Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,74 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//-----------------------------------------------------------------------------
+
+namespace System.ServiceModel.Channels
+{
+    using System.Runtime;
+
+    abstract class ChannelAcceptor<TChannel> : CommunicationObject, IChannelAcceptor<TChannel>
+        where TChannel : class, IChannel
+    {
+        ChannelManagerBase channelManager;
+
+        protected ChannelAcceptor(ChannelManagerBase channelManager)
+        {
+            this.channelManager = channelManager;
+        }
+
+        protected ChannelManagerBase ChannelManager
+        {
+            get { return channelManager; }
+        }
+
+        protected override TimeSpan DefaultCloseTimeout
+        {
+            get { return this.channelManager.InternalCloseTimeout; }
+        }
+
+        protected override TimeSpan DefaultOpenTimeout
+        {
+            get { return this.channelManager.InternalOpenTimeout; }
+        }
+
+        public abstract TChannel AcceptChannel(TimeSpan timeout);
+        public abstract IAsyncResult BeginAcceptChannel(TimeSpan timeout, AsyncCallback callback, object state);
+        public abstract TChannel EndAcceptChannel(IAsyncResult result);
+
+        public abstract bool WaitForChannel(TimeSpan timeout);
+        public abstract IAsyncResult BeginWaitForChannel(TimeSpan timeout, AsyncCallback callback, object state);
+        public abstract bool EndWaitForChannel(IAsyncResult result);
+
+        protected override void OnAbort()
+        {
+        }
+
+        protected override IAsyncResult OnBeginClose(TimeSpan timeout, AsyncCallback callback, object state)
+        {
+            return new CompletedAsyncResult(callback, state);
+        }
+
+        protected override void OnEndClose(IAsyncResult result)
+        {
+            CompletedAsyncResult.End(result);
+        }
+
+        protected override void OnClose(TimeSpan timeout)
+        {
+        }
+
+        protected override IAsyncResult OnBeginOpen(TimeSpan timeout, AsyncCallback callback, object state)
+        {
+            return new CompletedAsyncResult(callback, state);
+        }
+
+        protected override void OnEndOpen(IAsyncResult result)
+        {
+            CompletedAsyncResult.End(result);
+        }
+
+        protected override void OnOpen(TimeSpan timeout)
+        {
+        }
+    }
+}