code: protected void process(HttpServletRequest request, HttpServletResponse response) throws IOException {
          boolean doStatusQuery = request.getParameter(PING_NODES) != null;
          String acceptHeader = request.getHeader("Accept");
          if (acceptHeader != null && acceptHeader.equalsIgnoreCase("application/json")) {
              ServletHelper.respondAsJsonWithHttpStatus(response, getProxyInfo(doStatusQuery), HttpServletResponse.SC_OK);
          } else {
              ServletHelper.respondAsHtmlUsingJsonAndTemplateWithHttpStatus(response, getProxyInfo(doStatusQuery),
                      RESOURCE_PAGE_FILE,
                      HttpServletResponse.SC_OK);
          }
      }
docs: This method gets all the nodes which are connected to the grid machine from the Registry and displays them in
  html page.
  
  @param request
  {@link HttpServletRequest} that represents the servlet request
  @param response
  {@link HttpServletResponse} that represents the servlet response
  @throws IOException