Diagrams and movies of all the 4 authorization flows defined in RFC 6749 (The OAuth 2.0 Authorization Framework) and one more flow to re-issue an access token using a refresh token. 1. Authorization Code FlowThis is the flow defined in RFC 6749, 4.1. Authorization Code Grant. A client application (a) makes an authorization request to an authorization endpoint, (b) receives a short-lived authorizat