mmsengine/mmshttptransport/inc/mmssession.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:44:11 +0200
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/*
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* Copyright (c) 2002-2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  
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*     MMS transport session
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*
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*/
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#ifndef MMSSESSION_H
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#define MMSSESSION_H
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//  INCLUDES
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#include <e32base.h>
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#include <http/rhttpsession.h>
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#include <mhttpsessioneventcallback.h>
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#include <rhttpheaders.h>
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// CONSTANTS
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_LIT8( KProtocolHTTP, "HTTP/TCP" );
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_LIT8( KXProfile, "x-wap-profile");
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// MACROS
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// DATA TYPES
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// FUNCTION PROTOTYPES
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// FORWARD DECLARATIONS
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class CMmsTransaction;
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class CMmsBearerStatus;
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class RSocketServ;
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class RConnection;
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class MMmsCodecDataSupplier;
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class MMmsCodecDataSink;
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// CLASS DECLARATION
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/**
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* Class for MMS server MTM to send and fetch messages
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* @since 2.0
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* @lib mmstransport.lib
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*/
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class CMmsSession : public CActive, public MHTTPSessionEventCallback
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    {
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    public:  // Constructors and destructor
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        /**
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        * Two-phased constructor.
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        * @param aPriority Priority for this active object
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        * @param aSocketServ opened socket server session
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        * @param aConnection opened connection
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        */
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        IMPORT_C static CMmsSession* NewL(
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            TInt aPriority,
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            RSocketServ& aSocketServ,
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            RConnection& aConnection );
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        /**
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        * Destructor.
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        */
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        virtual ~CMmsSession();
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    public: // New functions
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        /**
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        * Initializes session headers for HTTP protocol.
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        * @param aProxyAddress Proxy address: ip address + port
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        * @param aUseProxy is a proxy to be used with this access point
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        * @param aMaxReceiveSize maximum size of incoming message that can be accepted
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        * @param aMaxSendSize maximum size of message to be sent ( needed for WAP only )
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        * @param aStatus Status of the calling active object
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        */
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        IMPORT_C void OpenL(
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            const TDesC8& aProxyAddress,
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            const TBool aUseProxy,
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            const TInt32 aMaxReceiveSize,
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            const TInt32 aMaxSendSize,
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            TRequestStatus& aStatus );
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        /**
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        * Delivers the message to MMSC.
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        * @param aUri Uri of the MMSC
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        * @param aMessageBuffer In/Out parameter. In: message to posted
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        *    Out: response from MMSC
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        * @param aDataSupplier The class that will serve as data supplier
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        *        for chunked transfer.
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        * @param aDataSink The class that will serve as data sink for chunked receive
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        * @param aStatus Status of the calling active object
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        */
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        IMPORT_C void SendMessageL( 
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            const TDesC& aUri,    
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            CBufFlat& aMessageBuffer, 
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            MMmsCodecDataSupplier&  aDataSupplier,
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            MMmsCodecDataSink&      aDataSink,
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            TRequestStatus& aStatus );
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        /**
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        * Get message from MMSC.
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        * @param aUri URI of the message to fetch
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        * @param aMessageBuffer Buffer for the message 
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        * @param aDataSupplier The class that will serve as data supplier
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        *        for chunked transfer.
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        * @param aDataSink The class that will serve as data sink for chunked receive
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        * @param aStatus Status of the calling active object
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        */
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        IMPORT_C void FetchMessageL( 
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            const TDesC& aUri,
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            CBufFlat& aMessageBuffer,
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            TInt32 aExpectedReceiveSize,
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            MMmsCodecDataSupplier&  aDataSupplier,
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            MMmsCodecDataSink&      aDataSink,
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            TRequestStatus& aStatus );
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   122
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    public: // Functions from base classes
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   124
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        /**
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        * Session event Callback
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        * from MHTTPSessionEventCallback
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        * Called when the filters registration conditions are satisfied for events that occur
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        * on the session.
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        * @ param aEvent The session event that has occured.
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        * @ exception Any leaves must be handled by the appropriate MHFRunError.
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        */
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        void MHFSessionRunL( const THTTPSessionEvent& aEvent );
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   134
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        /**
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        * Session event error Callback
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        * from MHTTPSessionEventCallback
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        * Called when MHFRunL leaves from a session event. This works in the same
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        * way as CActve::RunError
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        * @param aError The leave code that RunL left with.
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        * @param aEvent The Event that was being processed.
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        * @return KErrNone if the error has been cancelled or the code
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        * of the continuing error otherwise.    
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        */
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        TInt MHFSessionRunError( TInt aError, const THTTPSessionEvent& aEvent );
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   146
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    protected:  // New functions
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   148
 
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    protected:  // Functions from base classes
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        /**
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        * From CActive 
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        */
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        virtual void DoCancel();
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   155
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        /**
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        * From CActive 
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        */
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   159
        virtual void RunL();
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   160
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    private:
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   162
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        /**
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        * C++ default constructor.
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        */
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        CMmsSession( TInt aPriority );
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   167
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        /**
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        * By default Symbian OS constructor is private.
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        * @param aSocketServ opened socket server session
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        * @param aConnection opened connection
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        */
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        void ConstructL( RSocketServ& aSocketServ, RConnection& aConnection );
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        // By default, prohibit copy constructor
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        CMmsSession( const CMmsSession& );
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        // Prohibit assignment operator
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        CMmsSession& operator= ( const CMmsSession& );
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   179
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        /**
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        * Set UserAgent string to a fixed value.
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        * FOR TESTING PURPOSES ONLY.
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        */
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        void SetFixedUserAgentL();
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   185
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        /**
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        * Sets a header to be used throughout all transactions
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        * @param aHeaders the header collection where the new header is inserted
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        * @param aHdrField enumeration of the header field
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        * @param aHdsValue the string value of the header to be set
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        */
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        void SetHeaderL(
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            RHTTPHeaders aHeaders,
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            TInt aHdrField,
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            const TDesC8& aHdrValue );
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   196
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    public:     // Data
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    protected:  // Data
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    private:    // Data
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        enum TSessionStatus
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            {
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            ESessionIdle = 0,
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            ESessionSending,
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            ESessionFetching
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            };
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        TBool               iConnected;         // Do we have a connection to WAP GW       
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        CMmsTransaction*    iTransaction;       // state machine for making transactions
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        TRequestStatus*     iRequestStatus;     // status of the calling program        
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        TSessionStatus      iSessionStatus;     // Status of the session object                                  
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        RHTTPSession        iHTTPSession;       // transport session
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        THTTPSessionEvent   iHTTPEvent;         // event from HTTP
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        RHTTPHeaders        iSessionHeaders;    // headers common to all transactions
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        TBool               iHeadersCreated;    // if headers have not been created, they cannot be deleted
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        TBool               iSessionOpened;     // if HTTP session has not been opened, it cannot be closed
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        CMmsBearerStatus*   iTransferControl;
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        TInt                iTransactionTimeout;
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        TInt                iMaxReceiveSize;
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        TInt                iMaxSendSize;
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        TInt                iError;
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        RSocketServ*        iSocketServ;
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        RConnection*        iConnection;
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        HBufC8*             iUserAgent;
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        HBufC8*             iUaProf;
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        // pointer to the class that will serve as data supplier for chunked transfer.
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        // pointer is owned by caller - we don't delete it
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        MMmsCodecDataSupplier*  iDataSupplier;
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        // pointer to the class that will serve as data sink for chunked receive.
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        // pointer is owned by caller - we don't delete it
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        MMmsCodecDataSink*      iDataSink;
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    public:     // Friend classes
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    protected:  // Friend classes
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    private:    // Friend classes
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    };
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#endif      // MMSSESSION_H   
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// End of File