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SuperTokens INVALID_REFRESH_TOKEN

The refresh token is invalid or has been revoked.

Understanding SuperTokens: A Comprehensive Overview

SuperTokens is an open-source authentication solution designed to provide secure and scalable user authentication for web and mobile applications. It simplifies the process of implementing authentication by offering features such as session management, social login, and passwordless authentication. SuperTokens is particularly popular among developers for its ease of integration and flexibility, making it a go-to choice for many production applications.

Identifying the Symptom: INVALID_REFRESH_TOKEN

When using SuperTokens, you might encounter the error code INVALID_REFRESH_TOKEN. This error typically manifests when a user attempts to refresh their session but is unable to do so. The application may display an error message indicating that the refresh token is invalid, or the user may be unexpectedly logged out.

Exploring the Issue: What Does INVALID_REFRESH_TOKEN Mean?

The INVALID_REFRESH_TOKEN error occurs when the refresh token provided by the client is either invalid or has been revoked. This can happen for several reasons, such as the token being tampered with, expired, or manually revoked by the server. Understanding the root cause of this issue is crucial for implementing an effective resolution.

Common Causes of INVALID_REFRESH_TOKEN

  • The refresh token has expired due to a predefined expiration time.
  • The token was manually revoked, possibly due to a security breach or user logout.
  • There is a mismatch between the token and the session data stored on the server.

Steps to Resolve INVALID_REFRESH_TOKEN

To address the INVALID_REFRESH_TOKEN error, follow these actionable steps:

Step 1: Prompt User to Re-authenticate

The most straightforward solution is to prompt the user to log in again. This will generate a new session and refresh token, allowing the user to continue using the application without interruption.

Step 2: Implement Token Expiry Handling

Ensure that your application gracefully handles token expiry by checking the token's validity before making API requests. You can use SuperTokens' built-in methods to verify token validity. For more information, refer to the SuperTokens documentation on handling token expiry.

Step 3: Securely Store Tokens

Ensure that refresh tokens are securely stored on the client side, preferably in HTTP-only cookies, to prevent unauthorized access or tampering. For best practices, visit SuperTokens Security Best Practices.

Step 4: Monitor and Revoke Tokens

Implement server-side monitoring to detect suspicious activity and revoke tokens if necessary. This can be done using SuperTokens' session management features. Learn more about session management here.

Conclusion

By understanding the causes and implementing the steps outlined above, you can effectively resolve the INVALID_REFRESH_TOKEN error in your SuperTokens implementation. Regularly updating your authentication logic and following security best practices will help maintain a secure and seamless user experience.

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