asked 10 months ago Asked
4 Answers
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I AM EDITED.
I have a Next JS app, a next-auth library and aws cognito to store user information. I created a public client in my Cognito userpool and using that userpool id & client id, I initially successfully connected my application to Cognito. Back then, I was not using next-auth.
Now I decided to use next-auth and take all this server side. I'm still using the old cognito client. It properly redirects me to Cognito login UI, but after a successful login, the following error is triggered by next-auth
https://next-auth.js.org/errors#oauth_callback_error invalid_client {
error: OPError: invalid_client ...Then there is a trace of the error followed by
name: 'OAuthCallbackError',
code: undefined
},
providerId: 'cognito',
message: 'invalid_client'
}Why am I getting this error?
next-auth will run it in the server side, which is why you would need a Confidential client instead of a Public client.
This is how AWS Cognito described different type of clients -
Public client: A native, browser or mobile-device app. Cognito API requests are made from user systems that are not trusted with a client secret.
Confidential client A server-side application that can securely store a client secret. Cognito API requests are made from a central server.
Hmm, this is a really interesting question. It appears you don't really have an idea of what you're talking about.
No, I do know what I'm talking about.
It is just a basic question for other people who want to learn.
The error message "invalid_client" indicates that there is an issue with the client configuration or credentials being used when trying to perform the OAuth callback from Cognito back to Next.js with next-auth.
There are a few common reasons why this error might occur:
1. **Client ID Mismatch**: Ensure that the client ID configured in your Next.js application matches the one created in your Cognito userpool. If you are using the old client ID, make sure it is correctly copied over to Next.js.
2. **Client Secret**: If your Cognito userpool client requires a client secret, ensure that it is correctly configured in your Next.js application within the next-auth configuration.
3. **Redirect URIs**: Check that the redirect URIs configured in your Cognito userpool client settings match the callback URL configured in your next-auth settings. They need to be identical for the OAuth flow to work correctly.
4. **Token Signing Algorithm**: Verify that the token signing algorithm used by Next.js and Cognito are compatible. It's important to ensure that the algorithms used for signing and verifying tokens are supported by both systems.
5. **Scope Configuration**: Make sure that the required OAuth scopes are properly configured in both Cognito and next-auth to allow the necessary access and permissions for the authentication flow.
By verifying and adjusting these settings, you should be able to resolve the "invalid_client" error and successfully authenticate users with next-auth and Cognito in your Next.js application.
