URL url = new URL(connstr);

                GsonBuilder gsonBuilder = new GsonBuilder();
                gsonBuilder.setLongSerializationPolicy(LongSerializationPolicy.STRING);
                Gson gson = gsonBuilder.create();

                String queryString = "request=" + URLEncoder.encode(gson.toJson(request), "UTF-8");
                byte[] postData = queryString.getBytes(Charset.forName("UTF-8"));
                int postDataLength = postData.length;



                //HttpsURLConnection http = (HttpsURLConnection) url.openConnection();
                HttpURLConnection http = (HttpURLConnection) url.openConnection();
                http.setRequestMethod("POST");
                http.setDoInput(true);
                http.setDoOutput(true);
                http.setInstanceFollowRedirects(false);
                http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");
                http.setRequestProperty("charset", "utf-8");
                http.setRequestProperty("Content-Length", Integer.toString(postDataLength));
                http.setUseCaches(false);

                // Send POST output.
                DataOutputStream printout = new DataOutputStream(http.getOutputStream());
                printout.write(postData);
                printout.flush();
                printout.close();