natplugins/natpnatfwsdpprovider/inc/nspstateresolving.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:04:58 +0200
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/*
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* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Resolving state description.
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*
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*/
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#ifndef NSPSTATERESOLVING_H
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#define NSPSTATERESOLVING_H
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#include "nspstatebase.h"
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/**
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 *  State where Candidate pairs are waited from NAT FW.
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 *
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 *  Each media stream component should receive one candidate pair,
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 *  which are used to modify Sdp incase of Ice.
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 *  This is Ice specific state.
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 *
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 *  @lib natfwsdpprovider.dll
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 *  @since S60 3.2
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 */
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class CNSPStateResolving : public CNSPStateBase
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    {
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public: // Constructors and destructor
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    /**
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     * A two-phase constructor.
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     */
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    static CNSPStateResolving* NewL();
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    /**
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     * A two-phase constructor.
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     */
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    static CNSPStateResolving* NewLC();
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    /**
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     * Destructor.
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     */
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    virtual ~CNSPStateResolving();
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private: // Constructors and destructor
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    CNSPStateResolving();
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protected: // From CNSPStateBase
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    /**
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     * Called to check if individual state accepts event, i.e.
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     * whether to execute DoApplyL.
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     *
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     * @since       S60 3.2
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     * @param       aEvent          State machine event.
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     * @return      ETrue if event is accepted, EFalse otherwise.
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     */
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    TBool DoAcceptL( TNSPStateMachineEvent& aEvent );
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    /**
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     * Called when the state is entered.
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     * 
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     * @since       S60 3.2
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     * @param       aEvent          State machine event.
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     */
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    void DoStateEntryL( TNSPStateMachineEvent& aEvent );
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    /**
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     * Called when state entry to next state will leave, and return
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     * into 'this' state must be done.
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     * 
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     * @since       S60 3.2
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     * @param       aEvent          State machine event.
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     */
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    void DoReverse( TNSPStateMachineEvent& aEvent );
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    /**
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     * Current state is applied with this method.
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     * 
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     * @since       S60 3.2
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     * @param       aEvent          State machine event.
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     */
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    void DoApplyL( TNSPStateMachineEvent& aEvent );
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    /**
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     * Current state is exited with this method.
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     * 
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     * @since       S60 3.2
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     * @param       aEvent          State machine event.
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     */
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    void DoExitL( TNSPStateMachineEvent& aEvent );
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private: // New functions
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	void ControlMediaL( TNSPStateMachineEvent& aEvent ) const;
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    void ApplyUpdateL( TNSPStateMachineEvent& aEvent ) const;
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    };
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#endif // NSPSTATERESOLVING_H
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// end of file