val index = serialTaskQueue.indexOfFirst { it.isReady() }
    if (index == -1) return null

    val nextTask = serialTaskQueue.removeAt(index)
    currentTask = nextTask
    contextSwitchCount++
    nextTask.start()
    return nextTask
  }

  private interface SerialTask {
    /** Returns true if this task is ready to start. */
    fun isReady() = true

        rawSocket?.closeQuietly()
      }
    }
  }

  override fun connectTlsEtc(): ConnectResult {
    val rawSocket = requireNotNull(rawSocket) { "TCP not connected" }
    check(!isReady) { "already connected" }

    val connectionSpecs = route.address.connectionSpecs
    var retryTlsConnection: ConnectPlan? = null
    var success = false

    }
  }

  /**
   * Returns an immediately-executable task for the calling thread to execute, sleeping as necessary
   * until one is ready. If there are no ready queues, or if other threads have everything under
   * control this will return null. If there is more than a single task ready to execute immediately
   * this will start another thread to handle that work.
   */
  fun awaitTaskToRun(): Task? {
    assertLockHeld()

    private byte[] b;
    private int n;
    private boolean ready;
    private SmbFileOutputStream out;

    private SmbException e = null;

    WriterThread() {
        super("JCIFS-WriterThread");
        this.ready = false;
    }

    /**
     * @return the ready
     */
    boolean isReady() {
        return this.ready;
    }

    /**
     * @throws SmbException
     *

        w.start();

        // Wait until writer thread is ready
        synchronized (w) {
            long deadline = System.currentTimeMillis() + 2000;
            while (!w.isReady() && System.currentTimeMillis() < deadline) {
                w.wait(10);
            }
            assertTrue(w.isReady(), "WriterThread should be ready");

            // Submit a write that will throw inside the writer thread

        service.startAsync();
      } catch (IllegalStateException e) {
        // This can happen if the service has already been started or stopped (e.g. by another
        // service or listener). Our contract says it is safe to call this method if
        // all services were NEW when it was called, and this has already been verified above, so we
        // don't propagate the exception.

    void testPadCalculation() {
        // Test pad calculation with different alignment values
        assertEquals(0, transaction.pad(0)); // Already aligned
        assertEquals(0, transaction.pad(4)); // Already aligned
        assertEquals(0, transaction.pad(8)); // Already aligned
        assertEquals(3, transaction.pad(1)); // Need 3 bytes to align to 4
        assertEquals(2, transaction.pad(2)); // Need 2 bytes to align to 4

    val pooled2 = planReusePooledConnection(connect, connect.routes)
    if (pooled2 != null) return pooled2

    return connect
  }

  /**
   * Returns the connection already attached to the call if it's eligible for a new exchange.
   *
   * If the call's connection exists and is eligible for another exchange, it is returned. If it

    override fun close() {
      if (closed) return

      if (bytesRemaining != 0L &&
        !discard(ExchangeCodec.DISCARD_STREAM_TIMEOUT_MILLIS, MILLISECONDS)
      ) {
        carrier.noNewExchanges() // Unread bytes remain on the stream.
        responseBodyComplete(TRAILERS_RESPONSE_BODY_TRUNCATED)
      }

      closed = true
    }
  }

  /** An HTTP body with alternating chunk sizes and chunk bodies. */

   *
   * OkHttp won't retry when it is configured not to:
   *
   *  * If retries are forbidden with [OkHttpClient.retryOnConnectionFailure]. (OkHttp's defaults
   *    permit retries.)
   *  * If OkHttp already attempted to transmit the request body, and [RequestBody.isOneShot] is
   *    true.
   *
   * It won't retry if the exception is a bug or a configuration problem, such as:
   *