I want to protect my endpoint. Only allow my android app use this endpoint method. How can i archive this purpose?. I don't want to ask user to provide credential.
I did provide the clientids. But look like the User parameter on backend is always null. I'm following this instruction. https://cloud.google.com/appengine/docs/java/endpoints/getstarted/backend/code_walkthrough#oauth_protecting_a_method
Thank you so much.