Merge pull request #3508 from BaronGreenback/nullable

Part 1: nullable Emby.DLNA

Emby.Dlna/Api/DlnaServerService.cs

@@ -11,6 +11,7 @@ using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Dlna;
 using MediaBrowser.Controller.Net;
 using MediaBrowser.Model.Services;
+using Microsoft.AspNetCore.Http;
 
 namespace Emby.Dlna.Api
 {
@@ -108,7 +109,7 @@ namespace Emby.Dlna.Api
         public string Filename { get; set; }
     }
 
-    public class DlnaServerService : IService, IRequiresRequest
+    public class DlnaServerService : IService
     {
         private const string XMLContentType = "text/xml; charset=UTF-8";
 
@@ -127,11 +128,13 @@ namespace Emby.Dlna.Api
         public DlnaServerService(
             IDlnaManager dlnaManager,
             IHttpResultFactory httpResultFactory,
-            IServerConfigurationManager configurationManager)
+            IServerConfigurationManager configurationManager,
+            IHttpContextAccessor httpContextAccessor)
         {
             _dlnaManager = dlnaManager;
             _resultFactory = httpResultFactory;
             _configurationManager = configurationManager;
+            Request = httpContextAccessor?.HttpContext.GetServiceStackRequest() ?? throw new ArgumentNullException(nameof(httpContextAccessor));
         }
 
         private string GetHeader(string name)

Emby.Server.Implementations/Services/ServiceController.cs

@@ -189,5 +189,4 @@ namespace Emby.Server.Implementations.Services
             return ServiceExecGeneral.Execute(serviceType, req, service, requestDto, requestType.GetMethodName());
         }
     }
-
 }

Emby.Server.Implementations/Services/ServiceHandler.cs

@@ -6,6 +6,7 @@ using System.Reflection;
 using System.Threading;
 using System.Threading.Tasks;
 using Emby.Server.Implementations.HttpServer;
+using MediaBrowser.Common.Extensions;
 using MediaBrowser.Model.Services;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Logging;
@@ -79,6 +80,7 @@ namespace Emby.Server.Implementations.Services
 
             httpHost.ApplyRequestFilters(httpReq, httpRes, request);
             
+            httpRes.HttpContext.SetServiceStackRequest(httpReq);
             var response = await httpHost.ServiceController.Execute(httpHost, request, httpReq).ConfigureAwait(false);
 
             // Apply response filters

MediaBrowser.Common/Extensions/HttpContextExtensions.cs

@@ -0,0 +1,33 @@
+using MediaBrowser.Model.Services;
+using Microsoft.AspNetCore.Http;
+
+namespace MediaBrowser.Common.Extensions
+{
+    /// <summary>
+    /// Static class containing extension methods for <see cref="HttpContext"/>.
+    /// </summary>
+    public static class HttpContextExtensions
+    {
+        private const string ServiceStackRequest = "ServiceStackRequest";
+
+        /// <summary>
+        /// Set the ServiceStack request.
+        /// </summary>
+        /// <param name="httpContext">The HttpContext instance.</param>
+        /// <param name="request">The service stack request instance.</param>
+        public static void SetServiceStackRequest(this HttpContext httpContext, IRequest request)
+        {
+            httpContext.Items[ServiceStackRequest] = request;
+        }
+
+        /// <summary>
+        /// Get the ServiceStack request.
+        /// </summary>
+        /// <param name="httpContext">The HttpContext instance.</param>
+        /// <returns>The service stack request instance.</returns>
+        public static IRequest GetServiceStackRequest(this HttpContext httpContext)
+        {
+            return (IRequest)httpContext.Items[ServiceStackRequest];
+        }
+    }
+}