prelude := buf.Bytes()
	binary.Write(buf, binary.BigEndian, crc32.ChecksumIEEE(prelude))
	buf.Write(header)
	message := buf.Bytes()
	binary.Write(buf, binary.BigEndian, crc32.ChecksumIEEE(message))

	fmt.Println(buf.Bytes())
}

func genProgressHeader() {
	buf := new(bytes.Buffer)

	buf.WriteByte(13)
	buf.WriteString(":message-type")
	buf.WriteByte(7)

    var b1 = length
    if (isClient) {
      b1 = b1 or B1_FLAG_MASK
      sinkBuffer.writeByte(b1)

      random.nextBytes(maskKey!!)
      sinkBuffer.write(maskKey)

      if (length > 0) {
        val payloadStart = sinkBuffer.size
        sinkBuffer.write(payload)

        sinkBuffer.readAndWriteUnsafe(maskCursor!!)
        maskCursor.seek(payloadStart)
        toggleMask(maskCursor, maskKey)

  /** Returns the number of bytes written. */
  public long getCount() {
    return count;
  }

  @Override
  public void write(byte[] b, int off, int len) throws IOException {
    out.write(b, off, len);
    count += len;
  }

  @Override
  public void write(int b) throws IOException {
    out.write(b);
    count++;
  }

  // Overriding close() because FilterOutputStream's close() method pre-JDK8 has bad behavior:

	}
	if reply = locksHeld == WriteLock; !reply { // Unless it is a write lock
		return false, fmt.Errorf("Unlock attempted on a read locked entity: %s (%d read locks active)", args.Resources[0], locksHeld)
	}
	delete(l.lockMap, args.Resources[0]) // Remove the write lock
	return true, nil
}

const ReadLock = 1

      val body = part.body

      sink!!.write(DASHDASH)
      sink.write(boundaryByteString)
      sink.write(CRLF)

      if (headers != null) {
        for (h in 0 until headers.size) {
          sink
            .writeUtf8(headers.name(h))
            .write(COLONSPACE)
            .writeUtf8(headers.value(h))
            .write(CRLF)
        }
      }

import okhttp3.Cache;
import okhttp3.Interceptor;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public final class RewriteResponseCacheControl {
  /** Dangerous interceptor that rewrites the server's cache-control header. */
  private static final Interceptor REWRITE_CACHE_CONTROL_INTERCEPTOR = chain -> {
    Response originalResponse = chain.proceed(chain.request());
    return originalResponse.newBuilder()

func (z *PartialOperation) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 8
	// write "Bucket"
	err = en.Append(0x88, 0xa6, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74)
	if err != nil {
		return
	}
	err = en.WriteString(z.Bucket)
	if err != nil {
		err = msgp.WrapError(err, "Bucket")
		return
	}
	// write "Object"
	err = en.Append(0xa6, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74)
	if err != nil {
		return
	}

    DeflaterSink(buffer, Deflater(Deflater.DEFAULT_COMPRESSION, true)).use { sink ->
      sink.write(Buffer().write(message1), message1.size.toLong())
    }
    buffer.writeByte(0x00)
    // Trailing data. We use the Okio segment size to make sure it's still in the input buffer.
    buffer.write(ByteArray(8192))
    inflater.inflate(buffer)
    assertThat(buffer.readByteString()).isEqualTo(message1)

	writer := newBitrotWriter(disk, "", volume, filePath, 35, bitrotAlgo, 10)

	_, err = writer.Write([]byte("aaaaaaaaaa"))
	if err != nil {
		t.Fatal(err)
	}
	_, err = writer.Write([]byte("aaaaaaaaaa"))
	if err != nil {
		t.Fatal(err)
	}
	_, err = writer.Write([]byte("aaaaaaaaaa"))
	if err != nil {
		t.Fatal(err)
	}
	_, err = writer.Write([]byte("aaaaa"))
	if err != nil {
		t.Fatal(err)
	}

		return
	}
	// write "Path"
	err = en.Append(0xa4, 0x50, 0x61, 0x74, 0x68)
	if err != nil {
		return
	}
	err = en.WriteString(z.Path)
	if err != nil {
		err = msgp.WrapError(err, "Path")
		return
	}
	// write "Creds"
	err = en.Append(0xa5, 0x43, 0x72, 0x65, 0x64, 0x73)
	if err != nil {
		return
	}
	// map header, size 3
	// write "AccessKey"