AFAIK Urlfetch works just like any external client (so just like using cURL from your machine), so if it isn't authenticated, it will be redirected to the authentication page.
If you don't need synchronous communication, you can take a look at taskqueues: https://cloud.google.com/appengine/docs/standard/python/taskqueue/ - AFAIK it is not GA in the Flexible environments but you can take part in the Cloud Tasks alpha: https://docs.google.com/forms/d/1g6yRocQ3wtdTArfO4JX8DoqOhYmsoTVgrlFnS0mV1bo/viewform?edit_requested=true Attila -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/6c32ecc3-c8ed-4a2e-81e0-92bf93731c08%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
