Hi again,
You can either use "GOOGLE_APPLICATION_CREDENTIALS" environment variable for authenticating server to server or use Cloud Identity-Aware Proxy. The difference is that Identity-Aware Proxy (IAP) can be only applied on App Engine and the Cloud HTTPS Load Balancer, but the mentioned environment variable has a project wide scope and can be used for all the resources/APIs you have in your project. I should also add that “X-Appengine-Inbound-Appid” header is added to the request by the URLFetch service which is only available in App Engine Standard environment <https://cloud.google.com/appengine/docs/flexible/python/migrating#url_fetch> . -- 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 [email protected]. To post to this group, send email to [email protected]. 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/d18a428a-200a-4ad9-a806-fa514b9cce8b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
