Startup.cs

using handnotes.Configurations;
using handnotes.Installers;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

namespace handnotes
{
    public class Startup
    {
        public Startup (IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices (IServiceCollection services)
        {
            //services.AddControllers();
            services.InstallServicesInAssembly(Configuration);
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure (IApplicationBuilder app, IWebHostEnvironment env)
        {

            app.UseSwagger();
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseHsts();
            }
            app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseRouting();
            //app.UseEndpoints(endpoints => { endpoints.MapControllers(); });
            app.UseEndpoints(endpoints =>
            {
                // Create the address endpoint, consisting of our middleware
                var addressEndpoint = endpoints
                    .CreateApplicationBuilder()
                    .UseMiddleware<ServerAddressesMiddleware>()
                    .Build();

                // Register the endpoint
                endpoints.MapGet("/addresses", addressEndpoint);
            });

            #region Swagger Essentials
            // Swagger Configurations
            SwaggerOptions swaggerOptions = new SwaggerOptions();
            Configuration.GetSection(nameof(SwaggerOptions)).Bind(swaggerOptions);
            app.UseSwagger(option => { option.RouteTemplate = swaggerOptions.JsonRoute; });

            // Swagger UI configuration with default path location
            app.UseSwaggerUI(option =>
            {
                option.SwaggerEndpoint(swaggerOptions.UIEndpoint, swaggerOptions.Description);
                option.RoutePrefix = string.Empty;
            });
            #endregion
        }
    }
}