/*

* Copyright (c) 2006-2007 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:    Abstract socket sender

*

*/

#ifndef C_CNCMSENDER_H

#define C_CNCMSENDER_H

#include <e32base.h>

#include "ncmconnectionmultiplexer.hrh"

class MNcmReceiverSenderObserver;

class MNcmSenderObserver;

class RSocket;

class CNcmSendItem;

/**

 *  Abstract socket sender

 *

 *  @lib connectionmux.lib

 *  @since S60 v3.2

 */

NONSHARABLE_CLASS( CNcmSender ) : public CActive

    {

public:

    /**

     * Destructor

     */

    virtual ~CNcmSender();

    /**

     * Send action which forwards real sending operation to DoSend()

     *

     * @since S60 v3.2

     * @param aMessage          Message to be send. It will be copied

     *                          to iBuffer.

     * @param aSenderObserver   Sender observer for this sending request

     */

    void Send( const TDesC8& aMessage, MNcmSenderObserver* aSenderObserver );

    /**

     * Cancels the specified message send processes.

     *

     * @since   S60 v3.2       

     * @param   aSenderObserver         Observer

     * @return  void

     */

    void CancelMessageSendL( const MNcmSenderObserver* aSenderObserver );

    /**

     * The real send action which should write iBuffer to iSocket

     *

     * @since S60 v3.2

     */

    virtual void DoSend() = 0;

    /**

     * Activate sending.

     *

     * @since S60 v3.2

     * @return void

     */

    void Activate() const;

    /**

     * Deactivate sending.

     *

     * @since S60 v3.2

     * @return void

     */

    void Deactivate();

protected:

    CNcmSender( RSocket& aSocket,

        MNcmReceiverSenderObserver& aObserver );

// from base class CActive

    void RunL();

    void DoCancel();

protected: // data

    /**

     * Socket where to send (MUST be connected!)

     */

    RSocket& iSocket;

    /**

     * Destination observer.

     */

    MNcmReceiverSenderObserver& iObserver;

    /**

     * Notify type

     */

    TMultiplexerConnectionNotifyType iNotify;

    /**

     * Send item array.

     * Holds packets in array if socket is busy.

     * Own.

     */

    RPointerArray<CNcmSendItem> iSendItemArray;

    };

#endif // C_CNCMSENDER_H