/*

* Copyright (c) 2008-2009 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:  VPN PFKEY extension data utility

*

*/

#ifndef PFKEYEXTDATAUTIL_H

#define PFKEYEXTDATAUTIL_H

#include <e32base.h>

/**

 *  PFKEY extension data utility class

 *

 *  PFKEY extension data utility class for building generic PFKEY API extension

 *  data.

 *

 *  @lib ikeutils.lib

 */

class PFKeyExtDataUtil

    {

public:    

    /**

     * This static method builds a generic PFKEY API extension data which is

     * needed for IPSEC do UDP encapsulation/decapsulation for ESP packet.

     * @param aExtData Generic extension data (returned)

     * @param aNAT_D_Flags NAT_D flags

     * @param aNATDetected Informs if NAT detected (local end behind NAT)

     * @param aNokiaNATProbeUsed Nokia NAT probe used

     * @param aUdpEncapsPort UDP encapsulation port

     * @param aKeepAliveTimeout Keep alive timeout

     * @param aDestinAddr Destination address

     * @param aOriginalAddr Peer original address

     */

    IMPORT_C static void BuildUdpEncExtensionData( TDes8& aExtData,

                                                   TUint32 aNAT_D_Flags,

                                                   TBool aNATDetected,

                                                   TBool aNokiaNATProbeUsed,

                                                   TUint16 aUdpEncapsPort,

                                                   TUint16 aKeepAliveTimeout,

                                                   const TInetAddr& aDestinAddr,

                                                   const TInetAddr& aOriginalAddr );    

    };

#endif // PFKEYEXTDATAUTIL_H