[keycloak-user] How to authenticate using offline refresh_token

[Mariusz Chruscielewski - Info.nl]

Hi,

We are using scope=offline_token param to get refresh_token that is valid for long time, then we do call :

grant_type=refresh_token&client_id=xxxx&scope=offline_access&refresh_token={refresh_token}

to get access_token, and that call returns access_token with status 200. Next step is to call our custom REST Endpoint using authorization header:

Authorization: bearer {access_token}

But in Keycloak itself, when we try to check if token  is valid:

private final AuthenticationManager.AuthResult auth;

public EntitlementResourceProvider(KeycloakSession session, String abosUrl, String abosUsername, String abosPassword) {
        this.session = session;
        this.auth = new AppAuthManager().authenticateBearerToken(session, session.realms().getRealm(Constants.XXXXXXX));
}

this.auth is null, when I was debugging this, I found that Keycloak reports: Token invalid. How can it be invalid, if it was just issued?

What is even more interesting, this works between first login using credentials and time configured as SSO Session Idle (so in our case for 30 minutes)

I understand that session is closed after some Idle time, but if we have valid refresh_token, and we get new access_token, why doesn't it validate? Am I using wrong method?


Kind Regards,

Mariusz Chruścielewski

software engineer

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