From 81c23200e4e0788a036167f3710bcc4323528c40 Mon Sep 17 00:00:00 2001
From: "MisterMik [MSFT]" <15340423+mistermik@users.noreply.github.com>
Date: Thu, 25 Jan 2024 20:33:13 -0800
Subject: [PATCH] Update Program.cs

App always redirect to localhost and not the current domain so, this does not work when using codespaces as the callback is a public domain.
Fixing this problem  by using UseForwardedHeaders, you ensure that your application correctly handles requests in scenarios where it is behind a proxy, which can affect URL generation and redirection.
---
 Quickstart/Sample/Program.cs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/Quickstart/Sample/Program.cs b/Quickstart/Sample/Program.cs
index 848f20b..719150c 100644
--- a/Quickstart/Sample/Program.cs
+++ b/Quickstart/Sample/Program.cs
@@ -1,4 +1,4 @@
-using Auth0.AspNetCore.Authentication;
+using Auth0.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
@@ -8,6 +8,7 @@
 using System.Net;
 
 using Microsoft.IdentityModel.Logging;
+using Microsoft.AspNetCore.HttpOverrides;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -34,6 +35,14 @@
 app.UseCookiePolicy();
 
 app.UseRouting();
+   
+    var fordwardedHeaderOptions = new ForwardedHeadersOptions
+    {
+        ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto | ForwardedHeaders.XForwardedHost
+    };
+    fordwardedHeaderOptions.KnownNetworks.Clear();
+    fordwardedHeaderOptions.KnownProxies.Clear();
+app.UseForwardedHeaders(fordwardedHeaderOptions);
 app.UseAuthentication();
 app.UseAuthorization();
 app.UseEndpoints(endpoints =>
@@ -41,4 +50,4 @@
     endpoints.MapDefaultControllerRoute();
 });
 
-app.Run();
\ No newline at end of file
+app.Run();