I was wondering if it was possible to restrict a URL so that only your web application can query it.
I want to store a list of used usernames so that when a user signs up, I can check if the username they want to use is unique.
I am storing my usernames both in a FIREBASE and Google App Engine data store.
I was wondering if it was possible to restrict the URL that my server queries (e.g. /usernames) so that ONLY my server can query it. That is, if someone goes to the URL usernames, they'll just be redirected back to the home page or something.
Thanks in advance