Fix HttpResponseBase.Cache typing (Fixes #476)

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

@@ -124,6 +124,27 @@ internal HttpCachePolicy() { }
         public void SetMaxAge(System.TimeSpan delta) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
         public void SetOmitVaryStar(bool omit) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
     }
+    public partial class HttpCachePolicyBase
+    {
+        public HttpCachePolicyBase() { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public virtual System.Web.HttpCacheVaryByHeaders VaryByHeaders { get { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} }
+        public virtual void SetCacheability(System.Web.HttpCacheability cacheability) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public virtual void SetCacheability(System.Web.HttpCacheability cacheability, string field) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public virtual void SetExpires(System.DateTime date) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public virtual void SetLastModified(System.DateTime date) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public virtual void SetMaxAge(System.TimeSpan delta) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public virtual void SetOmitVaryStar(bool omit) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+    }
+    public partial class HttpCachePolicyWrapper : System.Web.HttpCachePolicyBase
+    {
+        public HttpCachePolicyWrapper(System.Web.HttpCachePolicy httpCachePolicy) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public override System.Web.HttpCacheVaryByHeaders VaryByHeaders { get { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} }
+        public override void SetCacheability(System.Web.HttpCacheability cacheability) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public override void SetExpires(System.DateTime date) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public override void SetLastModified(System.DateTime date) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public override void SetMaxAge(System.TimeSpan delta) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+        public override void SetOmitVaryStar(bool omit) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
+    }
     public sealed partial class HttpCacheVaryByHeaders
     {
         internal HttpCacheVaryByHeaders() { }
@@ -504,7 +525,7 @@ public partial class HttpResponseBase
     {
         public HttpResponseBase() { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
         public virtual bool BufferOutput { get { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} }
-        public virtual System.Web.HttpCachePolicy Cache { get { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} }
+        public virtual System.Web.HttpCachePolicyBase Cache { get { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} }
         public virtual string Charset { 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 virtual System.Text.Encoding ContentEncoding { 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 virtual string ContentType { 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");} }
@@ -541,7 +562,7 @@ public partial class HttpResponseWrapper : System.Web.HttpResponseBase
     {
         public HttpResponseWrapper(System.Web.HttpResponse response) { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");}
         public override bool BufferOutput { get { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} }
-        public override System.Web.HttpCachePolicy Cache { get { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} }
+        public override System.Web.HttpCachePolicyBase Cache { get { throw new System.PlatformNotSupportedException("Only supported when running on ASP.NET Core or System.Web");} }
         public override string Charset { 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 System.Text.Encoding ContentEncoding { 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 string ContentType { 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");} }

src/Microsoft.AspNetCore.SystemWebAdapters/Generated/TypeForwards.Framework.cs

@@ -26,6 +26,8 @@
 [assembly:System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Web.HttpBrowserCapabilitiesWrapper))]
 [assembly:System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Web.HttpCacheability))]
 [assembly:System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Web.HttpCachePolicy))]
+[assembly:System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Web.HttpCachePolicyBase))]
+[assembly:System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Web.HttpCachePolicyWrapper))]
 [assembly:System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Web.HttpCacheVaryByHeaders))]
 [assembly:System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Web.HttpContext))]
 [assembly:System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Web.HttpContextBase))]

src/Microsoft.AspNetCore.SystemWebAdapters/HttpCachePolicyBase.cs

@@ -0,0 +1,28 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Diagnostics.CodeAnalysis;
+
+namespace System.Web;
+
+public class HttpCachePolicyBase
+{
+    [SuppressMessage("Design", "CA1065:Do not raise exceptions in unexpected locations", Justification = Constants.ApiFromAspNet)]
+    public virtual HttpCacheVaryByHeaders VaryByHeaders => throw new NotImplementedException();
+
+    public virtual void SetCacheability(HttpCacheability cacheability) => throw new NotImplementedException();
+
+    public virtual void SetCacheability(HttpCacheability cacheability, string field) => throw new NotImplementedException();
+
+    [SuppressMessage("Microsoft.Naming", "CA1716:IdentifiersShouldNotMatchKeywords", MessageId = "Date",
+        Justification = "Matches HttpCachePolicy class")]
+    public virtual void SetLastModified(DateTime date) => throw new NotImplementedException();
+
+    public virtual void SetMaxAge(TimeSpan delta) => throw new NotImplementedException();
+
+    [SuppressMessage("Microsoft.Naming", "CA1716:IdentifiersShouldNotMatchKeywords", MessageId = "Date",
+        Justification = "Matches HttpCachePolicy class")]
+    public virtual void SetExpires(DateTime date) => throw new NotImplementedException();
+
+    public virtual void SetOmitVaryStar(bool omit) => throw new NotImplementedException();
+}

src/Microsoft.AspNetCore.SystemWebAdapters/HttpCachePolicyWrapper.cs

@@ -0,0 +1,32 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Web;
+
+public class HttpCachePolicyWrapper : HttpCachePolicyBase
+{
+    private HttpCachePolicy _httpCachePolicy;
+
+    public HttpCachePolicyWrapper(HttpCachePolicy httpCachePolicy)
+    {
+        if (httpCachePolicy == null)
+        {
+			ArgumentNullException.ThrowIfNull(httpCachePolicy);
+        }
+        _httpCachePolicy = httpCachePolicy;
+    }
+
+
+    public override HttpCacheVaryByHeaders VaryByHeaders => _httpCachePolicy.VaryByHeaders;
+
+    public override void SetCacheability(HttpCacheability cacheability) => _httpCachePolicy.SetCacheability(cacheability);
+
+    public override void SetExpires(DateTime date) => _httpCachePolicy.SetExpires(date);
+
+    public override void SetLastModified(DateTime date) => _httpCachePolicy.SetLastModified(date);
+
+    public override void SetMaxAge(TimeSpan delta) => _httpCachePolicy.SetMaxAge(delta);
+
+    public override void SetOmitVaryStar(bool omit) => _httpCachePolicy.SetOmitVaryStar(omit);
+
+}

src/Microsoft.AspNetCore.SystemWebAdapters/HttpResponseBase.cs

@@ -96,7 +96,7 @@ public virtual Stream Filter
             set => throw new NotImplementedException();
         }
 
-        public virtual HttpCachePolicy Cache => throw new NotImplementedException();
+        public virtual HttpCachePolicyBase Cache => throw new NotImplementedException();
 
         public virtual bool IsClientConnected => throw new NotImplementedException();
 

src/Microsoft.AspNetCore.SystemWebAdapters/HttpResponseWrapper.cs

@@ -99,7 +99,7 @@ public override bool TrySkipIisCustomErrors
             set => _response.TrySkipIisCustomErrors = value;
         }
 
-        public override HttpCachePolicy Cache => _response.Cache;
+        public override HttpCachePolicyBase Cache => new HttpCachePolicyWrapper(_response.Cache);
 
         [AllowNull]
         public override Stream Filter