code: function shouldIgnore(req, options) {
    var logger = getLogger(req, options);
    if (options.match && options.match.splice && options.match.length) {
      var matchedRule;
      var hasMatch = options.match.some(function (rule) {
        matchedRule = rule;
        return isMatchRule(req, req.path, rule);
      });
  
      if (hasMatch) {
        logger.info('Matched match rule.', matchedRule, ' Go into CAS authentication.');
        return false;
      }
  
      return true;
    }
  
    if (options.ignore && options.ignore.splice && options.ignore.length) {
      var matchedIgnoreRule;
      var hasMatchIgnore = options.ignore.some(function (rule) {
        matchedIgnoreRule = rule;
        return isMatchRule(req, req.path, rule);
      });
  
      if (hasMatchIgnore) {
        logger.info('Matched ignore rule.', matchedIgnoreRule, ' Go through CAS.');
        return true;
      }
  
      return false;
    }
  
    return false;
  }
docs: Check options.match first, if match, return `false`, then check the options.ignore, if match, return `true`.
  
  If returned `true`, then this request will bypass CAS directly.
  
  @param req
  @param options
  @param logger