Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,50 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.ServiceModel
+{
+    using System;
+    using System.ServiceModel.Channels;
+    using System.ServiceModel.Security;
+    using System.Net;
+    using System.Net.Security;
+    using System.ComponentModel;
+
+    public sealed class NamedPipeTransportSecurity
+    {
+        internal const ProtectionLevel DefaultProtectionLevel = ProtectionLevel.EncryptAndSign;
+        ProtectionLevel protectionLevel;
+
+        public NamedPipeTransportSecurity()
+        {
+            this.protectionLevel = DefaultProtectionLevel;
+        }
+
+        [DefaultValue(ConnectionOrientedTransportDefaults.ProtectionLevel)]
+        public ProtectionLevel ProtectionLevel
+        {
+            get { return this.protectionLevel; }
+            set
+            {
+                if (!ProtectionLevelHelper.IsDefined(value))
+                {
+                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("value"));
+                }
+                this.protectionLevel = value;
+            }
+        }
+
+        internal WindowsStreamSecurityBindingElement CreateTransportProtectionAndAuthentication()
+        {
+            WindowsStreamSecurityBindingElement result = new WindowsStreamSecurityBindingElement();
+            result.ProtectionLevel = this.protectionLevel;
+            return result;
+        }
+
+        internal static bool IsTransportProtectionAndAuthentication(WindowsStreamSecurityBindingElement wssbe, NamedPipeTransportSecurity transportSecurity)
+        {
+            transportSecurity.protectionLevel = wssbe.ProtectionLevel;
+            return true;
+        }
+    }
+}