Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

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

@@ -0,0 +1,34 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.ServiceModel.Channels
+{
+    using System.Collections.Generic;
+    using System.Diagnostics;
+    using System.ServiceModel.Diagnostics;
+    using System.ServiceModel.Diagnostics.Application;
+
+    class ReplyChannelAcceptor : SingletonChannelAcceptor<IReplyChannel, ReplyChannel, RequestContext>
+    {
+        public ReplyChannelAcceptor(ChannelManagerBase channelManager)
+            : base(channelManager)
+        {
+        }
+
+        protected override ReplyChannel OnCreateChannel()
+        {
+            return new ReplyChannel(this.ChannelManager, null);
+        }
+
+        protected override void OnTraceMessageReceived(RequestContext requestContext)
+        {
+            if (DiagnosticUtility.ShouldTraceInformation)
+            {
+                TraceUtility.TraceEvent(TraceEventType.Information, TraceCode.MessageReceived,
+                    SR.GetString(SR.TraceCodeMessageReceived),
+                    MessageTransmitTraceRecord.CreateReceiveTraceRecord((requestContext == null) ? null : requestContext.RequestMessage), this, null);
+            }
+        }
+    }
+}