public void onRequest(IHttpExchange exchange) throws IOException {
BodyDataSink bodyDataSink = null;
if (isChunkedMode) {
bodyDataSink = exchange.send(new HttpResponseHeader(200, "text/plain"));
} else {
bodyDataSink = exchange.send(new HttpResponseHeader(200, "text/plain"), length);
}
dataWriter = new DataWriter(bodyDataSink, length / 10, 10);
new Thread(dataWriter).start();
}