Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel/System/ServiceModel/Channels/DelegatingMessage.cs

@@ -0,0 +1,91 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.ServiceModel.Channels
+{
+    using System.Xml;
+    using System.ServiceModel.Channels;
+
+    abstract class DelegatingMessage : Message
+    {
+        Message innerMessage;
+
+        protected DelegatingMessage(Message innerMessage)
+        {
+            if (innerMessage == null)
+            {
+                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("innerMessage");
+            }
+            this.innerMessage = innerMessage;
+        }
+
+        public override bool IsEmpty
+        {
+            get
+            {
+                return this.innerMessage.IsEmpty;
+            }
+        }
+
+        public override bool IsFault
+        {
+            get { return this.innerMessage.IsFault; }
+        }
+
+        public override MessageHeaders Headers
+        {
+            get { return this.innerMessage.Headers; }
+        }
+
+        public override MessageProperties Properties
+        {
+            get { return this.innerMessage.Properties; }
+        }
+
+        public override MessageVersion Version
+        {
+            get { return this.innerMessage.Version; }
+        }
+
+        protected Message InnerMessage
+        {
+            get { return this.innerMessage; }
+        }
+
+        protected override void OnClose()
+        {
+            base.OnClose();
+            this.innerMessage.Close();
+        }
+
+        protected override void OnWriteStartEnvelope(XmlDictionaryWriter writer)
+        {
+            this.innerMessage.WriteStartEnvelope(writer);
+        }
+
+        protected override void OnWriteStartHeaders(XmlDictionaryWriter writer)
+        {
+            this.innerMessage.WriteStartHeaders(writer);
+        }
+
+        protected override void OnWriteStartBody(XmlDictionaryWriter writer)
+        {
+            this.innerMessage.WriteStartBody(writer);
+        }
+
+        protected override void OnWriteBodyContents(XmlDictionaryWriter writer)
+        {
+            this.innerMessage.WriteBodyContents(writer);
+        }
+
+        protected override string OnGetBodyAttribute(string localName, string ns)
+        {
+            return this.innerMessage.GetBodyAttribute(localName, ns);
+        }
+
+        protected override void OnBodyToString(XmlDictionaryWriter writer)
+        {
+            this.innerMessage.BodyToString(writer);
+        }
+    }
+}