fix insecure hosts crash with an `IllegalArgumentException` on Android.


## Version 4.7.0

_2020-05-17_

 *  New: `HandshakeCertificates.Builder.addInsecureHost()` makes it easy to turn off security in
    private development environments that only carry test data. Prefer this over creating an
    all-trusting `TrustManager` because only hosts on the allowlist are insecure. From
    [our DevServer sample][dev_server]:

      encodings[ 0x10] = encoding // Data Link Escape
      encodings[ 0x11] = encoding // Device Control 1 (oft. XON)
      encodings[ 0x12] = encoding // Device Control 2
      encodings[ 0x13] = encoding // Device Control 3 (oft. XOFF)
      encodings[ 0x14] = encoding // Device Control 4
      encodings[ 0x15] = encoding // Negative Acknowledgment
      encodings[ 0x16] = encoding // Synchronous idle

      assertThat(responseBody.readUtf8Line()).isNull()
    }
    body.awaitSuccess()
  }

  /**
   * Duplex calls that have follow-ups are weird. By the time we know there's a follow-up we've
   * already split off another thread to stream the request body. Because we permit at most one
   * exchange at a time we break the request stream out from under that writer.
   */
  @Test
  fun duplexWithRedirect() {

      } else {
        fileSystem.atomicMove(journalFileBackup, journalFile)
      }
    }

    civilizedFileSystem = fileSystem.isCivilized(journalFileBackup)

    // Prefer to pick up where we left off.
    if (fileSystem.exists(journalFile)) {
      try {
        readJournal()
        processJournal()
        initialized = true
        return
      } catch (journalIsCorrupt: IOException) {

 */
internal class FastFallbackExchangeFinderTest {
  private val taskFaker = TaskFaker()
  private val taskRunner = taskFaker.taskRunner

  /**
   * Note that we don't use the same [TaskFaker] for this factory. That way off-topic tasks like
   * connection pool maintenance tasks don't add noise to route planning tests.
   */
  private val routePlanner = FakeRoutePlanner(taskFaker = taskFaker)

obira.hokkaido.jp obninsk.su observer obu.aichi.jp obuse.nagano.jp oceanographic.museum oceanographique.museum ocelot.mythic-beasts.com ochi.kochi.jp od.ua odate.akita.jp odawara.kanagawa.jp odda.no odesa.ua odessa.ua odo.br oe.yamagata.jp of.by of.je of.no off.ai office office-on-the.net official.academy official.ec ofunato.iwate.jp og.ao og.it oga.akita.jp ogaki.gifu.jp ogano.saitama.jp ogasawara.tokyo.jp ogata.akita.jp ogawa.ibaraki.jp ogawa.nagano.jp ogawa.saitama.jp ogawara.miyagi.jp ogi.saga.jp ogimi.okinawa.jp...

af
gov.af
com.af
org.af
net.af
edu.af

// ag : http://www.nic.ag/prices.htm
ag
com.ag
org.ag
net.ag
co.ag
nom.ag

// ai : http://nic.com.ai/
ai
off.ai
com.ai
net.ai
org.ai

// al : http://www.ert.gov.al/ert_alb/faq_det.html?Id=31
al
com.al
edu.al
gov.al
mil.al
net.al
org.al

import okhttp3.internal.connection.RoutePlanner.Plan
import okhttp3.internal.okHttpName

/**
 * Speculatively connects to each IP address of a target address, returning as soon as one of them
 * connects successfully. This kicks off new attempts every 250 ms until a connect succeeds.
 */
internal class FastFallbackExchangeFinder(
  override val routePlanner: RoutePlanner,
  private val taskRunner: TaskRunner,
) : ExchangeFinder {

      cbuf: CharArray,
      off: Int,
      len: Int,
    ): Int {
      if (closed) throw IOException("Stream closed")

      val finalDelegate =
        delegate ?: InputStreamReader(
          source.inputStream(),
          source.readBomAsCharset(charset),
        ).also {
          delegate = it
        }
      return finalDelegate.read(cbuf, off, len)
    }

   * lifted. Such writes occur on an application-provided thread and may occur concurrently with
   * reads of the [ResponseBody]. For duplex request bodies, [writeTo] should return
   * quickly, possibly by handing off the provided request body to another thread to perform
   * writing.
   *
   * [grpc]: https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md
   */
  open fun isDuplex(): Boolean = commonIsDuplex()

  /**