Parse termination reason and propagate the error to the Session interface.

remoting/protocol/jingle_messages.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_PROTOCOL_JINGLE_MESSAGES_H_
 #define REMOTING_PROTOCOL_JINGLE_MESSAGES_H_
 
 #include <list>
 #include <string>
 
@@ skipping 15 matching lines @@
 
 struct JingleMessage {
   enum ActionType {
     UNKNOWN_ACTION,
     SESSION_INITIATE,
     SESSION_ACCEPT,
     SESSION_TERMINATE,
     TRANSPORT_INFO,
   };
 
+  enum Reason {
+    // Currently only termination reasons that can be sent by the host
+    // are understood. All others are converted to UNKNOWN_REASON.
+    UNKNOWN_REASON,
+    SUCCESS,
+    DECLINE,
+    INCOMPATIBLE_PARAMETERS,
+  };
+
   JingleMessage();
   JingleMessage(const std::string& to_value,
                 ActionType action_value,
                 const std::string& sid_value);
   ~JingleMessage();
 
   // Caller keeps ownership of |stanza|.
   static bool IsJingleMessage(const buzz::XmlElement* stanza);
 
   // Caller keeps ownership of |stanza|. |error| is set to debug error
   // message when parsing fails.
   bool ParseXml(const buzz::XmlElement* stanza, std::string* error);
 
   buzz::XmlElement* ToXml();
 
   std::string from;
   std::string to;
   ActionType action;
   std::string sid;
 
   scoped_ptr<ContentDescription> description;
   std::list<cricket::Candidate> candidates;
 
-  buzz::QName termination_reason;
+  // Value from the <reason> tag if it is present in the
+  // message. Useful mainly for session-terminate messages, but Jingle
+  // spec allows it in any message.
+  Reason reason;
 };
 
 struct JingleMessageReply {
   enum ReplyType {
     REPLY_RESULT,
     REPLY_ERROR,
   };
   enum ErrorType {
     NONE,
     BAD_REQUEST,
@@ skipping 14 matching lines @@
 
   ReplyType type;
   ErrorType error_type;
   std::string text;
 };
 
 }  // protocol
 }  // remoting
 
 #endif  // REMOTING_PROTOCOL_JINGLE_MESSAGES_H_