
Understanding the Authorization Code Flow in OAuth 2.0
Visual Overview: sequenceDiagram participant User participant App as Client App participant AuthServer as Authorization Server participant Resource as Resource Server User->>App: 1. Click Login App->>AuthServer: 2. Authorization Request AuthServer->>User: 3. Login Page User->>AuthServer: 4. Authenticate AuthServer->>App: 5. Authorization Code App->>AuthServer: 6. Exchange Code for Token AuthServer->>App: 7. Access Token + Refresh Token App->>Resource: 8. API Request with Token Resource->>App: 9. Protected Resource OAuth 2.0 is a widely used authorization framework that enables applications to access user data on behalf of the user without requiring the user to share their credentials. It provides a secure and standardized approach to delegating access control, ensuring that applications can interact with various services while keeping user information private. The Authorization Code Flow is one of the core grant types in OAuth 2.0, designed for scenarios where both the client and the authorization server need to exchange information securely. ...