Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.ServiceModel/System/ServiceModel/Channels/TerminateSequence.cs

@@ -0,0 +1,90 @@
+//----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//----------------------------------------------------------------------------
+namespace System.ServiceModel.Channels
+{
+    using System;
+    using System.Runtime;
+    using System.ServiceModel;
+    using System.Xml;
+
+    sealed class TerminateSequence : BodyWriter
+    {
+        UniqueId identifier;
+        Int64 lastMsgNumber;
+        ReliableMessagingVersion reliableMessagingVersion;
+
+        public TerminateSequence()
+            : base(true)
+        {
+        }
+
+        public TerminateSequence(ReliableMessagingVersion reliableMessagingVersion, UniqueId identifier, Int64 last)
+            : base(true)
+        {
+            this.reliableMessagingVersion = reliableMessagingVersion;
+            this.identifier = identifier;
+            this.lastMsgNumber = last;
+        }
+
+        public static TerminateSequenceInfo Create(ReliableMessagingVersion reliableMessagingVersion,
+            XmlDictionaryReader reader)
+        {
+            if (reader == null)
+            {
+                Fx.Assert("Argument reader cannot be null.");
+            }
+
+            TerminateSequenceInfo terminateSequenceInfo = new TerminateSequenceInfo();
+            WsrmFeb2005Dictionary wsrmFeb2005Dictionary = XD.WsrmFeb2005Dictionary;
+            XmlDictionaryString wsrmNs = WsrmIndex.GetNamespace(reliableMessagingVersion);
+
+            reader.ReadStartElement(wsrmFeb2005Dictionary.TerminateSequence, wsrmNs);
+
+            reader.ReadStartElement(wsrmFeb2005Dictionary.Identifier, wsrmNs);
+            terminateSequenceInfo.Identifier = reader.ReadContentAsUniqueId();
+            reader.ReadEndElement();
+
+            if (reliableMessagingVersion == ReliableMessagingVersion.WSReliableMessaging11)
+            {
+                if (reader.IsStartElement(DXD.Wsrm11Dictionary.LastMsgNumber, wsrmNs))
+                {
+                    reader.ReadStartElement();
+                    terminateSequenceInfo.LastMsgNumber = WsrmUtilities.ReadSequenceNumber(reader, false);
+                    reader.ReadEndElement();
+                }
+            }
+
+            while (reader.IsStartElement())
+            {
+                reader.Skip();
+            }
+
+            reader.ReadEndElement();
+
+            return terminateSequenceInfo;
+        }
+
+        protected override void OnWriteBodyContents(XmlDictionaryWriter writer)
+        {
+            WsrmFeb2005Dictionary wsrmFeb2005Dictionary = XD.WsrmFeb2005Dictionary;
+            XmlDictionaryString wsrmNs = WsrmIndex.GetNamespace(this.reliableMessagingVersion);
+            writer.WriteStartElement(wsrmFeb2005Dictionary.TerminateSequence, wsrmNs);
+            writer.WriteStartElement(wsrmFeb2005Dictionary.Identifier, wsrmNs);
+            writer.WriteValue(this.identifier);
+            writer.WriteEndElement();
+
+            if (this.reliableMessagingVersion == ReliableMessagingVersion.WSReliableMessaging11)
+            {
+                if (this.lastMsgNumber > 0)
+                {
+                    writer.WriteStartElement(DXD.Wsrm11Dictionary.LastMsgNumber, wsrmNs);
+                    writer.WriteValue(this.lastMsgNumber);
+                    writer.WriteEndElement();
+                }
+            }
+
+            writer.WriteEndElement();
+        }
+    }
+}