/** @file

* Copyright (c) 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:  class for sending/receiving HTTP request/response 

*                using Symbian HTTP client 

*

*/

#ifndef C_CUPNPTRANSFERBASE_H

#define C_CUPNPTRANSFERBASE_H

// INCLUDES

#include <e32base.h>

#include "httptransferobserver.h"

#include "upnptransferobserver.h"

// FORWARD DECLARATIONS

class CUpnpContentDirectory;

class CHttpTransferBase;

class MUpnpTransferObserver;

const TInt KDefaultAccessPoint = 11;

const TInt KDefaultBuffer = 64000;

const TInt KNumOfConcurrentTransactions = 2;

class CUpnpTransferBase: public CBase , public MHttpTransferObserver

{

public:  // Constructors and destructor

    /**

    * Destructor.

    */

    virtual ~CUpnpTransferBase();

// from base class  MHttpTransferObserver

   virtual void ReadyForTransferL( TAny* aKey);

   /**

    * Gets transfer progress callback

    *

    * @since S60 v3.2

    * @param aKey the file identifier

    * @param aBytes transferred

    * @param aTotalBytes all bytes to be transferred

    */

   virtual void TransferProgress( TAny* aKey, 

                                  TInt aBytes, 

                                  TInt aTotalBytes );

   virtual void TransferCompleted( TAny* aKey, TInt aStatus );     

public: // New functions

     /**

     * Creates new CHttpFile object and adds it to the iFileQueue

     *

     * @since S60 v3.2

     * @param aUri Uri of the downloaded object

     * @param aTargetPath Local path of the object

     * @param aKey Identifier of the object

     */

    void CreateAndQueueHttpFileL( const TDesC8& aUri, 

                                  const TDesC& aTargetPath, 

                                  TInt aKey );

    /**

    * Sets a header

    *

    * @since S60 v3.2

    * @param aKey the file identifier

    * @param aFieldName The field name, e.g. 'Content-Type'

    * @param aFieldValue The field value. e.g. 'text/plain'

    */

    void SetHeaderL( TInt aKey,

                     const TDesC8& aFieldName, 

                     const TDesC8& aFieldValue );

    /**

    * Turns on/off transfer progress callbacks

    *

    * @since S60 v3.2

    * @param aKey the file identifier

    * @param aSwitchOn tuning on/off    

    */

    void TrackProgess(TInt aKey, TBool aSwitchOn);   

    /**

    * cancels transfer

    *

    * @since S60 v3.2

    * @param aKey the file identifier   

    */         

    virtual void CancelTransfer( TInt aKey);     

 protected: 

    /**

    * C++ default constructor.

    */

    CUpnpTransferBase( MUpnpTransferObserver* aCd );

    // new functions

    TInt MapStatus( TInt aErrorCode );

 protected:    // Data

    MUpnpTransferObserver* iObserver;

    CHttpTransferBase* iHttpTransferBase;

};

#endif // C_CUPNPTRANFERBASE_H