/*

* 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:  Socket reader

*

*/

#ifndef CSOCKETREADER_H

#define CSOCKETREADER_H

//  INCLUDES

#include <e32base.h>

#include <es_sock.h>

#include <in_sock.h>

// CONSTANTS

const TInt KReadBufferSize = 8*1024;  //bytes

// FORWARD DECLARATIONS

class MSocketReaderObserver;

class RSocket;

class CDesC8Array;

// CLASS DECLARATION

/**

*  Socket reader. ActiveObject that reads data from opened RSocket.

*/

NONSHARABLE_CLASS( CSocketReader ) : public CActive

    {

    public:  // Constructors and destructor

        /**

        * Factory function.

        * @param aSocket Opened RSocket session from where data is read.

        * @param aUDPRemotePort Peer ends port.

        * @return New CSocketReader instance.

        */

        static CSocketReader* NewL( RSocket& aSocket,

            TInt aUDPRemotePort = -1 );

        /**

        * Factory function.

        * @param aSocket Opened RSocket session from where data is read.

        * @param aUDPRemotePort Peer ends port.

        * @return New CSocketReader instance.

        */

        static CSocketReader* NewLC( RSocket& aSocket,

            TInt aUDPRemotePort = -1 );

        /**

        * Destructor.

        */

        ~CSocketReader();

    public: // New functions

        /**

        * Sets observer.

        * @param aObserver Pointer to observer.

        */

        void SetObserver( MSocketReaderObserver* aObserver );

        /**

        * Starts reading the socket.

        */

        void Start();

    private:

        /**

        * Starts reading the socket.

        */

        void IssueRead();

    protected: // 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.

        */

        CSocketReader( RSocket& aSocket, TInt aUDPRemotePort = -1 );

        /**

        * 2nd phase constructor.

        */

        void ConstructL();

    private:    // Data

        TSockXfrLength iReceivedDataLength;

        TBuf8<KReadBufferSize> iReadBuffer;

        MSocketReaderObserver* iObserver;

        RSocket& iSocket;

        const TInt iUDPRemotePort;

        TInetAddr iUDPRemoteAddr;

    };

#endif      // CSOCKETREADER_H

// End of File