If it returns a Request object, Scrapy will stop callingprocess_request() methods and reschedule the returned request. Once the newly returnedrequest is performed, the appropriate middleware chain will be called onthe downloaded response.
If it returns a Request object, Scrapy will stop callingprocess_request() methods and reschedule the returned request. Once the newly returnedrequest is performed, the appropriate middleware chain will be called onthe downloaded response.