): Response =
    Response
      .Builder()
      .body(bodyHex.toResponseBody("text/plain".toMediaType()))
      .code(200)
      .message("OK")
      .request(Request.Builder().url(url).build())
      .protocol(Protocol.HTTP_2)
      .apply(fn)
      .build()

    val proxy: Proxy?,
  ) : CallEvent()

  data class ConnectEnd(
    override val timestampNs: Long,
    override val call: Call,
    val inetSocketAddress: InetSocketAddress,
    val proxy: Proxy?,
    val protocol: Protocol?,
  ) : CallEvent() {
    override fun closes(event: CallEvent): Boolean =
      event is ConnectStart && call == event.call && inetSocketAddress == event.inetSocketAddress && proxy == event.proxy
  }

  @Test
  fun testMozilla() {
    assumeNetwork()

    val request = Request.Builder().url("https://mozilla.org/robots.txt").build()

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

  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

            .url(url)
            .build();
    try (Response response = client.newCall(request).execute()) {
      assertTrue(response.code() == 200 || response.code() == 404);
      assertEquals(Protocol.HTTP_2, response.protocol());
    }
  }

   * invoked after [connectStart].
   */
  open fun connectEnd(
    call: Call,
    inetSocketAddress: InetSocketAddress,
    proxy: Proxy,
    protocol: Protocol?,
  ) {
  }

  /**
   * Invoked when a connection attempt fails. This failure is not terminal if further routes are
   * available and failure recovery is enabled.
   *

  ): Response =
    Response
      .Builder()
      .body(body.toResponseBody("text/plain".toMediaType()))
      .code(200)
      .message("OK")
      .request(Request.Builder().url(url).build())
      .protocol(Protocol.HTTP_2)
      .apply(fn)
      .build()

    }

    override fun body(): Sink = body
  }

  private class Entry {
    private val url: HttpUrl
    private val varyHeaders: Headers
    private val requestMethod: String
    private val protocol: Protocol
    private val code: Int
    private val message: String
    private val responseHeaders: Headers
    private val handshake: Handshake?
    private val sentRequestMillis: Long

    inetSocketAddress: InetSocketAddress,
    proxy: Proxy,
    protocol: Protocol?,
  ) {
    logWithTime("connectEnd: $protocol")

    delegate.connectEnd(call, inetSocketAddress, proxy, protocol)
  }

  override fun connectFailed(
    call: Call,
    inetSocketAddress: InetSocketAddress,
    proxy: Proxy,
    protocol: Protocol?,
    ioe: IOException,
  ) {

  fun secureConnectStart()

  fun secureConnectEnd(handshake: Handshake?)

  fun callConnectEnd(
    route: Route,
    protocol: Protocol?,
  )

  fun connectionConnectEnd(
    connection: Connection,
    route: Route,
  )

  fun connectFailed(
    route: Route,
    protocol: Protocol?,
    e: IOException,
  )

  fun connectionAcquired(connection: Connection)