access token - Google OAuth 2.0 HTTP / RestFul authentication method, refresh_token expiry error -
i have built referring this site
using
https://www.accounts.google.com/o/oauth2/v2/auth?
i used address access token & refresh token.
then tried refresh token using refresh token.
i tried adding following parameters in post format address. https://www.googleapis.com/oauth2/v4/token
if normal, should following json,
access_token":"1/------------------", expires_in":3920, token_type":"bearer"
however, received following json.
error :invalid_grant, error_description :token has been expired or revoked.
please advise cause of error.
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