code: private static void stopAll()
      { 
          if (_configs!=null)
          {
              synchronized(_configs)
              {
                  for(int i=0;i<_servers.size();i++)
                  {
                      HttpServer server = (HttpServer)_servers.get(i);
                      try{server.stop();}catch(InterruptedException e){}
                  }
              }
          }
      }
docs: /* ------------------------------------------------------------