I've implemented Identity Server 3 with SAML based on this example: https://github.com/Sustainsys/Saml2/tree/master/Samples/SampleIdentityServer3
Everything is working, but the SAML Identity Provider (DigiD) requires reauthentication. This is done by sending the SAML AuthnRequest again.
Does anyone know how the SAML AuthnRequest can be send again from Identity Server 3? I've tried to use refresh tokens, but this doesn't seem to trigger another SAML AuthnRequest.