Startup.cs

using AA.DIDApi.Models;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Server.Kestrel.Core;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System;

namespace AA.DIDApi
{
    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.AddControllersWithViews();

            services.AddCors(o => o.AddPolicy("MyPolicy", builder =>
            {
                builder.AllowAnyOrigin()
                       .AllowAnyMethod()
                       .AllowAnyHeader();
            }));

            services.Configure<AppSettingsModel>(Configuration.GetSection("AppSettings"));

            // If using Kestrel:
            services.Configure<KestrelServerOptions>(options =>
            {
                options.AllowSynchronousIO = true;
            });

            // If using IIS:
            services.Configure<IISServerOptions>(options =>
            {
                options.AllowSynchronousIO = true;
            });

            // The following line enables Application Insights telemetry collection.
            services.AddApplicationInsightsTelemetry(Configuration["APPINSIGHTS_CONNECTIONSTRING"]);

            services.AddSession(options =>
            {
                options.IdleTimeout = TimeSpan.FromMinutes(10);
                options.Cookie.HttpOnly = true;
                options.Cookie.IsEssential = true;
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/index.html");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }
            if (!env.IsDevelopment())
            {
                app.UseHttpsRedirection();
            }
            app.UseDefaultFiles();
            app.UseStaticFiles();
            app.UseCors("MyPolicy");
            app.UseRouting();
            app.UseAuthorization();
            app.UseSession();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapDefaultControllerRoute();
            });

            Environment.SetEnvironmentVariable("INMEM-API-KEY", Guid.NewGuid().ToString());
        }
    }
}