public static ServerResponse getServerStream(String url, HashMap<String, String> parameter, String reqtype) {
        HttpURLConnection connection;

        ServerResponse streamBean = new ServerResponse();
        try {
            connection = (HttpURLConnection) (new URL(url)).openConnection();
            connection.setInstanceFollowRedirects(true);

            connection.setUseCaches(true);
//            connection.setDefaultUseCaches(true);

            connection.setReadTimeout(10000);
            connection.setConnectTimeout(15000);
            connection.setRequestMethod(reqtype);
           // connection.addRequestProperty("Cache-Control", "only-if-cached");
            connection.addRequestProperty("Cache-Control", "max-age=" + 30 * 60);
            int maxStale = 60 * 60 * 24 * 28; // tolerate 1 day stale
            connection.addRequestProperty("Cache-Control", "max-stale=" + maxStale);


            if (reqtype == NetworkLoader.POST) {
                connection.setDoInput(true);
                connection.setDoOutput(true);
                if (parameter != null) {
                    OutputStream os = connection.getOutputStream();
                    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
                    writer.write(getPostDataString(parameter));
                    writer.flush();
                    writer.close();
                    os.close();

                }
            }

            connection.connect();
            System.out.println("Response Cache is installed : " + HttpResponseCache.getInstalled().getHitCount()+" Size: "+ HttpResponseCache.getInstalled().maxSize());
            System.out.println("Cached response is : " + HttpResponseCache.getInstalled().get(new URI(url.toString()), reqtype, connection.getHeaderFields()));

            //System.out.println("Connection Error: " + connection.getResponseCode());
            if (connection.getResponseCode() == 200 && connection.getInputStream() != null) {
                streamBean.setResponseCode(connection.getResponseCode());
                streamBean.setServerResponse(convertStreamToString(connection.getInputStream()));
                return streamBean;
            } else {
                streamBean.setResponseCode(connection.getResponseCode());
                streamBean.setServerResponse(convertStreamToString(connection.getErrorStream()));
                return streamBean;
            }
        } catch (EOFException eof) {
            streamBean.setException(eof);
            eof.printStackTrace();
        } catch (SocketException se) {
            streamBean.setException(se);
            se.printStackTrace();
        } catch (IOException exception) {
            streamBean.setException(exception);
            exception.printStackTrace();
        } catch (Exception exception) {
            streamBean.setException(exception);
            exception.printStackTrace();
        }
        return streamBean;
    }