ASP.NET Core by Ken

Implementing a Custom DelegatingHandler

To create a custom DelegatingHandler:

Inherit from DelegatingHandler:

public class CustomHandler : DelegatingHandler
{
    protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
    {
        // Pre-processing logic
        var response = await base.SendAsync(request, cancellationToken);
        // Post-processing logic
        return response;
    }
}

Register the Handler:
In ASP.NET Core, register the handler using IHttpClientFactory:

CustomHandler

AspNetCore

HttpClientFactory

Middleware

RequestProcessing