// concurrently, check for it before we
				// write the filler byte.
				select {
				case err := <-doneCh:
					if err != nil {
						write([]byte{1})
						write([]byte(err.Error()))
					} else {
						write([]byte{0})
					}
					return
				default:
				}

				// Response not ready, write a filler byte.
				write([]byte{32})
				if canWrite {
					xhttp.Flush(w)
				}

  fun connectionPreface() {
    withLock {
      if (closed) throw IOException("closed")
      if (!client) return // Nothing to write; servers don't send connection headers!
      if (logger.isLoggable(FINE)) {
        logger.fine(format(">> CONNECTION ${CONNECTION_PREFACE.hex()}"))
      }
      sink.write(CONNECTION_PREFACE)
      sink.flush()
    }
  }

  /** Applies `peerSettings` and then sends a settings ACK. */

		mac := hmac.New(sha256.New, extKey)
		mac.Write(sealedKey.IV[:])
		mac.Write([]byte(domain))
		mac.Write([]byte(SealAlgorithm))
		mac.Write([]byte(path.Join(bucket, object))) // use path.Join for canonical 'bucket/object'
		unsealConfig = sio.Config{MinVersion: sio.Version20, Key: mac.Sum(nil)}
	case InsecureSealAlgorithm:
		sha := sha256.New()
		sha.Write(extKey)
		sha.Write(sealedKey.IV[:])

    public CharSink createSink() throws IOException {
      File file = createFile();
      if (initialString != null) {
        Writer writer = new OutputStreamWriter(new FileOutputStream(file), UTF_8);
        try {
          writer.write(initialString);
        } finally {
          writer.close();
        }
        return Files.asCharSink(file, UTF_8, FileWriteMode.APPEND);
      }

    // Verify the peer's settings were read and applied.
    assertThat(connection.peerSettings.headerTableSize).isEqualTo(0)
    val writer = connection.writer
    assertThat(writer.hpackWriter.dynamicTableByteCount).isEqualTo(0)
    assertThat(writer.hpackWriter.headerTableSizeSetting).isEqualTo(0)
  }

  @Test fun peerHttp2ClientDisablesPush() {
    val client = false // Peer is client, so we are server.

		m, e := w.Write(b.buf[b.off:])
		if m > nBytes {
			panic("bytes.Buffer.WriteTo: invalid Write count")
		}
		b.off += m
		n = int64(m)
		if e != nil {
			return n, e
		}
		// all bytes should have been written, by definition of
		// Write method in io.Writer
		if m != nBytes {
			return n, io.ErrShortWrite
		}
	}
	// Buffer is now empty; reset.
	b.Reset()
	return n, nil
}

// EncodeMsg implements msgp.Encodable
func (z *CheckPartsHandlerParams) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 4
	// write "id"
	err = en.Append(0x84, 0xa2, 0x69, 0x64)
	if err != nil {
		return
	}
	err = en.WriteString(z.DiskID)
	if err != nil {
		err = msgp.WrapError(err, "DiskID")
		return
	}
	// write "v"
	err = en.Append(0xa1, 0x76)
	if err != nil {
		return
	}

// QuoteTo write quoted value to writer
func (stmt *Statement) QuoteTo(writer clause.Writer, field interface{}) {
	write := func(raw bool, str string) {
		if raw {
			writer.WriteString(str)
		} else {
			stmt.DB.Dialector.QuoteTo(writer, str)
		}
	}

	switch v := field.(type) {
	case clause.Table:
		if v.Name == clause.CurrentTable {
			if stmt.TableExpr != nil {
				stmt.TableExpr.Build(stmt)
			} else {

    val metadataBuffer = Buffer()
    metadataBuffer.write(metadata)

    val fileOperator = FileOperator(file!!.channel)
    fileOperator.write(FILE_HEADER_SIZE + upstreamSize, metadataBuffer, metadata.size.toLong())
  }

  @Throws(IOException::class)
  fun commit(upstreamSize: Long) {
    // Write metadata to the end of the file.
    writeMetadata(upstreamSize)
    file!!.channel.force(false)

		var b Buffer
		b.Write(buf[0:1])
		for i := 0; i < 5<<10; i++ {
			b.Write(buf)
			b.Read(buf)
		}
	}
}

// Check that we don't compact too often. From Issue 5154.
func BenchmarkBufferFullSmallReads(b *testing.B) {
	buf := make([]byte, 1024)
	for i := 0; i < b.N; i++ {
		var b Buffer
		b.Write(buf)
		for b.Len()+20 < b.Cap() {
			b.Write(buf[:10])
		}