interface EventSource {
  /** Returns the original request that initiated this event source. */
  fun request(): Request

  /**
   * Immediately and violently release resources held by this event source. This does nothing if
   * the event source has already been closed or canceled.
   */
  fun cancel()

  fun interface Factory {
    /**
     * Creates a new event source and immediately returns it. Creating an event source initiates an

   * a default value.
   *
   * If this does read a value, it starts with the tag and length, and reads an entire value,
   * including any potential composed values.
   *
   * If there's nothing to read and no default value, this will throw an exception.
   */
  fun fromDer(reader: DerReader): T

  fun fromDer(byteString: ByteString): T {
    val buffer = Buffer().write(byteString)

      override fun cancel() {
        exchange.cancel()
      }
    }
  }

  override fun route(): Route = route

  override fun cancel() {
    // Close the raw socket so we don't end up doing synchronous I/O.
    rawSocket?.closeQuietly()
  }

  override fun socket(): Socket = socket!!

  /** Returns true if this connection is ready to host new streams. */

  }

  /**
   * When callers parse a URL with query components that aren't encoded, we shouldn't convert them
   * into a canonical form because doing so could be semantically different.
   */
  @Test
  fun queryCharactersNotReencodedWhenParsed() {
    val url = parse("http://host/?a=!$(),/:;?@[]\\^`{|}~")

        serveConnection(socket)
      }
    }
  }

  @Synchronized
  @Throws(IOException::class)
  fun shutdown() {
    if (shutdown) return
    shutdown = true

    if (!started) return // Nothing to shut down.
    val serverSocket = this.serverSocket ?: return // If this is null, start() must have failed.

    // Cause acceptConnections() to break out.
    serverSocket.close()

    // Await shutdown.

  private val cleanupTask =
    object : Task("$okHttpName Cache") {
      override fun runOnce(): Long {
        synchronized(this@DiskLruCache) {
          if (!initialized || closed) {
            return -1L // Nothing to do.
          }

          try {
            trimToSize()
          } catch (_: IOException) {
            mostRecentTrimFailed = true
          }

          try {

   * Returns -1 if no further cleanups are required.
   */
  fun closeConnections(now: Long): Long {
    // Compute the concurrent call capacity for each address. We won't close a connection if doing
    // so would violate a policy, unless it's OLD.
    val addressStates = this.addressStates
    for (state in addressStates.values) {
      state.concurrentCallCapacity = 0
    }

                readBytes.update(acknowledged = unacknowledgedBytesRead)
              }
            } else if (!finished && errorExceptionToDeliver == null) {
              // Nothing to do. Wait until that changes then try again.
              waitForIo()
              tryAgain = true
            }
          } finally {
            if (doReadTimeout) {

    assertThat(i.hasNext()).isTrue()
    assertThat(i.next()).isEqualTo(urlB.toString())
    assertThat(i.hasNext()).isTrue()
    assertThat(i.next()).isEqualTo(urlC.toString())

    // ... and nothing else.
    assertThat(i.hasNext()).isFalse()
    assertFailsWith<NoSuchElementException> {
      i.next()
    }
  }

  @Test
  fun iteratorRemoveFromCache() {

    )
  }

  /** Test the introspection method [TaskQueue.scheduledTasks]. */
  @Test fun scheduledTasks() {
    redQueue.execute("task one", 100.µs) {
      // Do nothing.
    }

    redQueue.execute("task two", 200.µs) {
      // Do nothing.
    }

    assertThat(redQueue.scheduledTasks.toString()).isEqualTo("[task one, task two]")

    assertThat(testLogHandler.takeAll()).containsExactly(