code: def _verifyDiscoveredServices(self, claimed_id, services,
                                    to_match_endpoints):
          
  
          # Search the services resulting from discovery to find one
          # that matches the information from the assertion
          failure_messages = []
          for endpoint in services:
              for to_match_endpoint in to_match_endpoints:
                  try:
                      self._verifyDiscoverySingle(endpoint, to_match_endpoint)
                  except ProtocolError as why:
                      failure_messages.append(str(why))
                  else:
                      # It matches, so discover verification has
                      # succeeded. Return this endpoint.
                      return endpoint
          else:
              logging.error('Discovery verification failure for %s' %
                            (claimed_id, ))
              for failure_message in failure_messages:
                  logging.error(' * Endpoint mismatch: ' + failure_message)
  
              raise DiscoveryFailure(
                  'No matching endpoint found after discovering %s' %
                  (claimed_id, ), None)
docs: See @L{_discoverAndVerify}