title: Magento - What is the internal url for shipping step in onepage checkout?
body: <p>I am using an observer to check the shipping information provided by the customer during onepage checkout. By observing the event <code>checkout_controller_onepage_save_shipping_method</code> I want to redirect the customer back to the shipping step to re-enter their information.</p>
  
  <p>Following the conversation on this page, <a href="https://stackoverflow.com/questions/4729429/what-is-the-correct-way-to-stop-a-checkout-from-an-event-observer-in-magento">What is the correct way to stop a checkout from an event observer in Magento?</a>, I have everything set up, but I do not want to redirect them to cart, just the shipping step. </p>
  
  <p><code>Mage::app()-&gt;getResponse()-&gt;setRedirect(Mage::getUrl('what/goes/here'));
  </code></p>
  
  <p>Can I make the code simply refresh the page?
  <code>Mage::app()-&gt;getResponse()-&gt;setRedirect(Mage::getUrl('checkout/onepage'));</code> does not work. </p>
  
  <p>Thanks!</p>