/*

* 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: 

* Class CIkev2NatT implements NAT Traversal functionality specified in IKEv2.

*

*/

#ifndef _IKEV2NATT_H_

#define _IKEV2NATT_H_

class TNotifPayloadIkev2;

class TInetAddr;

class CIkev2NatT : public CBase

    {

public:

    CIkev2NatT(){};  

    static CIkev2NatT* NewL(const TInetAddr& aSourceAddr, const TInetAddr& aDestinationAddr, TUint16 aPort, 

                            const TDesC8& aInitiatorSpi, const TDesC8& aResponderSpi);

    ~CIkev2NatT() {delete iSrcNotify; delete iDstNotify; }

    static TUint32 CheckPeerNotifysL(const CArrayFixFlat<TNotifPayloadIkev2*>& aNotifys, 

                                     const TInetAddr& aLocalAddr, const TInetAddr& aRemoteAddr, TUint16 aPort, 

									 const TDesC8& aInitiatorSpi, const TDesC8& aResponderSpi, TBool& aSupported);

	TPtrC8 SourceNofify() const { return *iSrcNotify;}

	TPtrC8 DestinNofify() const { return *iDstNotify;}

private:

	void    ConstructL(const TInetAddr& aSourceAddr, const TInetAddr& aDestinationAddr, TUint16 aPort, 

                       const TDesC8& aInitiatorSpi, const TDesC8& aResponderSpi);

	HBufC8* GenerateNatDetectionHashL(const TDesC8& aInitiatorSpi, const TDesC8& aResponderSpi,

                                      TInetAddr aIpAddress, TUint16 aPort) const;

    HBufC8*      iSrcNotify;

	HBufC8*      iDstNotify;    

    };

#endif