Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using ASPNETCoreSEOTemplate.Helpers;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Rewrite;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

namespace ASPNETCoreSEOTemplate
{
    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.Configure<CookiePolicyOptions>(options =>
            {
                options.CheckConsentNeeded = context => true;
                options.MinimumSameSitePolicy = SameSiteMode.None;
            });
            services.AddRazorPages();
            services.AddRouting(options =>
            {
                options.ConstraintMap["slugify"] = typeof(SlugifyParameterTransformer);
            });
        }

        // 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("/Home/Error");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }

            app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseCookiePolicy();

            app.UseRouting();

            app.UseAuthorization();

            app.UseRewriter(new RewriteOptions().Add(new RedirectLowerCaseRule()).Add(new RedirectEndingSlashCaseRule()));

            if (env.IsProduction())
            {
                app.UseRewriter(new RewriteOptions()
                    .AddRedirectToWwwPermanent());
            }

            app.UseStatusCodePages(async context =>
            {
                context.HttpContext.Response.ContentType = "text/plain";

                if (context.HttpContext.Response.StatusCode == 404)
                {
                    await context.HttpContext.Response.WriteAsync("404 Page Not Found");
                }
                else
                {
                    await context.HttpContext.Response.WriteAsync("Page Error, Status Code: " + context.HttpContext.Response.StatusCode);
                }
            });

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