#define FIRST // FIRST
#if NEVER
#elif FIRST
// <snippet_1>
using Microsoft.AspNetCore.HttpOverrides;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddAuthentication();

var app = builder.Build();

app.UseForwardedHeaders(new ForwardedHeadersOptions
{
    ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
});

app.UseAuthentication();

app.MapGet("/", () => "Hello ForwardedHeadersOptions!");

app.Run();
// </snippet_1>
#else
// <snippet_all>
using Microsoft.AspNetCore.HttpOverrides;
using System.Net;

var builder = WebApplication.CreateBuilder(args);

// Configure forwarded headers
builder.Services.Configure<ForwardedHeadersOptions>(options =>
{
    options.KnownProxies.Add(IPAddress.Parse("10.0.0.100"));
});

builder.Services.AddAuthentication();

var app = builder.Build();

app.UseForwardedHeaders(new ForwardedHeadersOptions
{
    ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
});

app.UseAuthentication();

app.MapGet("/", () => "10.0.0.100");

app.Run();
// </snippet_all>
#endif