[keycloak-user] Nodejs adapter - session object not persisting redirect_uri

[Robert Parker]

Hi,

I am trying to use the nodejs adapter with my express application and I am encountering issues when the adapter tries to exchange my user's authorization code for an access token.

I have been debugging the calls made from the adapter library, and can see after the user has been authorised, an obtainFromCode function is invoked in the grant-manager module (keycloak-auth-utils\lib\grant-manager.js) and in particular there is the following line of code present:

redirect_uri: request.session ? request.session.auth_redirect_uri : {}

Adding a breakpoint to this, I can see a session object is present on the request object, but there is no auth_redirect_uri property present.

This ends up sending an empty redirect_uri param in the POST request being made to my keycloak server, and I get back an invalid_code error. I can replicate the same behaviour if I make the requests using Postman, and can fix and get an access token back if I set to the correct redirect_uri as configured against my client in the keycloak admin portal.

I can see in the initial request sent out when first authorising the user that this contains a redirect_uri query string param also.

I have my node express application using a mongoDB session store (using express-session), so am using the same store when configuring keycloak with my express app instance. I followed the example in the keycloak-nodejs-connect library here<https://github.com/keycloak/keycloak-nodejs-connect/blob/master/example/index.js>

Can anyone suggest what may be going on for me here, why this redirect_uri is not being set on the session object so it can be read in my the nodejs adapter library?

Thanks

  *   Rob


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Robert Parker - Front End Developer
Applied Card Technologies Ltd
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