/*

* Copyright (c) 2005-2009 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:

* Name          : CNATTraversalControllerExample.h

* Part of       : SIP NAT Traversal Controller

* Version       : SIP/5.0 

*

*/

#ifndef CNATTRAVERSALCONTROLLEREXAMPLE_H

#define CNATTRAVERSALCONTROLLEREXAMPLE_H

// INCLUDES

#include "sipnattraversalcontroller.h"

#include "MNATTraversalPendingRequestContainer.h"

#include "TNATTraversalPendingRequest.h"

// FORWARD DECLARATIONS

// CLASS DEFINITION

/**

* Example implementation of SIP NAT Traversal Controller ECOM plug-in.

*/

class CNATTraversalControllerExample : 

    public CSIPNATTraversalController,

    public MNATTraversalPendingRequestContainer

    {

	public: // Constructors and destructor

    	static CNATTraversalControllerExample* NewL(TAny* aInitParams);

    	~CNATTraversalControllerExample ();

    public: // From CSIPNATTraversalController

        TUint32 ResolvePublicAddrL(

            TUint32 aIapId,

            RConnection& aConnection,

            const TInetAddr& aLocalAddr,

            const TDesC8& aDomain,

            RSocket& aSocket,

            const TInetAddr& aNextHopAddr,

            MSIPNATBindingObserver* aBindingObserver,

            MSIPNATTraversalRequestObserver& aRequestObserver );

        void Cancel( TUint32 aRequestId );        

        TBool RefreshNATBindingL( 

            RSocket& aSocket,

            const MSIPNATBindingObserver* aBindingObserver );

        TBool RefreshNATBindingL(

            CSecureSocket& aSecureSocket,

            const MSIPNATBindingObserver* aBindingObserver );

        void UpdateNextHop( 

            const TInetAddr& aNextHopAddr,

            const MSIPNATBindingObserver* aBindingObserver );

        void SocketIdle( 

            TBool aIdle,

            RSocket& aSocket );

        void SocketIdle( 

            TBool aIdle,

            CSecureSocket& aSecureSocket );

        void DataReceivedL( 

            const TDesC8& aData,

            const RSocket& aUdpSocket,

            TBool& aHandled );    

        void FreeResources( TUint32 aIapId );

        void FreeResources( MSIPNATBindingObserver& aBindingObserver );

    public: // From MNATTraversalPendingRequestContainer

        void RequestCompleted( TUint32 aRequestId );

	private: // Constructors

	    CNATTraversalControllerExample( RSocketServ& aSocketServ );

		void ConstructL();

    private: // New functions

		TUint32 NextRequestId();

        TUint Protocol( RSocket& aSocket ) const;

        TBool BindingExists(const MSIPNATBindingObserver* aObserver) const;	

	private: // Data

        RSocketServ& iSocketServ;

        CDeltaTimer* iDeltaTimer;

        RArray<TNATTraversalPendingRequest> iPendingRequests;

        TLinearOrder<TNATTraversalPendingRequest> iRequestOrder;     

        TUint32 iRequestIdCounter;

    };

#endif // CNATTRAVERSALCONTROLLEREXAMPLE_H