Startup.cs

using System.IO;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Server.Kestrel;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;

namespace MVCCoreHTTPS
{
    public class Startup
    {
        public string certfile { get; set; }
        public Startup(IHostingEnvironment env)
        {
            certfile = Path.Combine(env.ContentRootPath, "coremvc.pfx");
        }

        public IConfiguration Configuration { get; set; }
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvcCore();
            services.Configure<KestrelServerOptions>(options =>
            {
                options.UseHttps(certfile,"jollof");
                options.UseConnectionLogging();
            });
        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole();

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseMvcWithDefaultRoute();
            app.Run(async (context) =>
            {
                await context.Response.WriteAsync("Hello World");
            });
        }
    }
}