Get the GetService into HttpContextWrapper

src/Microsoft.AspNetCore.SystemWebAdapters/Generated/Ref.Standard.cs

@@ -208,6 +208,7 @@ public partial class HttpContextWrapper : System.Web.HttpContextBase
         public override System.Security.Principal.IPrincipal User { get { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} set { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} }
         public override void AddError(System.Exception ex) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
         public override void ClearError() { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public override object GetService(System.Type serviceType) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
         public override void RewritePath(string path) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
         public override void RewritePath(string path, bool rebaseClientPath) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
         public override void RewritePath(string filePath, string pathInfo, string queryString) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}

src/Microsoft.AspNetCore.SystemWebAdapters/HttpContext.cs

@@ -162,7 +162,10 @@ public void RewritePath(string filePath, string pathInfo, string? queryString, b
         {
             return Server;
         }
-
+        else if (Context.RequestServices != null)
+        {
+            return Context.RequestServices.GetService(service);
+        }
         return null;
     }
 

src/Microsoft.AspNetCore.SystemWebAdapters/HttpContextWrapper.cs

@@ -81,5 +81,7 @@ public override IPrincipal User
         public override void RewritePath(string filePath, string pathInfo, string? queryString, bool setClientFilePath) => _context.RewritePath(filePath, pathInfo, queryString, setClientFilePath);
 
         public override void SetSessionStateBehavior(SessionStateBehavior sessionStateBehavior) => _context.SetSessionStateBehavior(sessionStateBehavior);
+
+        public override object? GetService(Type serviceType) => ((IServiceProvider)_context).GetService(serviceType);
     }
 }

test/Microsoft.AspNetCore.SystemWebAdapters.CoreServices.Tests/CacheTests.cs

@@ -32,6 +32,10 @@ public void CacheFromHttpContext()
 
             // Assert
             Assert.Same(cache, result);
+
+            //Act via GetService
+            var cacheFromService = context.GetService<Cache>();
+            Assert.Same(cache, cacheFromService);
         }
 
         [Fact]
@@ -54,6 +58,10 @@ public void CacheFromHttpContextWrapper()
 
             // Assert
             Assert.Same(cache, result);
+
+            //Act via GetService
+            var cacheFromService = contextWrapper.GetService<Cache>();
+            Assert.Same(cache, cacheFromService);
         }
     }
 }

test/Microsoft.AspNetCore.SystemWebAdapters.Tests/HttpContextTests.cs

@@ -12,6 +12,7 @@
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.SystemWebAdapters.Features;
 using Microsoft.AspNetCore.SystemWebAdapters.SessionState;
+using Microsoft.Extensions.DependencyInjection;
 using Moq;
 using Xunit;
 
@@ -152,8 +153,8 @@ public void GetServiceReturnsExpected()
             Assert.Same(context.Response, provider.GetService(typeof(HttpResponse)));
             Assert.Same(context.Server, provider.GetService(typeof(HttpServerUtility)));
             Assert.Same(context.Session, provider.GetService(typeof(HttpSessionState)));
-
             Assert.Null(provider.GetService(typeof(HttpContext)));
+            Assert.Null(provider.GetService<Cache>());
         }
 
         [Fact]
@@ -215,6 +216,10 @@ public void CacheFromServices()
 
             // Assert
             Assert.Same(cache, result);
+
+            var provider = (IServiceProvider)context;
+            Assert.NotNull(provider.GetService<Cache>());
+            Assert.Same(cache, provider.GetService<Cache>());
         }
 
         [Fact]