How to persist firebase Authentication from firebase REST API

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Signing in into my firebase app via REST https://firebase.google.com/docs/reference/rest/auth only returns tokens which expire after 1 hour (3600 seconds, according to the REST response). I don't see any way to change this.

Using firebase JS SDK, the authentication persists "forever", which is what I would like to achieve. However I do not want to include the JS SDK in my app, if there is a way around it (mostly because of its size (~700kb)).

Is there a way to obtain a persistent login from the official firebase REST api?

firebase-authentication firebase
1 Answers

Using firebase JS SDK, the authentication persists "forever"

This is because the JS SDK automatically takes in charge the action of getting a new user's Firebase ID token when the current one expires, by using the refresh token. See the doc.

So you need to implement this mechanism yourself when you work with the Firebase Auth REST API, by using the endpoint that allows exchanging a refresh token for an ID token.

For that you should use the refresh token you received the last time you logged in, e.g. by using the endpoint that signs in a user with email/password, or the last time you refreshed the ID token (see below).

You'll get a response which contains the new Firebase ID token and refresh token. Next time this new ID token expires, use again the refresh token, and so forth...

user_33718620
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