code: protected void processURL(HttpMessage message, int depth, String localURL, String baseURL) {
  		// Build the absolute canonical URL
  		String fullURL = URLCanonicalizer.getCanonicalURL(localURL, baseURL);
  		if (fullURL == null) {
  			return;
  		}
  
  		log.debug("Canonical URL constructed using '" + localURL + "': " + fullURL);
  		notifyListenersResourceFound(message, depth + 1, fullURL);
  	}
docs: Builds an url and notifies the listeners.
  
  @param message the message
  @param depth the depth
  @param localURL the local url
  @param baseURL the base url