using System;

using System.Linq;

using System.Net.Http;

using System.Threading.Tasks;

using Microsoft.Extensions.Hosting;

using Microsoft.AspNetCore.Builder;

using Microsoft.AspNetCore.Hosting.Server;

using Microsoft.AspNetCore.Hosting.Server.Features;

public class Program

{

    public static async Task Main()

    {

​

        var builder = WebApplication.CreateBuilder();

        var app = builder.Build();

        app.MapGet("/test", () => "Test");

​

        Task.Run(() => app.Run());

​

        IHostApplicationLifetime lifetime = app.Lifetime;

        lifetime.ApplicationStarted.Register(() =>

        {

            var server = app.Services.GetService(typeof(IServer)) as IServer;

            var addressesFeature = server?.Features.Get<IServerAddressesFeature>();

            var baseAddress = addressesFeature?.Addresses.FirstOrDefault(); // http://[::]:8080

            //This is only required in dotnet fiddle

            baseAddress = "http://localhost:8080";

​

            var client = new HttpClient();

            var response = client.GetAsync($"{baseAddress}/test").Result;

            Console.WriteLine(response.Content.ReadAsStringAsync().Result);

        });

​

        await Task.Delay(2000);

    }

}