Refresh Firebase Token

问题

I'm using web firebase javascript to authenticate by email and password. This process generates a token which I use to verify on my nodejs backend using firebase-admin. Once this token is generated, I store it on the browser local/session storage.

The front end is AngularJs which I intercept the http request to inject the token stored within the browser.

This is working fine, however after a while this token expire. So what would be the best way to refresh this token before it sends to the nodejs api?

Note: should I requet the currentUser.getToken() every request?

回答1:

The currentUser.getToken(true) only refreshes the token when the current token has expired! So it doesn't create unneeded traffic or requests to Firebase!

firebase.auth().currentUser.getToken(true)
.then(function(idToken) {
  // ... do stuff!
}).catch(function(error) {
  if (error) throw error
});

Here you'll see that I added true as an argument to the getToken() function. This forces a refresh!

Here is the Firebase Documentation for the getToken() function.

I hope that helps!

来源：https://stackoverflow.com/questions/42616318/refresh-firebase-token