ReboundEmulator/Program.cs

using Microsoft.AspNetCore.StaticFiles;
using Microsoft.Extensions.FileProviders;

namespace NotPogo
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateBuilder(args);

            // Add services to the container.

            builder.Services.AddControllersWithViews();

            // Add Game Server Hosted Service
            builder.Services.AddHostedService<TCPGameServer>();

            var app = builder.Build();

            var publicAssetsRoot = Path.Combine(AppContext.BaseDirectory, "StaticFiles", "PublicAssets");
            Directory.CreateDirectory(publicAssetsRoot); // avoid a startup crash if it doesn't exist yet, public assets (images, sounds, etc)

            var configRoot = Path.Combine(AppContext.BaseDirectory, "StaticFiles", "Configs");
            Directory.CreateDirectory(configRoot); // configs

            var jarArchiveRoot = Path.Combine(AppContext.BaseDirectory, "StaticFiles", "JARs");
            Directory.CreateDirectory(jarArchiveRoot); // jar files

            var contentTypeProvider = new FileExtensionContentTypeProvider();
            contentTypeProvider.Mappings[".au"] = "audio/basic";   // Java applet sound format
            contentTypeProvider.Mappings[".dat"] = "application/octet-stream"; // Gameblend_GPD binary configs

            app.UseStaticFiles(new StaticFileOptions
            {
                FileProvider = new PhysicalFileProvider(publicAssetsRoot),
                RequestPath = "", // serve at the site root, matching real paths like /applet/images/chat/welcome.jpg
                ContentTypeProvider = contentTypeProvider,
                ServeUnknownFileTypes = true,
                DefaultContentType = "application/octet-stream"
            });

            // Configure the HTTP request pipeline.

            app.UseAuthorization();

            app.MapControllers();

            app.Run();
        }
    }
}