test.cs

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddControllersWithViews();

builder.Services.AddCors(p => p.AddPolicy("corsapp", builder =>
{
   builder.WithOrigins("*").AllowAnyMethod().AllowAnyHeader();
}));

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment()) {
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseCors("corsapp");

// enable Web Sockets
app.UseWebSockets();

// adding the TX Text Control WebSocket middleware
app.UseTXWebSocketMiddleware();

// adding the viewer endpoint routing
app.UseEndpoints(endpoints =>
{
   endpoints.MapControllerRoute(
       name: "default",
       pattern: "{controller=TextControl}/{action}");
});

app.MapControllerRoute(
    name: "default",
    pattern: "{controller}/{action=Index}/{id?}");

app.MapFallbackToFile("index.html"); ;

app.Run();