I use firebase at client and use firebase-admin at server. At client i use signInWithPopUp to sign in to my web app with google account, then receive accessToken, expirationTime, refreshToken at client.
stsTokenManager:{
accessToken: "eyJhbGciOiJzGcaUzI1JKKIsIzxcXzStpZC... ,
expirationTime: 1648809531166 ,
refreshToken: "AIwxAjDfh8_SkckvoSsASxXllMkIX8GBNx...
And i use verify function in firebase-admin lib for verify token was send by client, but until token has expired(1h), i can't use this token. How i get new accesstoken when current access token has expired?