*
   * <ul>
   *   <li>use {@link StringReader} instead of {@link CharSequenceReader}. It is faster since it can
   *       use {@link String#getChars(int, int, char[], int)} instead of copying characters one by
   *       one with {@link CharSequence#charAt(int)}.
   *   <li>use {@link Appendable#append(CharSequence)} in {@link #copyTo(Appendable)} and {@link

    taskFaker.advanceUntil(ns(500L))
    server.processNextFrame() // Ping.
    client.processNextFrame() // Pong.
    taskFaker.advanceUntil(ns(1000L))
    server.processNextFrame() // Ping.
    client.processNextFrame() // Pong.
    taskFaker.advanceUntil(ns(1500L))
    server.processNextFrame() // Ping.
    client.processNextFrame() // Pong.
  }

  @Test

   */
  public static OutputStream asOutputStream(PrimitiveSink sink) {
    return new SinkAsStream(sink);
  }

  private static final class SinkAsStream extends OutputStream {
    final PrimitiveSink sink;

    SinkAsStream(PrimitiveSink sink) {
      this.sink = Preconditions.checkNotNull(sink);
    }

    @Override
    public void write(int b) {
      sink.putByte((byte) b);
    }

    @Override

        if (!settings.isSet(i)) continue
        sink.writeShort(i)
        sink.writeInt(settings[i])
      }
      sink.flush()
    }
  }

  /**
   * Send a connection-level ping to the peer. `ack` indicates this is a reply. The data in
   * `payload1` and `payload2` opaque binary, and there are no rules on the content.
   */
  @Throws(IOException::class)
  fun ping(
    ack: Boolean,
    payload1: Int,

    for (shift in (lengthByteCount - 1) * 8 downTo 0 step 8) {
      sink.writeByte((v shr shift).toInt())
    }
  }

  fun writeBitString(bitString: BitString) {
    val sink = sink()
    sink.writeByte(bitString.unusedBitsCount)
    sink.write(bitString.byteString)
  }

  fun writeOctetString(byteString: ByteString) {
    sink().write(byteString)
  }

  fun writeUtf8(value: String) {

/**
 * Utility methods and classes for I/O; for example input streams, output streams, readers, writers,
 * and files.
 *
 * <p>At the core of this package are the Source/Sink types: {@link ByteSource ByteSource}, {@link
 * CharSource CharSource}, {@link ByteSink ByteSink} and {@link CharSink CharSink}. They are
 * factories for I/O streams that provide many convenience methods that handle both opening and
 * closing streams for you.
 *

    TestByteSink sink = new TestByteSink();

    assertFalse(sink.wasStreamOpened() || sink.wasStreamClosed());

    assertEquals(bytes.length, source.copyTo(sink));
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());

    assertArrayEquals(bytes, sink.getBytes());
  }

   *     sink}
   */
  @CanIgnoreReturnValue
  public long copyTo(ByteSink sink) throws IOException {
    checkNotNull(sink);

    Closer closer = Closer.create();
    try {
      InputStream in = closer.register(openStream());
      OutputStream out = closer.register(sink.openStream());
      return ByteStreams.copy(in, out);
    } catch (Throwable e) {

  private val isClient: Boolean,
  val sink: BufferedSink,
  val random: Random,
  private val perMessageDeflate: Boolean,
  private val noContextTakeover: Boolean,
  private val minimumDeflateSize: Long,
) : Closeable {
  /** This holds outbound data for compression and masking. */
  private val messageBuffer = Buffer()

  /** The [Buffer] of [sink]. Write to this and then flush/emit [sink]. */

   * value that are {@linkplain Range#isConnected connected} to this range.
   *
   * <p>The behavior of {@link #get(Comparable) get(k)} after calling this method is identical to
   * the behavior described in {@link #put(Range, Object) put(range, value)}, however the ranges
   * returned from {@link #asMapOfRanges} will be different if there were existing entries which
   * connect to the given range and value.
   *