From df65e3ab0db8fd55a6a02b8c067565abc926136f Mon Sep 17 00:00:00 2001
From: ConfusedPolarBear <33811686+ConfusedPolarBear@users.noreply.github.com>
Date: Sat, 2 May 2020 15:29:05 -0500
Subject: [PATCH] Add Access-Control-Allow-Origin header to exceptions

Fixes #1794
---
 Emby.Server.Implementations/HttpServer/HttpListenerHost.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Emby.Server.Implementations/HttpServer/HttpListenerHost.cs b/Emby.Server.Implementations/HttpServer/HttpListenerHost.cs
index 211a0c1d99..77878eacc9 100644
--- a/Emby.Server.Implementations/HttpServer/HttpListenerHost.cs
+++ b/Emby.Server.Implementations/HttpServer/HttpListenerHost.cs
@@ -542,6 +542,11 @@ namespace Emby.Server.Implementations.HttpServer
                     var requestInnerEx = GetActualException(requestEx);
                     var statusCode = GetStatusCode(requestInnerEx);
 
+                    if (!httpRes.Headers.ContainsKey("Access-Control-Allow-Origin"))
+                    {
+                        httpRes.Headers.Add("Access-Control-Allow-Origin", "*");
+                    }
+
                     // Do not handle 500 server exceptions manually when in development mode
                     // The framework-defined development exception page will be returned instead
                     if (statusCode == 500 && _hostEnvironment.IsDevelopment())