examples/ForumNokia/Symbian_OS_End-to-End_Sockets_API_Example/SocketTaskManager/inc/TaskManagerEngineReader.h

/*
 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 *    
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *    
 *  * Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of Nokia Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *    
 *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 *    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 *    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *    
 *    Description:  
 */


#ifndef __TASKMANAGERENGINEREADER_H__
#define __TASKMANAGERENGINEREADER_H__

// INCLUDE FILES
#include <in_sock.h>

// FORWARD DECLARATIONS
class CSecureSocket;

// CLASS DECLARATIONS

class MEngineNotifier
    {
public:
    virtual TBool PackageReceivedL( const TDesC8& aData ) = 0;
    };


class CTaskManagerEngineReader : public CActive
    {
public:

        static CTaskManagerEngineReader* NewL( MEngineNotifier& aNotifier );
    static CTaskManagerEngineReader* NewLC( MEngineNotifier& aNotifier );

        ~CTaskManagerEngineReader();

        void Start();
        
    void SetSecureSocket( CSecureSocket* aSocket );

protected: // from CActive

        void DoCancel();

        void RunL();    

private:

        CTaskManagerEngineReader( MEngineNotifier& aNotifier );

        void ConstructL();

        void IssueRead();

private: // Member variables

    // The size of the read buffer in bytes.
    enum { KReadBufferSize = 20 };

    // Socket to read data from.
    CSecureSocket*          iSocket;

    // Buffer for receiving data.
        TBuf8<KReadBufferSize>  iBuffer;

    // Handle to notify engine.
    MEngineNotifier&        iNotifier;
    
    // Stores the amount of bytes read from socket.
    // Must be defined even though it's not used anywhere except when reading.
    TSockXfrLength          iDummyLength;
    };

#endif

// End of file

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