Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.IdentityModel/System/IdentityModel/Tokens/AudienceRestriction.cs

@@ -0,0 +1,53 @@
+//------------------------------------------------------------------------------
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+using System;
+using System.Collections.ObjectModel;
+using System.IdentityModel.Selectors;
+
+namespace System.IdentityModel.Tokens
+{
+    /// <summary>
+    /// Defines settings for a AudienceRestriction verification.
+    /// </summary>
+    public class AudienceRestriction
+    {
+        AudienceUriMode _audienceMode = AudienceUriMode.Always;
+        Collection<Uri> _audience = new Collection<Uri>();
+
+        /// <summary>
+        /// Creates an instance of <see cref="AudienceRestriction"/>
+        /// </summary>
+        public AudienceRestriction()
+        {
+        }
+
+        /// <summary>
+        /// Creates an instance of <see cref="AudienceRestriction"/>
+        /// </summary>
+        /// <param name="audienceMode">Specifies the mode in which AudienceUri restriction is applied.</param>
+        public AudienceRestriction( AudienceUriMode audienceMode )
+        {
+            _audienceMode = audienceMode;
+        }
+
+        /// <summary>
+        /// Gets/Sets the mode in which Audience URI restriction is applied.
+        /// </summary>
+        public AudienceUriMode AudienceMode
+        {
+            get { return _audienceMode; }
+            set { _audienceMode = value; }
+        }
+
+        /// <summary>
+        /// Gets the list of Allowed Audience URIs.
+        /// </summary>
+        public Collection<Uri> AllowedAudienceUris
+        {
+            get { return _audience; }
+        }
+    }
+
+}