apply {
        this.sentRequestAtMillis = sentRequestAtMillis
      }

    open fun receivedResponseAtMillis(receivedResponseAtMillis: Long) =
      apply {
        this.receivedResponseAtMillis = receivedResponseAtMillis
      }

    internal fun initExchange(exchange: Exchange) {
      this.exchange = exchange
    }

    open fun build(): Response {

            .newBuilder()
            .headers(combine(cacheResponse.headers, networkResponse.headers))
            .sentRequestAtMillis(networkResponse.sentRequestAtMillis)
            .receivedResponseAtMillis(networkResponse.receivedResponseAtMillis)
            .cacheResponse(cacheResponse.stripBody())
            .networkResponse(networkResponse.stripBody())
            .build()

        networkResponse.body.close()

      }
      var response =
        responseBuilder
          .request(request)
          .handshake(exchange.connection.handshake())
          .sentRequestAtMillis(sentRequestMillis)
          .receivedResponseAtMillis(System.currentTimeMillis())
          .build()
      var code = response.code

      while (shouldIgnoreAndWaitForRealResponse(code)) {

      this.responseHeaders = response.headers
      this.handshake = response.handshake
      this.sentRequestMillis = response.sentRequestAtMillis
      this.receivedResponseMillis = response.receivedResponseAtMillis
    }

    @Throws(IOException::class)
    fun writeTo(editor: DiskLruCache.Editor) {
      editor.newSink(ENTRY_METADATA).buffer().use { sink ->
        sink.writeUtf8(url.toString()).writeByte('\n'.code)

    val challenges: List<Challenge> = response.challenges()
    val cacheControl: CacheControl = response.cacheControl
    val sentRequestAtMillis: Long = response.sentRequestAtMillis
    val receivedResponseAtMillis: Long = response.receivedResponseAtMillis
  }

  @Test
  fun responseBuilder() {
    var builder: Response.Builder = Response.Builder()
    builder = builder.request(Request.Builder().build())

    init {
      if (cacheResponse != null) {
        this.sentRequestMillis = cacheResponse.sentRequestAtMillis
        this.receivedResponseMillis = cacheResponse.receivedResponseAtMillis
        val headers = cacheResponse.headers
        for (i in 0 until headers.size) {
          val fieldName = headers.name(i)
          val value = headers.value(i)
          when {

        .request(proxyConnectRequest)
        .protocol(Protocol.HTTP_1_1)
        .code(HttpURLConnection.HTTP_PROXY_AUTH)
        .message("Preemptive Authenticate")
        .sentRequestAtMillis(-1L)
        .receivedResponseAtMillis(-1L)
        .header("Proxy-Authenticate", "OkHttp-Preemptive")
        .build()

    val authenticatedRequest =
      route.address.proxyAuthenticator

	public final fun peekTrailers ()Lokhttp3/Headers;
	public final fun priorResponse ()Lokhttp3/Response;
	public final fun protocol ()Lokhttp3/Protocol;
	public final fun receivedResponseAtMillis ()J
	public final fun request ()Lokhttp3/Request;
	public final fun sentRequestAtMillis ()J
	public final fun socket ()Lokio/Socket;
	public fun toString ()Ljava/lang/String;

	public final fun peekTrailers ()Lokhttp3/Headers;
	public final fun priorResponse ()Lokhttp3/Response;
	public final fun protocol ()Lokhttp3/Protocol;
	public final fun receivedResponseAtMillis ()J
	public final fun request ()Lokhttp3/Request;
	public final fun sentRequestAtMillis ()J
	public final fun socket ()Lokio/Socket;
	public fun toString ()Ljava/lang/String;

    val t0 = System.currentTimeMillis()
    val response1 = get(server.url("/a"))
    assertThat(response1.body.string()).isEqualTo("A")
    assertThat(response1.header("Allow")).isNull()
    assertThat((response1.receivedResponseAtMillis - t0).toDouble()).isCloseTo(0.0, 250.0)

    // A conditional cache hit updates the cache.
    Thread.sleep(500) // Make sure t0 and t1 are distinct.
    val t1 = System.currentTimeMillis()