How to determine which port ASP.NET Core 2 is listening on when a dynamic port (0) was specified

Question

I\'ve got an ASP.NET Core 2.0 app which I intend to run as a stand-alone application. The app should start up and bind to an available port. To achieve this I configure the

Answer 1

At least from .Net Core 3 you can inject IServer and get the information.

using System;
using System.Linq;
using Microsoft.AspNetCore.Hosting.Server;
using Microsoft.AspNetCore.Hosting.Server.Features;

namespace MyApp.Controllers
{
    public class ServerInfoController : Controller
    {
        public ServerInfoController (IServer server)
        {
            var addresses = server.Features.Get()?.Addresses?.ToArray();
        }
    }
}