/*

* 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:  Resolving state description.

*

*/

#ifndef NSPSTATERESOLVING_H

#define NSPSTATERESOLVING_H

#include "nspstatebase.h"

/**

 *  State where Candidate pairs are waited from NAT FW.

 *

 *  Each media stream component should receive one candidate pair,

 *  which are used to modify Sdp incase of Ice.

 *  This is Ice specific state.

 *

 *  @lib natfwsdpprovider.dll

 *  @since S60 3.2

 */

class CNSPStateResolving : public CNSPStateBase

    {

public: // Constructors and destructor

    /**

     * A two-phase constructor.

     */

    static CNSPStateResolving* NewL();

    /**

     * A two-phase constructor.

     */

    static CNSPStateResolving* NewLC();

    /**

     * Destructor.

     */

    virtual ~CNSPStateResolving();

private: // Constructors and destructor

    CNSPStateResolving();

protected: // From CNSPStateBase

    /**

     * Called to check if individual state accepts event, i.e.

     * whether to execute DoApplyL.

     *

     * @since       S60 3.2

     * @param       aEvent          State machine event.

     * @return      ETrue if event is accepted, EFalse otherwise.

     */

    TBool DoAcceptL( TNSPStateMachineEvent& aEvent );

    /**

     * Called when the state is entered.

     * 

     * @since       S60 3.2

     * @param       aEvent          State machine event.

     */

    void DoStateEntryL( TNSPStateMachineEvent& aEvent );

    /**

     * Called when state entry to next state will leave, and return

     * into 'this' state must be done.

     * 

     * @since       S60 3.2

     * @param       aEvent          State machine event.

     */

    void DoReverse( TNSPStateMachineEvent& aEvent );

    /**

     * Current state is applied with this method.

     * 

     * @since       S60 3.2

     * @param       aEvent          State machine event.

     */

    void DoApplyL( TNSPStateMachineEvent& aEvent );

    /**

     * Current state is exited with this method.

     * 

     * @since       S60 3.2

     * @param       aEvent          State machine event.

     */

    void DoExitL( TNSPStateMachineEvent& aEvent );

private: // New functions

	void ControlMediaL( TNSPStateMachineEvent& aEvent ) const;

    void ApplyUpdateL( TNSPStateMachineEvent& aEvent ) const;

    };

#endif // NSPSTATERESOLVING_H

// end of file