Using HttpWebRequest when Stripping Assemblies

Hi, I have a problem similar to this one: http://answers.unity3d.com/answers/612479/post.html. While stripping assemblies (first level of stripping) our app cannot successfully complete purchases and returns this: WebException: Error: ConnectFailure System.Net.HttpWebRequest.EndGetRequestStream (IAsyncResult asyncResult) System.Net.HttpWebRequest.GetRequestStream() OurScript+c__Iterator53.MoveNext() The important part is the stream stuff. Here is our link file: I cannot track down the right namespace / type for GetRequestStream or EndGetRequestStream for the life of me. MSDN provides some information, but as you can see from the link file, I've already put what I thought would allow this System.Net.Http functionality. My question is, for you .NET guru's and Link.xml extraordinaires, what the hell kind of type / namespace am I suppose to stop from being stripped if not HttpWebResponse!