From d819a1d92827f6a8c8b3b5289a4ca306a9f098ed Mon Sep 17 00:00:00 2001
From: BaronGreenback <jimcartlidge@yahoo.co.uk>
Date: Wed, 3 Mar 2021 14:41:18 +0000
Subject: [PATCH] Remove Content-Length header from DLNA HEAD request (#5335)

---
 Emby.Dlna/PlayTo/PlayToController.cs              | 2 +-
 Jellyfin.Api/Helpers/FileStreamResponseHelpers.cs | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/Emby.Dlna/PlayTo/PlayToController.cs b/Emby.Dlna/PlayTo/PlayToController.cs
index e4923b9eb..5abc1bc13 100644
--- a/Emby.Dlna/PlayTo/PlayToController.cs
+++ b/Emby.Dlna/PlayTo/PlayToController.cs
@@ -132,7 +132,7 @@ namespace Emby.Dlna.PlayTo
 
         private async void OnDeviceMediaChanged(object sender, MediaChangedEventArgs e)
         {
-            if (_disposed)
+            if (_disposed || string.IsNullOrEmpty(e.OldMediaInfo.Url))
             {
                 return;
             }
diff --git a/Jellyfin.Api/Helpers/FileStreamResponseHelpers.cs b/Jellyfin.Api/Helpers/FileStreamResponseHelpers.cs
index 89d36ab09..f828b1d9d 100644
--- a/Jellyfin.Api/Helpers/FileStreamResponseHelpers.cs
+++ b/Jellyfin.Api/Helpers/FileStreamResponseHelpers.cs
@@ -107,7 +107,8 @@ namespace Jellyfin.Api.Helpers
             // Headers only
             if (isHeadRequest)
             {
-                return new FileContentResult(Array.Empty<byte>(), contentType);
+                httpContext.Response.Headers[HeaderNames.ContentType] = contentType;
+                return new OkResult();
             }
 
             var transcodingLock = transcodingJobHelper.GetTranscodingLock(outputPath);