c# - HttpRequestMessage で X509 証明書を送信する (dnxcore50)

Question

Mac で実行されている .NET Core を使用して外部 API への POST 要求にクライアント証明書を含める方法についてのアイデアはありますか? nupkgWebRequestHandlerからこれを実行しますが、利用できないようです。.Microsoft.Net.HttpDNXCore,Version=v5.0 error CS0246: The type or namespace name 'WebRequestHandler' could not be found

using System.Net.Http;

public class ServiceWrapper {
    public void Post() {
        var handler = new WebRequestHandler();

    }

}

project.json からの依存関係:

"dependencies": {
"Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final",
"Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
"Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
"Microsoft.AspNet.StaticFiles": "1.0.0-rc1-final",
"Microsoft.Extensions.Configuration.FileProviderExtensions": "1.0.0-rc1-final",
"Microsoft.Extensions.Logging": "1.0.0-rc1-final",
"Microsoft.Extensions.Logging.Console": "1.0.0-rc1-final",
"Microsoft.Extensions.Logging.Debug": "1.0.0-rc1-final",
"Dapper": "1.50.0-beta8",
"Autofac": "4.0.0-rc1-177",
"Autofac.Extensions.DependencyInjection": "4.0.0-rc1-177",
"AutoMapper": "4.2.1",
"System.Xml.XmlSerializer": "4.0.11-beta-23516",
"Microsoft.AspNet.WebApi.Client": "5.2.3",
"Microsoft.Net.Http": "2.2.29",
"Microsoft.Net.Http.Client": "1.0.0-beta8-15501"
}

私の ~/.config/nuget/nuget.config:

<configuration>
  <packageSources>
    <add key="vnext" value="https://www.myget.org/F/aspnetvnext/api/v2" />
    <add key="Official NuGet Gallery" value="https://www.nuget.org/api/v2/" />
  </packageSources>
  <activePackageSource>
    <add key="Official NuGet Gallery" value="https://www.nuget.org/api/v2/" />
  </activePackageSource>
</configuration>