Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.ServiceModel/System/ServiceModel/DuplexClientBase.cs

@@ -0,0 +1,75 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.ServiceModel
+{
+    using System.ServiceModel.Channels;
+    using System.ServiceModel.Description;
+
+    public abstract class DuplexClientBase<TChannel> : ClientBase<TChannel>
+        where TChannel : class
+    {
+        // IMPORTANT: any changes to the set of protected .ctors of this class need to be reflected
+        // in ServiceContractGenerator.cs as well.
+
+        protected DuplexClientBase(object callbackInstance)
+            : this(new InstanceContext(callbackInstance))
+        {
+        }
+        protected DuplexClientBase(object callbackInstance, string endpointConfigurationName)
+            : this(new InstanceContext(callbackInstance), endpointConfigurationName)
+        {
+        }
+        protected DuplexClientBase(object callbackInstance, string endpointConfigurationName, string remoteAddress)
+            : this(new InstanceContext(callbackInstance), endpointConfigurationName, remoteAddress)
+        {
+        }
+        protected DuplexClientBase(object callbackInstance, string endpointConfigurationName, EndpointAddress remoteAddress)
+            : this(new InstanceContext(callbackInstance), endpointConfigurationName, remoteAddress)
+        {
+        }
+        protected DuplexClientBase(object callbackInstance, Binding binding, EndpointAddress remoteAddress)
+            : this(new InstanceContext(callbackInstance), binding, remoteAddress)
+        {
+        }
+
+        protected DuplexClientBase(object callbackInstance, ServiceEndpoint endpoint)
+            : this(new InstanceContext(callbackInstance), endpoint)
+        {
+        }
+
+        protected DuplexClientBase(InstanceContext callbackInstance)
+            : base(callbackInstance)
+        {
+        }
+        protected DuplexClientBase(InstanceContext callbackInstance, string endpointConfigurationName)
+            : base(callbackInstance, endpointConfigurationName)
+        {
+        }
+        protected DuplexClientBase(InstanceContext callbackInstance, string endpointConfigurationName, string remoteAddress)
+            : base(callbackInstance, endpointConfigurationName, remoteAddress)
+        {
+        }
+        protected DuplexClientBase(InstanceContext callbackInstance, string endpointConfigurationName, EndpointAddress remoteAddress)
+            : base(callbackInstance, endpointConfigurationName, remoteAddress)
+        {
+        }
+        protected DuplexClientBase(InstanceContext callbackInstance, Binding binding, EndpointAddress remoteAddress)
+            : base(callbackInstance, binding, remoteAddress)
+        {
+        }
+
+        protected DuplexClientBase(InstanceContext callbackInstance, ServiceEndpoint endpoint)
+            : base(callbackInstance, endpoint)
+        {
+        }
+
+        public IDuplexContextChannel InnerDuplexChannel
+        {
+            get
+            {
+                return (IDuplexContextChannel)InnerChannel;
+            }
+        }
+    }
+}