code: public boolean isListening() throws Exception {
          try {
              JSONObject resp = new JSONObject(Get.get(API_BASE_URL + ":" + API_PORT, Constants.REQUEST_HEARTBEAT, ""));
  
              return true;
          } catch (Exception e) {
              return false;
          }
      }
docs: Returns true if there is RoboRemoteServer currently listening
  @return
  @throws Exception