--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natplugins/natptraversalcontroller/inc/cnatbindingcrlfrefresher.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,68 @@
+/*
+* Copyright (c) 2007 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: 
+*
+*/
+
+#ifndef CNATBINDINGCRLFREFRESHER_H
+#define CNATBINDINGCRLFREFRESHER_H
+
+//  INCLUDES
+#include "cnatbindingrefresher.h"
+
+// FORWARD DECLARATIONS
+class CCRLFSender;
+
+// CLASS DECLARATION
+/**
+* A class for refreshing NAT bindings using CRLF bursts
+* over connection oriented transports like TCP and TLS.
+*/
+class CNATBindingCRLFRefresher : public CNATBindingRefresher
+    {
+    public:  // Constructors and destructor
+
+        CNATBindingCRLFRefresher(
+            CDeltaTimer& aDeltaTimer,
+            TInt aRefreshInterval,
+            MNATBindingRefresherObserver& aObserver,
+            CCRLFSender* aSender );
+
+        ~CNATBindingCRLFRefresher();
+
+    public: // From CNATBindingRefresher
+
+        TBool PersistentConnectionRequired() const;
+
+        TBool HasSocket(const RSocket& aSocket) const;
+
+        TBool HasSocket(const CSecureSocket& aSocket) const;
+
+    protected: // From CNATBindingRefresher
+
+        TInt RefreshInterval();
+
+        void RefreshTimerExpiredL();
+
+        void CancelRefresh();
+
+    private: // Data
+
+        TInt iRefreshInterval;
+        CCRLFSender* iSender; // owned
+    };
+
+#endif // CNATBINDINGCRLFREFRESHER_H
+
+// End of File