Duplication madness

Author: JunTaoLuo

src/Microsoft.AspNetCore.Http/Internal/ResponseCookies.cs

@@ -62,7 +62,7 @@ public void Append(string key, string value, CookieOptions options)
                 Path = options.Path,
                 Expires = options.Expires,
                 Secure = options.Secure,
-                SameSite = options.SameSite,
+                SameSite = ConvertSameSiteEnforcementMode(options.SameSite),
                 HttpOnly = options.HttpOnly
             };
 
@@ -131,5 +131,20 @@ public void Delete(string key, CookieOptions options)
                 Expires = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc),
             });
         }
+
+        private Net.Http.Headers.SameSiteEnforcementMode ConvertSameSiteEnforcementMode(SameSiteEnforcementMode sameSite)
+        {
+            if (sameSite == SameSiteEnforcementMode.Lax)
+            {
+                return Net.Http.Headers.SameSiteEnforcementMode.Lax;
+            }
+
+            if (sameSite == SameSiteEnforcementMode.Strict)
+            {
+                return Net.Http.Headers.SameSiteEnforcementMode.Strict;
+            }
+
+            return Net.Http.Headers.SameSiteEnforcementMode.None;
+        }
     }
 }

src/Microsoft.Net.Http.Headers/Microsoft.Net.Http.Headers.csproj

@@ -12,10 +12,6 @@
     <EnableApiCheck>false</EnableApiCheck>
   </PropertyGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\Microsoft.AspNetCore.Http.Features\Microsoft.AspNetCore.Http.Features.csproj" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Primitives" Version="$(AspNetCoreVersion)" />
   </ItemGroup>

src/Microsoft.Net.Http.Headers/SameSiteEnforcementMode.cs

@@ -0,0 +1,12 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+namespace Microsoft.Net.Http.Headers
+{
+    public enum SameSiteEnforcementMode
+    {
+        None = 0,
+        Lax,
+        Strict
+    }
+}

src/Microsoft.Net.Http.Headers/SetCookieHeaderValue.cs

@@ -5,7 +5,6 @@
 using System.Collections.Generic;
 using System.Diagnostics.Contracts;
 using System.Text;
-using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Primitives;
 
 namespace Microsoft.Net.Http.Headers

test/Microsoft.Net.Http.Headers.Tests/SetCookieHeaderValueTest.cs

@@ -5,7 +5,6 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using Microsoft.AspNetCore.Http;
 using Xunit;
 
 namespace Microsoft.Net.Http.Headers