I have an app that needs to have two separate web applications, listening on different ports, for different uses.

I feel like the way I’m currently doing it is messy, or possibly dangerous.

My current approach is:

• Have my main Program be a subclass of IHostedService
• In my static Main(), create an IHostBuilder and configure services with:
  • services.AddHostedService<MyProgram>();
  • services.AddSingleton<WebApplication1>();
  • services.AddSingleton<WebApplication2>();
• MyProgram then gets instances of both WebApplication1 and WebApplication2
• And then in MyProgram.StartAsync(), I call:
  • _webApp1.Initialize();
  • _webApp2.Initialize();
  • await Task.WhenAll(_webApp1.Start(), _webApp2.Start());
  • Where Initialize() creates the internal WebApplication using a WebApplicationBuilder
  • Start() starts the internal WebApplication running

I’ve had to jump through some DI hoops to get some instances shared between the two WebApplications, so I was hoping there might be a better way of doing this.