@Override
public void sendResponse(TransportResponse response, TransportResponseOptions options) throws IOException {
BytesStreamOutput bStream = new BytesStreamOutput();
StreamOutput stream = new HandlesStreamOutput(bStream);
stream.setVersion(version);
stream.writeLong(requestId);
byte status = 0;
status = TransportStatus.setResponse(status);
stream.writeByte(status); // 0 for request, 1 for response.
response.writeTo(stream);
stream.close();