do {
            if ((n = readn(in, sbuf, 0, 4)) < 4) {
                return null;
            }
        } while (sbuf[0] == (byte) 0x85); /* Dodge NetBIOS keep-alive */
        n = readn(in, sbuf, 4, 32);
        /* read smb header */
        if (n < 32) {
            return null;
        }
        if (LogStream.level >= 4) {
            log.println("New data read: " + this);

      // The default implementation of Reader#read(CharBuffer) allocates a
      // temporary char[], so we call Reader#read(char[], int, int) instead.
      int read = (reader != null) ? reader.read(buf, 0, buf.length) : readable.read(cbuf);
      if (read == -1) {
        lineBuf.finish();
        break;
      }
      lineBuf.add(buf, 0, read);
    }
    return lines.poll();
  }

    }

    @Override
    protected Long peekKey() throws IOException {
        do {
            if (readn(this.in, this.sbuf, 0, 4) < 4) {
                return null;
            }
        } while (this.sbuf[0] == (byte) 0x85); /* Dodge NetBIOS keep-alive */
        /* read smb header */
        if (readn(this.in, this.sbuf, 4, SmbConstants.SMB1_HEADER_LENGTH) < SmbConstants.SMB1_HEADER_LENGTH) {
            return null;

* `write(data)`: Writes `data` (`str` or `bytes`) to the file.
* `read(size)`: Reads `size` (`int`) bytes/characters of the file.
* `seek(offset)`: Goes to the byte position `offset` (`int`) in the file.
    * E.g., `await myfile.seek(0)` would go to the start of the file.
    * This is especially useful if you run `await myfile.read()` once and then need to read the contents again.
* `close()`: Closes the file.

    }

    /**
     * Reads a null-terminated string from the buffer
     * @param src source buffer
     * @param srcIndex starting index in the buffer
     * @return read string
     */
    public String readString(final byte[] src, final int srcIndex) {
        return readString(src, srcIndex, 255, this.useUnicode);
    }

    /**

	buf := make([]byte, 1)
	if _, err := b.Read(nil); err != nil {
		t.Fatalf("1st nil Read = %v; want nil", err)
	}
	if _, err := b.Read(buf); err != errFake {
		t.Fatalf("1st Read = %v; want errFake", err)
	}
	if _, err := b.Read(nil); err != nil {
		t.Fatalf("2nd nil Read = %v; want nil", err)
	}
	if _, err := b.Read(buf); err != nil {
		t.Fatalf("3rd Read with buffer = %v; want nil", err)
	}

    assertEquals(expected, new String(buf));
    assertFullyRead(reader);

    // read in chunks to fixed array
    reader = new CharSequenceReader(charSequence);
    buf = new char[5];
    StringBuilder builder = new StringBuilder();
    int read;
    while ((read = reader.read(buf, 0, buf.length)) != -1) {
      builder.append(buf, 0, read);
    }

class HeadersReader(
  val source: BufferedSource,
) {
  private var headerLimit = HEADER_LIMIT.toLong()

  /** Read a single line counted against the header size limit. */
  fun readLine(): String {
    val line = source.readUtf8LineStrict(headerLimit)
    headerLimit -= line.length.toLong()
    return line
  }

  /** Reads headers or trailers. */
  fun readHeaders(): Headers {
    val result = Headers.Builder()
    while (true) {

    @Throws(IOException::class)
    override fun read(
      sink: Buffer,
      byteCount: Long,
    ): Long {
      while (left == 0) {
        source.skip(padding.toLong())
        padding = 0
        if (flags and FLAG_END_HEADERS != 0) return -1L
        readContinuationHeader()
        // TODO: test case for empty continuation header?
      }

      val read = source.read(sink, minOf(byteCount, left.toLong()))

      }
    }

    override fun read(
      sink: Buffer,
      byteCount: Long,
    ): Long {
      require(byteCount >= 0L) { "byteCount < 0: $byteCount" }
      check(!closed) { "closed" }
      if (bytesRemaining == 0L) return -1

      val read = super.read(sink, minOf(bytesRemaining, byteCount))
      if (read == -1L) {