Program.cs

varbuilder=WebApplication.CreateBuilder();
builder.WebHost.ConfigureKestrel(k =>
{
k.ListenLocalhost(8111);
k.ListenLocalhost(8112);
});

varapp=builder.Build();

app.MapGet("/",async context =>
{
awaitcontext.Response.WriteAsync("hello world from http://localhost:8111");
}).WithMetadata(newHostAttribute("localhost:8111"));

app.MapGet("/",async context =>
{
awaitcontext.Response.WriteAsync("hello world from http://localhost:8112");
}).WithMetadata(newHostAttribute("localhost:8112"));

app.Run();