/*

* 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 CNATBINDINGSTUNANDCRLFREFRESHER_H

#define CNATBINDINGSTUNANDCRLFREFRESHER_H

//  INCLUDES

#include "cnatbindingstunrefresher.h"

#include "mnatbindingrefresherobserver.h"

// FORWARD DECLARATIONS

class CUdpCRLFSender;

class MNATTraversalSocketManager;

// CLASS DECLARATION

/**

* A class for STUN based NAT binding refresh.

*/

class CNATBindingSTUNAndCRLFRefresher : public CNATBindingSTUNRefresher,

                                        public MNATBindingRefresherObserver

    {

    public:  // Constructors and destructor

        static CNATBindingSTUNAndCRLFRefresher* NewL(

            CDeltaTimer& aDeltaTimer,

            TInt aRefreshInterval,

            MNATBindingRefresherObserver& aObserver,

            CNATBinding& aNATBinding,

            RSocket& aSocket,

            const TInetAddr& aAddr,

            MNATTraversalSocketManager& aSocketManager );

        static CNATBindingSTUNAndCRLFRefresher* NewLC(

            CDeltaTimer& aDeltaTimer,

            TInt aRefreshInterval,

            MNATBindingRefresherObserver& aObserver,

            CNATBinding& aNATBinding,

            RSocket& aSocket,

            const TInetAddr& aAddr,

            MNATTraversalSocketManager& aSocketManager );

        ~CNATBindingSTUNAndCRLFRefresher();

    public: // From MNATBindingRefresherObserver

        void NATBindingRefreshComplete( TInt aCompletionCode );

    protected: // From CNATBindingRefresher

        void RefreshTimerExpiredL();

        void CancelRefresh();

    private: // Constructors

        CNATBindingSTUNAndCRLFRefresher(

            CDeltaTimer& aDeltaTimer,

            TInt aRefreshInterval,

            MNATBindingRefresherObserver& aObserver,

            CNATBinding& aNATBinding );

         void ConstructL(

            RSocket& aSocket,

            const TInetAddr& aAddr,

            MNATTraversalSocketManager& aSocketManager );

    private: // Data

        CUdpCRLFSender* iCRLFSender;

    };

#endif // CNATBINDINGSTUNANDCRLFREFRESHER_H

// End of File