/*

* Copyright (c) 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:  Listens TCP port

*

*/

#ifndef CTCPPORTLISTENER_H

#define CTCPPORTLISTENER_H

//  INCLUDES

#include <e32base.h>

#include <es_sock.h>

// FORWARD DECLARATIONS

class MTCPPortListenerObserver;

// CLASS DECLARATION

/**

*  ActiveObject which listens a TCP port.

*/

NONSHARABLE_CLASS( CTCPPortListener ) : public CActive

    {

    public:  // Constructors and destructor

        /**

        * Factory function.

        * @param aPort TCP port to listen.

        * @param aObserver Pointer to observer.

        */

        static CTCPPortListener* NewL( TInt aPort,

                                       MTCPPortListenerObserver* aObserver );

        /**

        * Factory function.

        * @param aPort TCP port to listen.

        * @param aObserver Pointer to observer.

        */

        static CTCPPortListener* NewLC( TInt aPort,

                                        MTCPPortListenerObserver* aObserver );

        /**

        * Destructor.

        */

        ~CTCPPortListener();

    public: // New functions

        /**

        * Starts listening the port.

        */

        void IssueListen();

        /**

        * Retrieve current port number for this listener

        * @return Port number for this listening socket

        */

        TInt Port() const;

    public: // Functions from base classes

        /**

        * From CActive. Pending request has been completed.

        */

        void RunL();

        /**

        * From CActive. Pending request has been cancelled.

        */

        void DoCancel();

        /**

        * From CActive. RunL has leaved.

        */

        TInt RunError( TInt aError );

    private:

        /**

        * Default constructor.

        * @param aPort TCP port to listen.

        * @param aObserver Pointer to observer.

        */

        CTCPPortListener( TInt aPort,

                          MTCPPortListenerObserver* aObserver );

        /**

        * 2nd phase constructor.

        */

        void ConstructL();

    private:    // Data

        MTCPPortListenerObserver* iObserver;

        TInt iPort;

        RSocketServ iSocketServer;

        RSocket iListeningSocket;

        RSocket* iAcceptedSocket;

    };

#endif      // CTCPPORTLISTENER_H

// End of File