@Test
  fun defaultConfigIsNoTimeout() {
    val request =
      Request
        .Builder()
        .url(server.url("/"))
        .build()
    val call = client.newCall(request)
    assertThat(call.timeout().timeoutNanos()).isEqualTo(0)
  }

  @Test
  fun configureClientDefault() {
    val request =
      Request
        .Builder()
        .url(server.url("/"))
        .build()
    val timeoutClient =
      client

    // NOTE: if timeout < 0, remainingNanos will be < 0 and we will fall into the while(true) loop
    // at the bottom and throw a timeoutexception.
    long timeoutNanos = unit.toNanos(timeout); // we rely on the implicit null check on unit.
    long remainingNanos = timeoutNanos;
    if (Thread.interrupted()) {
      throw new InterruptedException();
    }
    @RetainedLocalRef Object localValue = valueField;

    // NOTE: if timeout < 0, remainingNanos will be < 0 and we will fall into the while(true) loop
    // at the bottom and throw a timeoutexception.
    long timeoutNanos = unit.toNanos(timeout); // we rely on the implicit null check on unit.
    long remainingNanos = timeoutNanos;
    if (Thread.interrupted()) {
      throw new InterruptedException();
    }
    @RetainedLocalRef Object localValue = valueField;

  private fun readHeader() {
    if (closed) throw IOException("closed")

    // Disable the timeout to read the first byte of a new frame.
    val b0: Int
    val timeoutBefore = source.timeout().timeoutNanos()
    source.timeout().clearTimeout()
    try {
      b0 = source.readByte() and 0xff
    } finally {
      source.timeout().timeout(timeoutBefore, TimeUnit.NANOSECONDS)
    }