code: protected void onRequestRedirect(final RequestRedirectEvent event) {
          LOGGER.log(Level.INFO, "onRequestRedirect: {0} -> {1}",
                  new Object[]{
                      event.getCrawlCandidate().getRequestUrl(),
                      event.getRedirectedCrawlRequest().getRequestUrl()
                  });
      }
docs: Callback which gets called when a request is redirected.
  
  @param event the <code>RequestRedirectEvent</code> instance