/*

* Copyright (c) 2006-2007 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 CNATFWUNSAFREQUESTEDTRANSPORTATTRIBUTE_H

#define CNATFWUNSAFREQUESTEDTRANSPORTATTRIBUTE_H

#include "natfwunsafattribute.h"

/**

 * Class for REQUESTED-TRANSPORT attribute.

 *

 *  @lib natfwunsafprotocols.lib

 *  @since S60 3.2

 */

class CNATFWUNSAFRequestedTransportAttribute : public CNATFWUNSAFAttribute

    {

public: // Enumerations

    enum TTransportProtocol

        {

        EProtocolUdp           = 0x00000000,

        EProtocolTcp           = 0x00000001

        };

public: // Constructors and destructor

    /**

    * Creates a new instance of CNATFWUNSAFRequestedTransportAttribute

    * @param aProtocol Requested transport protocol

    * @return A new instance of CNATFWUNSAFRequestedTransportAttribute

    *          ownership is transferred.

    */

    IMPORT_C static CNATFWUNSAFRequestedTransportAttribute*

        NewL(TTransportProtocol aProtocol);

    /**

    * Creates a new instance of CNATFWUNSAFRequestedTransportAttribute and

    * pushes it to the CleanupStack.

    * @param aProtocol Requested transport protocol

    * @return A new instance of CNATFWUNSAFRequestedTransportAttribute,

    *          ownership is transferred.

    */

    IMPORT_C static CNATFWUNSAFRequestedTransportAttribute*

        NewLC(TTransportProtocol aProtocol);

    /**

    * Decodes a UNSAF attribute from a byte stream.

    * This version is for lookup table.

    * @param aByteStream Byte stream, containing attribute type, length and

    *    value.

    * @return Decoded UNSAF attribute, ownership is transferred.

    */

    static CNATFWUNSAFAttribute* DecodeAttributeL(

        const TDesC8& aByteStream);

    /**

    * Destructor, deletes the resources of

    * CNATFWUNSAFRequestedTransportAttribute.

    */

    ~CNATFWUNSAFRequestedTransportAttribute();

public: // From CNATFWUNSAFAttribute

    CNATFWUNSAFAttribute::TType Type() const;

    HBufC8* EncodeValueL() const;

public: // New functions

    IMPORT_C CNATFWUNSAFRequestedTransportAttribute::TTransportProtocol 

        TransportProtocol() const;

private:

    enum TEncodedValue

        {

        //Size in bytes of the attribute value

        EAttributeValueSize = 4,

        };

private: // Constructors

    CNATFWUNSAFRequestedTransportAttribute();

    void ConstructL(TTransportProtocol aProtocol);

private: // Data

    TTransportProtocol iProtocol;

    };

#endif // CNATFWUNSAFREQUESTEDTRANSPORTATTRIBUTE_H