/*

* 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 DHCPSERVERIPADDRESSRESOLVER_H

#define DHCPSERVERIPADDRESSRESOLVER_H

#include <e32base.h>

#include <in_sock.h>

#include <comms-infras/netcfgextndhcpmsg.h> // TDhcp4RawOptionDataPckg

#include "dhcpconstants.h"

/**

*  Resolve ip address of DHCP server from WLAN network.

*

*  @lib dhcppositionprovider

*  @since S60 3.2

*/

class CDhcpPsyDhcpServerIPResolver : public CActive

    {

    public:

        /**

         * Two-phased statical constructor which can leave

         *

         * @since S60 3.2

         */

        static CDhcpPsyDhcpServerIPResolver* NewL( RConnection& aConnection, TRequestStatus& aStatus );

        /**

         * Default destructor.

         *

         * @since S60 3.2

         */

        virtual ~CDhcpPsyDhcpServerIPResolver();

    public:

        /**

         *

         * Returns ip address of the dhcp server at WLAN network.

         *

         * @since S60 3.2

         * @return const TDesC8&

         */

        TInetAddr&  DhcpServerInetAddress ();

    public:

        /**

        * Called by static periodic timer callback

        */

        void CancelOutstandigRequest ();

    private:

        /**

         * C++ constructor

         *

         * @since S60 3.2

         */

        CDhcpPsyDhcpServerIPResolver( RConnection& aConnection, TRequestStatus& aStatus );

        /**

         * Finalize construction and launches the adddress to the WLAN network

         */

         void ConstructL();

    protected:

        /**

        * Cancellation of an outstanding request.

        */

        void DoCancel();

        /**

        * Handles an active object's request completion event.

        */

        void RunL();

    private:        // Methods

        /*

        * The callback function.

        * param aAny A pointer to this class.

        */

        static TInt PeriodicTimerCallBack(TAny* aAny);

        /*

        * Complete client request.

        */

        void  CompleteRequest(TInt aStatusCode);

    private: // data

        //

        RConnection& iConnection;

        // To cancel outstanding request if needed.

        CPeriodic*  iPeriodicTimer;

        // If true, we have received response from network

        TBool   iDhcpResponseReceived;

        // Client TRequestStatus to be notify after request

        //  has been completed.

        TRequestStatus& iClientStatus;

        //

        TConnectionAddrBuf iPckg;

        // Container for ip addres of the dhcp server.

        TInetAddr   iInetAddress;

    };

#endif // DHCPSERVERIPADDRESSRESOLVER_H