Overview#
The Refresh Token Grant is an
OAuth 2.0 Grant Type where
Authorization Server which support this grant will also issue a
Refresh Token when it returns an
Access Token to a
OAuth Client.
When the Access Token expires instead of sending the user back through the Authorization Code Grant the OAuth Client can use to the Refresh Token to retrieve a new Access Token with the same permissions as the old one.
There might be more information for this subject on one of the following: