1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  UDP protocol implementation for IP proxy

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef CPROTOCOLUDP_H

    21 #define CPROTOCOLUDP_H

    22 

    23 //  INCLUDES

    24 #include "MBPProtocol.h"

    25 #include "MBPExpression.h"

    26 #include "MExpressionObserverUDP.h"

    27 

    28 #include <e32base.h>

    29 

    30 

    31 // FORWARD DECLARATIONS

    32 class MProtocolObserverUDP;

    33 class MSocketWriter;

    34 

    35 // CLASS DECLARATION

    36 

    37 /**

    38 * UDP protocol implementation. Writes and interpretes data in

    39 * protocol frame.

    40 */

    41 NONSHARABLE_CLASS( CProtocolUDP ) : public CBase, public MBPProtocol,

    42                                     public MExpressionObserver

    43     {

    44 

    45     public:  // Constructors and destructor

    46 

    47         /**

    48         * Factory function.

    49         * @param aObserver Pointer to observer.

    50         * @return New CProtocol instance.

    51         */

    52         static CProtocolUDP* NewL( MProtocolObserverUDP* aObserver );

    53 

    54         /**

    55         * Factory function.

    56         * @param aObserver Pointer to observer.

    57         * @return New CProtocol instance.

    58         */

    59         static CProtocolUDP* NewLC( MProtocolObserverUDP* aObserver );

    60 

    61         /**

    62         * Destructor.

    63         */

    64         ~CProtocolUDP();

    65 

    66     public: // From MExpressionObserverUDP

    67 

    68         void FrameStarted();

    69         void FrameParsedL( TUint aPort, const TDesC8& aData );

    70         void ProtocolErrorL( TInt aErrorCode, const TDesC8& aReceivedData );

    71 

    72     public: // From MBPProtocol

    73 

    74         void WriteFrameL( MSocketWriter& aSocketWriter,

    75             TUint aPeerPort, TUint aOriginalPort, const TDesC8& aData ) const;

    76 

    77         TBool HandleReceivedDataL( TDes8& aData, TInt& aStartPos, TInt& aLength );

    78 

    79     protected:

    80 

    81         /**

    82         * Default constructor.

    83         * @param aObserver Pointer to observer.

    84         */

    85         CProtocolUDP( MProtocolObserverUDP* aObserver );

    86 

    87         /**

    88         * 2nd phase constructor.

    89         */

    90         void ConstructL();

    91 

    92 

    93     private:    // Owned data

    94 

    95         CArrayPtr<MBPExpression>* iExpressionArray;

    96 

    97     private:    // Not owned data

    98         MProtocolObserverUDP* iObserver;

    99 

   100     };

   101 

   102 #endif      // CPROTOCOLUDP_H

   103 

   104 // End of File