Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.ServiceModel/System/ServiceModel/PeerResolver.cs

@@ -0,0 +1,23 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.ServiceModel
+{
+    using System.Collections.ObjectModel;
+    using System.ServiceModel.Channels;
+    using System.ServiceModel.Description;
+    using System.ServiceModel.PeerResolvers;
+
+    public abstract class PeerResolver
+    {
+        public abstract bool CanShareReferrals { get; }
+        public abstract object Register(string meshId, PeerNodeAddress nodeAddress, TimeSpan timeout);
+        public abstract ReadOnlyCollection<PeerNodeAddress> Resolve(string meshId, int maxAddresses, TimeSpan timeout);
+        public abstract void Unregister(object registrationId, TimeSpan timeout);
+        public abstract void Update(object registrationId, PeerNodeAddress updatedNodeAddress, TimeSpan timeout);
+        public virtual void Initialize(EndpointAddress address, Binding binding, ClientCredentials credentials, PeerReferralPolicy referralPolicy)
+        {
+        }
+    }
+}
+