ASP.NET Core X-FORWARDED- Headers

Program.cs

using Microsoft.AspNetCore.HttpOverrides;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorPages();

// Configure the Forwarded Headers
builder.Services.Configure<ForwardedHeadersOptions>(options =>
{
    // Do the -For, -Proto, and -Host X-FORWARDED-* 
    options.ForwardedHeaders =
        ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto | ForwardedHeaders.XForwardedHost;
});

var app = builder.Build();

// Add the middleware to handle the setting of
//
// HttpContext.Connection.RemoteIpAddress: Set using the X-Forwarded-For header value.
// HttpContext.Request.Scheme: Set using the X-Forwarded - Proto header value.
// HttpContext.Request.Host: Set using the X-Forwarded - Host header value.
//
app.UseForwardedHeaders();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
}
app.UseStaticFiles();

app.UseRouting();

app.UseAuthorization();

app.MapRazorPages();

app.Run();