KestrelApp/KestrelApp.Fiddler/Program.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Serilog;

namespace KestrelApp.Fiddler
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateBuilder(args);

            builder.Services
                .AddFiddler()
                .AddControllers();

            builder.Host.UseSerilog((hosting, logger) =>
            {
                logger.ReadFrom
                    .Configuration(hosting.Configuration)
                    .Enrich.FromLogContext().WriteTo.Console(outputTemplate: "{Timestamp:O} [{Level:u3}]{NewLine}{SourceContext}{NewLine}{Message:lj}{NewLine}{Exception}{NewLine}");
            });

            builder.WebHost.ConfigureKestrel((context, kestrel) =>
            {
                var section = context.Configuration.GetSection("Kestrel");
                kestrel.Configure(section).Endpoint("Fiddler", endpoint => endpoint.ListenOptions.UseFiddler());
            });

            var app = builder.Build();
            app.UseRouting();
            app.UseFiddler();

            app.MapControllerRoute(
               name: "default",
               pattern: "{controller=Home}/{action=Index}/{id?}");

            app.Run();
        }
    }
}