-8".toMediaType()))
        .build()
    client =
      client
        .newBuilder()

      .assertCode(200)
  }

  private fun enableProtocol(protocol: Protocol) {
    enableTls()
    client =
      client
        .newBuilder()
        .protocols(listOf(protocol, Protocol.HTTP_1_1))
        .build()
    server1.protocols = client.protocols
    server2.protocols = client.protocols
  }

  private fun enableTls() {
    client =
      client
        .newBuilder()

    mockWebServer.setServerSocketFactory(ServerSocketFactory.getDefault())
    mockWebServer.setBodyLimit(0L)
    mockWebServer.setProtocolNegotiationEnabled(false)
    mockWebServer.setProtocols(listOf(Protocol.HTTP_1_1))
    var requestCount: Int = mockWebServer.getRequestCount()
  }

  @Test @Disabled
  fun multipartBody() {
    val multipartBody: MultipartBody = MultipartBody.Builder().build()

    listOf(
      ConnectionSpec.MODERN_TLS,
      ConnectionSpec.COMPATIBLE_TLS,
      ConnectionSpec.CLEARTEXT,
    )
  var protocols: List<Protocol> =
    listOf(
      Protocol.HTTP_1_1,
    )
  var handshakeCertificates: HandshakeCertificates = localhost()
  var sslSocketFactory: SSLSocketFactory? = handshakeCertificates.sslSocketFactory()

  private class ClosableCall : FailingCall() {
    private val response =
      Response
        .Builder()
        .request(Request("https://example.com/".toHttpUrl()))
        .protocol(Protocol.HTTP_1_1)
        .message("OK")
        .code(200)
        .body(
          object : ResponseBody() {
            override fun contentType() = null

            override fun contentLength() = -1L

      .host(uriHost)
      .port(uriPort)
      .build()

  /**
   * The protocols the client supports. This method always returns a non-null list that
   * contains minimally [Protocol.HTTP_1_1].
   */
  @get:JvmName("protocols")
  val protocols: List<Protocol> = protocols.toImmutableList()

  @get:JvmName("connectionSpecs")
  val connectionSpecs: List<ConnectionSpec> =
    connectionSpecs.toImmutableList()