/*

* 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 "mcenatstateidle.h"

#include "mcenatsipsession.h"

#include "mceactionset.h"

#include "mceclientserver.h"

#include "mcenatevents.h"

#include "mcenatactions.h"

#include "mcesrvlogs.h"

#include "mcestate.h"

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

// CMceNatStateIdle::CMceNatStateIdle

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

//

CMceNatStateIdle::CMceNatStateIdle()

	{

	}

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

// CMceNatStateIdle::~CMceNatStateIdle

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

//

CMceNatStateIdle::~CMceNatStateIdle()

	{

	}

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

// CMceNatStateIdle::Accept

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

//

TBool CMceNatStateIdle::Accept( TMceNatStateTransitionEvent& aEvent )

    {

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

         EMceNatError == aEvent.NatCode() ||

         EMceNatICMPError == aEvent.NatCode())

        {

        return ETrue;

        }

    else

        {

        return EFalse;

        }

    }

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

// CMceNatStateIdle::EntryL

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

//

void CMceNatStateIdle::EntryL( TMceNatStateTransitionEvent& aEvent )

	{

	if ( CMceCsSubSession::EInSession == aEvent.Session().Type() &&

			( &aEvent.Session().Request()) && 

			MceSip::HasContent( aEvent.Session().Request()  ))

		{

		aEvent.Session().ServerInitializedL();

		}

	}

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

// CMceNatStateIdle::ExitL

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

//

void CMceNatStateIdle::ExitL( TMceNatStateTransitionEvent& aEvent )

	{

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

	switch ( aEvent.NatCode() )

	    {

	    case EMceNatError:

	    case EMceNatICMPError:

	        {

	        ExitErrorL( aEvent );

	        break;

	        }

	    default:

	        {

	        ExitDefaultL( aEvent );

	        break;

	        }

	    }

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

	}

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

// CMceNatStateIdle::ExitErrorL

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

//

void CMceNatStateIdle::ExitErrorL( TMceNatStateTransitionEvent& aEvent )

    {

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

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

    		KMceStateEstablished == sipState ) || 

    		aEvent.NatCode() == EMceNatError )

    	{

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

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

    	}

    }

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

// CMceNatStateIdle::ExitDefaultL

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

//

void CMceNatStateIdle::ExitDefaultL( TMceNatStateTransitionEvent& aEvent )

    {       

    if ( CMceCsSubSession::EInSession == aEvent.Session().Type() )

        {

        if ( &aEvent.Session().Request() && 

        		!MceSip::HasContent( aEvent.Session().Request() ))

        	{

    		aEvent.NatActions().SetOffered( KMceNatOfferSdp );

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

        	}

        else

        	{

        	aEvent.NatActions().SetOffered( KMceNatOfferSdp );

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

        	}

        }

    else if ( CMceCsSubSession::EOutSession == aEvent.Session().Type() )

        {

        aEvent.NatActions().SetOffered( KMceNatOfferSdp );

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

        }

    else

        {

        User::Leave( KErrArgument );

        }

    }