From be53503ec04576d5ef62602f87fdb7d59a6109b2 Mon Sep 17 00:00:00 2001
From: ta264 <ta264@users.noreply.github.com>
Date: Thu, 10 Jun 2021 21:59:11 +0100
Subject: [PATCH] Fixed: Bad login redirect using a reverse proxy

(cherry picked from commit b0f04bb9d79a9f9f0021d179ea7273998be7cab3)
(cherry picked from commit ee81ad2add4819920e17ab8b64165a8131ae8dd0)
---
 src/NzbDrone.Host/Startup.cs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/NzbDrone.Host/Startup.cs b/src/NzbDrone.Host/Startup.cs
index 7037d3ce1..b94d25e9f 100644
--- a/src/NzbDrone.Host/Startup.cs
+++ b/src/NzbDrone.Host/Startup.cs
@@ -9,6 +9,7 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.HttpOverrides;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
@@ -47,6 +48,13 @@ public void ConfigureServices(IServiceCollection services)
                 b.AddNLog();
             });
 
+            services.Configure<ForwardedHeadersOptions>(options =>
+            {
+                options.ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto;
+                options.KnownNetworks.Clear();
+                options.KnownProxies.Clear();
+            });
+
             services.AddRouting(options => options.LowercaseUrls = true);
 
             services.AddResponseCompression();
@@ -143,6 +151,7 @@ public void Configure(IApplicationBuilder app,
                 firewallAdapter.MakeAccessible();
             }
 
+            app.UseForwardedHeaders();
             app.UseMiddleware<LoggingMiddleware>();
             app.UsePathBase(new PathString(configFileProvider.UrlBase));
             app.UseExceptionHandler(new ExceptionHandlerOptions