Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel/System/ServiceModel/Activation/DuplicateContext.cs

@@ -0,0 +1,45 @@
+//----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//----------------------------------------------------------------------------
+
+namespace System.ServiceModel.Activation
+{
+    using System;
+    using System.IO;
+    using System.Runtime.Serialization;
+    using System.Net.Sockets;
+
+    [DataContract]
+    [KnownType(typeof(TcpDuplicateContext))]
+    [KnownType(typeof(NamedPipeDuplicateContext))]
+    class DuplicateContext
+    {
+        [DataMember]
+        Uri via;
+
+        [DataMember]
+        byte[] readData;
+
+        protected DuplicateContext(Uri via, byte[] readData)
+        {
+            this.via = via;
+            this.readData = readData;
+        }
+
+        public Uri Via
+        {
+            get
+            {
+                return this.via;
+            }
+        }
+
+        public byte[] ReadData
+        {
+            get
+            {
+                return this.readData;
+            }
+        }
+    }
+}