From 25bc15ab02b89d913772409a752cdfe40f70e4c3 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 2 Jun 2020 19:07:27 +0800
Subject: fix: not recognize forwarded https protocal.

---
 Timeline/Startup.cs | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

(limited to 'Timeline')

diff --git a/Timeline/Startup.cs b/Timeline/Startup.cs
index 09281551..5dbc99e6 100644
--- a/Timeline/Startup.cs
+++ b/Timeline/Startup.cs
@@ -97,10 +97,20 @@ namespace Timeline
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app)
         {
-            app.UseForwardedHeaders(new ForwardedHeadersOptions
+            if (string.Equals(System.Environment.GetEnvironmentVariable("ASPNETCORE_FORWARDEDHEADERS_ENABLED"), "true", StringComparison.OrdinalIgnoreCase))
             {
-                ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
-            });
+                var options = new ForwardedHeadersOptions
+                {
+                    ForwardedHeaders = ForwardedHeaders.XForwardedFor |
+                    ForwardedHeaders.XForwardedProto
+                };
+                // Only loopback proxies are allowed by default.
+                // Clear that restriction because forwarders are enabled by explicit 
+                // configuration.
+                options.KnownNetworks.Clear();
+                options.KnownProxies.Clear();
+                app.UseForwardedHeaders(options);
+            }
 
             app.UseRouting();
 
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