Socket.io resource option is always equal to '/socket.io'

I'm trying to change the value of resource without success(in admin/config/nodejs/js). Whatever you fill in the form value, it's always returning '/socket.io'.

Looking in the nodejs.module:

function nodejs_get_config() {
  $defaults = array(
    'scheme' => variable_get('nodejs_server_scheme', 'http'),
    'secure' => variable_get('nodejs_server_scheme', 'http') == 'https' ? 1 : 0,
    'host' => variable_get('nodejs_config_host', 'localhost'),
    'port' => variable_get('nodejs_config_port', '8080'),
    'resource' => '/socket.io',
    'authToken' => md5(session_id()),
    'serviceKey' => variable_get('nodejs_config_serviceKey', ''),
  );

  return variable_get('nodejs_config', array()) + $defaults;
}

It should get the value from the database instead of provide a simple string.