[keycloak-user] Grabbing messages flow between oidc client and Kc

Dear experts, we are running the following test between a client written in PHP and deployed on IIS and KC (2.5.4) using OIDC. Our main configuration: * ClientID and Name: IIS-client * Enabled [On] * Consent Required [Off] * Protocol [Oidc] * Access type [confidential] * Standard flow enabled [On] * Implicit Flow enabled [Off] * Direct access grant enabled [On] * Service accounts enabled [Off] * Authorization Enabled [Off] * Root Url [http://localhost:56579/*] * Valid redirect [http://localhost:56579/] * Admin [http://localhost:56579/] We challenge this configuration from our VB code where: Redirection code = WbCGHl6Btf5QemAJ3aGEsaBx-0zxnyiC1Hsx7hYIQFU.4ead731d-871a-4ba9-bbdd-1bcb251616dc state = ayyd9co1zzcar83 sClientId = IIS-client sClientSecret = b1c08260-5f8d-4f18-95e4-6928e340d1d2 *Token Request*: Header: authorization = Basic SVNNLWNsaWVudDpiMWMwODI2MC01ZjhkLTRmMTgtOTVlNC02OTI4ZTM0MGQxZDI= content-type = application/json charset = utf-8 FormField: grant_type=authorization_code&code=WbCGHl6Btf5QemAJ3aGEsaBx-0zxnyiC1Hsx7hYIQFU.4ead731d-871a-4ba9-bbdd-1bcb251616dc&state=ayyd9co1zzcar83&scope=openid&redirect_uri=http%3a%2f%2flocalhost%3a56579%2f Try POST oWebClient.UploadString at : sTokenUrl = http://localhost:8080/auth/realms/Test/protocol/openid-connect/token Keycloak is replying with an error 400, we have the feeling that is not correctly receiving the message in the format it is expecting, but we are not neither able to grab the message from the Keycloak's to read what is actually Keycloak receiving. Could you please support? Thanks