--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/NATTraversalController/Api/sipnattraversalrequestobserver.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,62 @@
+/*
+* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+* Name          : sipnattraversalrequestobserver.h
+* Part of       : SIP NAT Traversal Controller
+* Version       : SIP/5.0 
+*
+*/
+
+
+
+#ifndef MSIPNATTRAVERSALREQUESTOBSERVER_H
+#define MSIPNATTRAVERSALREQUESTOBSERVER_H
+
+// INCLUDES
+#include <e32std.h>
+#include <in_sock.h>
+
+// CLASS DECLARATION
+/**
+* @publishedPartner
+* @released
+*
+* Callback to be implemented by the users of SIP NAT Traversal Controller.
+*/
+class MSIPNATTraversalRequestObserver
+	{
+	public:
+
+		/**
+		* The asynchronous request to NAT Traversal Controller was completed,
+		* but terminal's public address is the same as its local address.
+        * @param aRequestId a request ID
+		* @param aCompletionCode completion code, KErrNone if successful. 
+		*/
+		virtual void RequestComplete(
+		    TUint32 aRequestId,
+		    TInt aCompletionCode ) = 0;
+		    
+		/**
+		* The asynchronous request to NAT Traversal Controller was completed
+		* and terminal's public address related to this request was resolved.
+        * @param aRequestId a request ID
+		* @param aPublicAddr a public IP address
+		*/
+		virtual void PublicAddrResolved(
+		    TUint32 aRequestId,
+		    const TInetAddr& aPublicAddr ) = 0;		    
+	};
+
+#endif // MSIPNATTRAVERSALREQUESTOBSERVER_H