/*

* Copyright (c) 2005 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:  

*

*/

#include "mcenatstatecreateoffer.h"

#include "mcenatsipsession.h"

#include "mceactionset.h"

#include "mceclientserver.h"

#include "mcenatevents.h"

#include "mcesrvlogs.h"

// -----------------------------------------------------------------------------

// CMceNatStateCreateOffer::CMceNatStateCreateOffer

// -----------------------------------------------------------------------------

//

CMceNatStateCreateOffer::CMceNatStateCreateOffer()

	{

	}

// -----------------------------------------------------------------------------

// CMceNatStateCreateOffer::~CMceNatStateCreateOffer

// -----------------------------------------------------------------------------

//

CMceNatStateCreateOffer::~CMceNatStateCreateOffer()

	{

	}

// -----------------------------------------------------------------------------

// CMceNatStateCreateOffer::Accept

// -----------------------------------------------------------------------------

//

TBool CMceNatStateCreateOffer::Accept( TMceNatStateTransitionEvent& aEvent )

    {

    if ( EMceNatOffer == aEvent.NatCode() ||

         EMceNatError == aEvent.NatCode() ||

         EMceNatICMPError == aEvent.NatCode())

        {

        return ETrue;

        }

    else

        {

        return EFalse;

        }

    }

// -----------------------------------------------------------------------------

// CMceNatStateCreateOffer::EntryL

// -----------------------------------------------------------------------------

//

void CMceNatStateCreateOffer::EntryL( TMceNatStateTransitionEvent& aEvent )

	{

	MCESRV_DEBUG( "*** CMceNatStateCreateOffer::EntryL, Entry" );

	aEvent.Session().Actions().EncodeL();

	TMceReturnStatus status = aEvent.NatActions().CreateOfferL();

	if ( KMceReady == status )

	    {

        aEvent.NatCode() = ( KMceReady == aEvent.ParamStatus() ?

                EMceNatSync : aEvent.NatCode() );

	    aEvent.NatActions().StateChangedL( aEvent, KMceNatStateWait );

	    }

    else

        {

        aEvent.ParamStatus() = status;

        }

	MCESRV_DEBUG( "*** CMceNatStateCreateOffer::EntryL, Exit" );

	}

// -----------------------------------------------------------------------------

// CMceNatStateCreateOffer::ExitL

// -----------------------------------------------------------------------------

//

void CMceNatStateCreateOffer::ExitL( TMceNatStateTransitionEvent& aEvent )

	{

	MCESRV_DEBUG( "*** CMceNatStateCreateOffer::ExitL, Entry" );

	switch ( aEvent.NatCode() )

	    {

	    case EMceNatError:

	    case EMceNatICMPError:

	        {

	        ExitErrorL( aEvent );

	        break;

	        }

	    default:

	        {

	        ExitDefaultL( aEvent );

	        break;

	        }

	    }

	MCESRV_DEBUG( "*** CMceNatStateCreateOffer::ExitL, Exit" );

	}

// -----------------------------------------------------------------------------

// CMceNatStateCreateOffer::ExitErrorL

// -----------------------------------------------------------------------------

//

void CMceNatStateCreateOffer::ExitErrorL( TMceNatStateTransitionEvent& aEvent )

    {

    if ( aEvent.ParamStatus() > KMceNatNonFatalErrorLimit )

        {

        aEvent.Session().Actions().ClientErrorOccured( aEvent.ParamStatus() );

        }

	TMceStateIndex sipState = aEvent.Session().CurrentState().Id();

    if (( aEvent.NatCode() == EMceNatICMPError && 

    		KMceStateEstablished == sipState ) || 

    		aEvent.NatCode() == EMceNatError )

    	{

    	aEvent.NatActions().Continue();

    	User::Leave( aEvent.ParamStatus() );		

    	}

    }

// -----------------------------------------------------------------------------

// CMceNatStateCreateOffer::ExitDefaultL

// -----------------------------------------------------------------------------

//

void CMceNatStateCreateOffer::ExitDefaultL( TMceNatStateTransitionEvent& aEvent )

    {

    User::LeaveIfNull( aEvent.Document() );

    CMceSipSession& session = aEvent.Session();

    CSdpDocument* previous = session.Offer();

    aEvent.Session().SetOffer( aEvent.Document() );

    aEvent.NatActions().SetOffered( KMceNatOfferSdp );

    aEvent.NatActions().SdpCleanup( previous, session.Offer() );

    aEvent.NatActions().StateChangedL( aEvent, KMceNatStateWait );

    }