<?php

class RouterListener extends sfRouterListener
{
    protected $exception;

    public function onEarlyKernelRequest(GetResponseEvent $event)
    {
      $return = parent::onEarlyKernelRequest($event);

      try {
        $this->onKernelRequest($event);
      } catch (Exception $e) {
        $this->exception = $e;
      }

      return $return;
    }

    public function onKernelRequest(GetResponseEvent $event)
    {
      if ($this->exception) {
        throw $this->exception;
      }
      return parent::onKernelRequest($event);
    }
}