Zend\Mvc\Controller\AbstractActionController::onDispatch PHP Method

    public function onDispatch(MvcEvent $e)
    {
        $routeMatch = $e->getRouteMatch();
        if (!$routeMatch) {
            /**
             * @todo Determine requirements for when route match is missing.
             *       Potentially allow pulling directly from request metadata?
             */
            throw new Exception\DomainException('Missing route matches; unsure how to retrieve action');
        }
        $action = $routeMatch->getParam('action', 'not-found');
        $method = static::getMethodFromAction($action);
        if (!method_exists($this, $method)) {
            $method = 'notFoundAction';
        }
        $actionResponse = $this->{$method}();
        $e->setResult($actionResponse);
        return $actionResponse;
    }

 /**
  * @param MvcEvent $event
  *
  * @return parent::onDispatch
  */
 public function onDispatch(MvcEvent $event)
 {
     $request = $event->getRequest();
     $remoteAddr = $request->getServer('REMOTE_ADDR');
     // check IP address is allowed
     $application = $event->getApplication();
     $config = $application->getConfig();
     $autoDeployConfig = $config['auto_deploy'];
     $allowedIpAddresses = $autoDeployConfig['ipAddresses'];
     // error if ip is not allowed
     if (!in_array($remoteAddr, $allowedIpAddresses, true)) {
         $baseModel = new \Zend\View\Model\ViewModel();
         $baseModel->setTemplate('layout/output');
         $model = new \Zend\View\Model\ViewModel();
         $model->setTemplate('error/403');
         $baseModel->addChild($model);
         $baseModel->setTerminal(true);
         $event->setViewModel($baseModel);
         $response = $event->getResponse();
         $response->setStatusCode(403);
         $response->sendHeaders();
         $event->setResponse($response);
         exit;
     }
     return parent::onDispatch($event);
 }