while (!source.exhausted()) {
          var rule: ByteString = source.readUtf8LineStrict().toRule() ?: continue

          if (rule.startsWith(EXCEPTION_RULE_MARKER)) {
            rule = rule.substring(1)
            // We use '\n' for end of value.
            totalExceptionRuleBytes += rule.size + 1
            sortedExceptionRules.add(rule)
          } else {

    }.also { expected ->
      when (expected) {
        is SSLException, is TlsFatalAlert -> {}
        else -> throw expected
      }
    }
  }

  // TODO(jwilson): tests below this marker need to be migrated to OkHttp's request/response API.
  @Test
  fun connectViaHttpsWithSSLFallback() {
    platform.assumeNotBouncyCastle()

    server.useHttps(handshakeCertificates.sslSocketFactory())

    val rule = findMatchingRule(domainLabels)
    if (domainLabels.size == rule.size && rule[0][0] != EXCEPTION_MARKER) {
      return null // The domain is a public suffix.
    }

    val firstLabelOffset =
      if (rule[0][0] == EXCEPTION_MARKER) {
        // Exception rules hold the effective TLD plus one.
        domainLabels.size - rule.size
      } else {

// Submitted by Tom Whitwell <******@****.***>
cloudapps.digital
london.cloudapps.digital

// GOV.UK Pay : https://www.payments.service.gov.uk/
// Submitted by Richard Baker <richard.baker@digital.cabinet-office.gov.uk>
pymnt.uk

// UKHomeOffice : https://www.gov.uk/government/organisations/home-office
// Submitted by Jon Shanks <******@****.***>
homeoffice.gov.uk

mandal.no mango mangyshlak.su maniwa.okayama.jp manno.kagawa.jp mansion.museum mansions.museum mantova.it manx.museum maori.nz map map.fastly.net map.fastlylb.net mar.it marburg.museum marche.it marine.ru maringa.br maritime.museum maritimo.museum marker.no market marketing markets marnardal.no marriott marshalls marugame.kagawa.jp marumori.miyagi.jp maryland.museum marylhurst.museum masaki.ehime.jp maserati masfjorden.no mashike.hokkaido.jp mashiki.kumamoto.jp mashiko.tochigi.jp masoy.no massa-carrara.it...

1806          ; disallowed                             # 3.0  MONGOLIAN TODO SOFT HYPHEN
1807..180A    ; valid                  ;      ; NV8    # 3.0  MONGOLIAN SIBE SYLLABLE BOUNDARY MARKER..MONGOLIAN NIRUGU
180B..180D    ; ignored                                # 3.0  MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE

  /** Though this executor service may hold many threads, they are not executed concurrently. */
  private val tasksExecutor = Executors.newCachedThreadPool(threadFactory("TaskFaker"))

  /**
   * True if this task faker has ever had multiple tasks scheduled to run concurrently. Guarded by
   * [TaskRunner.lock].
   */
  var isParallel = false

  /** Number of calls to [TaskRunner.Backend.execute]. Guarded by [TaskRunner.lock]. */