Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.ServiceModel/System/ServiceModel/Channels/RequestContext.cs

@@ -0,0 +1,32 @@
+//----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//----------------------------------------------------------------------------
+namespace System.ServiceModel.Channels
+{
+    using System;
+
+    public abstract class RequestContext : IDisposable
+    {
+        public abstract Message RequestMessage { get; }
+
+        public abstract void Abort();
+
+        public abstract void Close();
+        public abstract void Close(TimeSpan timeout);
+
+        public abstract void Reply(Message message);
+        public abstract void Reply(Message message, TimeSpan timeout);
+        public abstract IAsyncResult BeginReply(Message message, AsyncCallback callback, object state);
+        public abstract IAsyncResult BeginReply(Message message, TimeSpan timeout, AsyncCallback callback, object state);
+        public abstract void EndReply(IAsyncResult result);
+
+        void IDisposable.Dispose()
+        {
+            this.Dispose(true);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+        }
+    }
+}