I can't add new header or change the authorization token for the downstream request

[siualpinto]

Hi
I need to change the access token of requests that go to the APIs via the Ocelot API Gateway.
I try to use a DelegatingHandler or PreQueryStringBuilderMiddleware/PreAuthorizationMiddleware, and the behaviour is the same.
Both change the Header in the request, but when I receive the request in the API, it seems that it uses all the original Headers. None of the new headers that I add reach the API.
Even tried to use it via configuration using the DownstreamHeaderTransform or UpstreamHeaderTransform in the route, but nothing.

Middleware

TokenResult tokenResult = ...;
 DownstreamRequest downstreamRequest = httpContext.Items.DownstreamRequest();
 httpContext.Request.Headers.Authorization = tokenResult.AccessToken;
// or 
 downstreamRequest.Headers.TryAddWithoutValidation("Authorization", $"Bearer {tokenResult.AccessToken}");

 _logger.LogInformation($"New Token: {httpContext.Request.Headers.Authorization}");

Delegating handler

TokenResult tokenResult = ...;
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", tokenResult.AccessToken);

Is there some configuration that I'm missing to enable the injection of Headers?

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Specifications

Version: 24.0.1
Platform: .NET 8
Subsystem: Windows

[raman-m]

Hi
Show all code!
Upload complete solution for review: Program.cs, ocelot.json, and all C# classes.
Why do you sniff the token which was not generated on Ocelot's side?
If token was generated by downstream endpoint then the token must be forwarded to downstream without any changes via anonymous route (no AuthenticationOptions at all).