How to handle custom firebase token expiry in Firebase 3.x.x

Question

I have used \"signInWithCustomToken()\" to authenticate firebase user.

This token expires in 1 hour.

Firebase has recommended tok

Answer 1

Something like this is a way to check the Token and see if its expired. You can then mint a new one

public async Task GetIdTokenAsync()
{
  // Get current time in seconds from Epoch
  var secondsSinceEpoch = DateTimeOffset.UtcNow.ToUnixTimeSeconds();

  // We have already minted a token for this session, so check if we need a new one 
  if (this.idToken != null)
  {
    // Check to see if current token is expired or will expire soon
    var idTokenExpiration = JwtDecoder.TokenExpirationTime(this.idToken);
    if (idTokenExpiration > (secondsSinceEpoch - 60L))
    {
      return this.idToken;
    }
  }

  // No id token for this session, or we have an id token, but its expired, so mint a new one
  this.idToken = await auth?.CurrentUser?.GetIdTokenAsync(true);
  return this.idToken;
}