OAuth2 authentication with client_credentials

[bbenameur]

Expected Behavior / New Feature

I need to use an OAuth2 Authentication, grant_type = client_credentials

my input are :
1- Token url
2- ClientId
3- ClientSecret
4- Grant_Type : client_credentials

Actual Behavior / Motivation for New Feature

I'm trying to use ocelot with OAuth2 Authentication, grant_type = client_credentials
but I have always a 401 http status code like a route is not authorized

Steps to Reproduce the Problem

    services
        .AddAuthentication()
        .AddOAuth2Introspection("TestToken", options =>
        {
            options.Authority = "https://xxxxxxxxxxxxxx/token";
            options.ClientId = "xxxxxxxxxxxxxxxxxx";
            options.ClientSecret = "xxxxxxxxxxxxxxxxxxxxx";
            options.AuthenticationType = "client_credentials";
        });

    var ocelotBuilder = services.AddOcelot().AddPolly();

on the ocelot.json:

  "AuthenticationOptions": {
        "AuthenticationProviderKey": "TestToken",
        "AllowedScopes": []
  },

even when i see the log there is not call to token url (https://xxxxxxxxxxxxxx/token)

Specifications

• Version: Ocelot.Administration : 18.0.0/ OCelot 18.0.0
• Platform: Windows / .Net 6
• Subsystem:

[raman-m]

Hi Béchir!
Welcome to Ocelot world! 🐅

Please show and attach all configuration artifacts when you connect to this downstream service directly, without Ocelot gateway.
So, prove that direct connection works.
After that we will start brainstorming how to setup Ocelot and the route.