Adding error-handler to ajax produces additional request

Vyacheslav

I see something strange in console (http://localhost:3001/errajax)
I just added a stub to ajax object and datatables began to produce an additional json-request like:
GET https://datatbl.herokuapp.com/errajax?_=1448540064717

var table = $('#users').DataTable( {

    ajax: { error:  function( e, settings, techNote, message ) {} } 
});

Is it a bug or one more time my mistake?

Vyacheslav

See http://plnkr.co/edit/SQ5JE9?p=preview
I am increasingly convinced that if the datatable settings have even empty

ajax: {}

DataTable will try to get data via ajax despite the fact that a url is absent (empty).

I believe this is not convenient because it eliminates the possibility to set up a common error handler in defaults i.e.

  $.extend( true, $.fn.dataTable.defaults, {

    ajax: {
      error:  function( e, settings, techNote, message ) {

          if( e.status == 401 || e.status == 403 ) {

             console.log(' No way! ');

          } else {

             console.log(message);

          }
      }
    }});

To avoid the current behavior I have to write

ajax: null,

for every datatable with static data source.