browserutilities/downloadmgr/DownloadMgrServEng/Inc/HttpConnHandler.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 16:17:46 +0300
branchRCL_3
changeset 93 79859ed3eea9
parent 62 c711bdda59f4
child 94 919f36ff910f
permissions -rw-r--r--
Revision: 201034 Kit: 201035
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/*
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* Copyright (c) 2002-2004 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 the License "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:  ?Description
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*
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*/
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#ifndef HTTPCONNHANDLER_H
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#define HTTPCONNHANDLER_H
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//  INCLUDES
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#include <e32base.h>
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#include <es_sock.h>
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#include <http.h>
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#include <commdbconnpref.h>
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// CONSTANTS
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//const ?type ?constant_var = ?constant;
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// MACROS
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//#define ?macro ?macro_def
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// DATA TYPES
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//enum ?declaration
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//typedef ?declaration
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//extern ?data_type;
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// FUNCTION PROTOTYPES
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//?type ?function_name(?arg_list);
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// FORWARD DECLARATIONS
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class CHttpClientAppInstance;
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class CHttpClientApp;
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class CHttpConnHandler;
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// CLASS DECLARATION
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class MConnectionCallback
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    {
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    public:
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        virtual void Connected() = 0;
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        virtual void Suspended() = 0;
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        // called if the connection is closed
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        // from outside (e.g. network loss)
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        virtual void Disconnected() = 0;
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        virtual void ConnectionFailed( TInt aError ) = 0;
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    };
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class MShutdownObserver
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    {
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    public:
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        virtual void ShutDown( TBool aFromDestructor = EFalse ) = 0;
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    };
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/**
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*  Connection handler's shutdown timer.
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*/
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NONSHARABLE_CLASS( CHttpConnShutdownTimer ) : public CActive
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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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        */
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        static CHttpConnShutdownTimer* NewL( MShutdownObserver* aObserver );
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        /**
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        * Destructor.
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        */
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        ~CHttpConnShutdownTimer();
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    private:
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        /**
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        * C++ default constructor.
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        */
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        CHttpConnShutdownTimer( MShutdownObserver* aObserver );
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        /**
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        * Default Symbian 2nd phase constructor .
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        */
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        void ConstructL();
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    public: // New functions
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        /**
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        * Starts the timer.
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        * @param 
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        * @return
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        */
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        void Start( TInt aTimeOut );
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    private: // From CActive
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        /**
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        * Cancels the timer.
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        * @param 
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        * @return
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        */
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        void DoCancel();
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        /**
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        * Handles an active object’s request completion event.
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        * @param 
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        * @return
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        */
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        void RunL();
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    private: // Data
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        RTimer iTimer;
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        MShutdownObserver* iObserver;   // owned
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    };
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class MConnectionObserver
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    {
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    public:
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        virtual void ConnectionStageChanged( TInt aStage ) = 0;
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        virtual void ConnectionError( TInt aError ) = 0;
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    };
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/**
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*  ?one_line_short_description.
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*  ?other_description_lines
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*
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*  @lib ?library
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*  @since Series 60 v2.8
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*/
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NONSHARABLE_CLASS( CHttpConnStageNotifier ) : public CActive
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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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        */
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        static CHttpConnStageNotifier* NewL( CHttpConnHandler* aConnHandler );
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        /**
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        * Destructor.
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        */
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        virtual ~CHttpConnStageNotifier();
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    public: // New functions
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        /**
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        * Starts connection stage notification
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        * @since Series 60 v2.8
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        * @return none.
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        */
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        void Start();
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    public: // Functions from base classes
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        /**
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        * methods from CActive
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        */
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	    void DoCancel();
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	    void RunL();
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    protected:  // New functions
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    protected:  // Functions from base classes
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    private:
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        /**
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        * C++ default constructor.
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        */
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        CHttpConnStageNotifier( CHttpConnHandler* aConnHandler );
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        /**
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        * By default Symbian 2nd phase constructor is private.
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        */
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        void ConstructL();
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        // Prohibit copy constructor if not deriving from CBase.
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        // CHttpConnStageNotifier( const CHttpConnStageNotifier& );
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        // Prohibit assigment operator if not deriving from CBase.
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        // CHttpConnStageNotifier& operator=( const CHttpConnStageNotifier& );
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    public:     // Data
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        // ?one_line_short_description_of_data
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        //?data_declaration;
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    protected:  // Data
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        CHttpConnHandler* iConnHandler;     // pointer to CHttpConnHandler.
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                                            // Not owned by this class!
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        TNifProgressBuf iProgressBuf;
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    private:    // Data
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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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/**
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*  ?one_line_short_description.
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*  ?other_description_lines
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*
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*  @lib ?library
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*  @since Series 60 v2.8
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*/
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NONSHARABLE_CLASS( CHttpConnHandler ) : public CActive,
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                                        public MConnectionObserver,
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                                        public MShutdownObserver
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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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        */
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        static CHttpConnHandler* NewL( CHttpClientApp* aClientApp );
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        /**
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        * Destructor.
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        */
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        virtual ~CHttpConnHandler();
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    public: // New functions
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        /**
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        * Starts asynchronous connect to the network.
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        * @since Series 60 v2.8
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        * @return none. Leaves on error.
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        */
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        void ConnectL();
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        /**
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        * Disconnects from the network. Counts how many download still
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        * using this connection. If there is no more, starts disconnection 
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        * timer.
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        * @since Series 60 v2.8
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        * @param aExit if ETrue disconnects at once
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        * @return none.
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        */
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        void Disconnect( TBool aAtOnce = EFalse,
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                         CHttpDownload* aDownload = NULL );
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        /**
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        * Returns associated IAP id.
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        * @since Series 60 v2.8
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        * @return IAPid used to create connection
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        */
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        TUint32 IapId() const;
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        /**
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        * Returns associated client application.
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        * @since Series 60 v2.8
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        * @return pointer to the client application. Ownership not passed.
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        */
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        CHttpClientApp* ClientApp() const;
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        /**
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        * Returns associated client application instance.
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        * @since Series 60 v2.8
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        * @return pointer to the client application instance. Ownership not passed.
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        */
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        CHttpClientAppInstance* ClientAppInst() const;
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        /**
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        * Returns the HTTP session.
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        * @since Series 60 v2.8
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        * @return HTTP session
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        */
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        RHTTPSession& Session();
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        /**
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        * Returns the RConnection.
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        * @since Series 60 v2.8
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        * @return reference to the RConnection
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        */
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        RConnection& Connection();
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        /**
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        * See EDlMgrConnectionName.
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        * @since Series 60 v2.8
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        * @return none. Leaves on failure.
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        */
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        HBufC* ConnectionNameL( TBool& aDelete );
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        /**
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        * See EDlMgrAPName.
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        * @since Series 60 v2.8
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        * @return none. Leaves on failure.
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        */
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        void APNameL( TPtrC16& aValue );
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        /**
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        * Returns the connection state.
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        * @since Series 60 v2.8
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        * @return ETrue if connected
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        */
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        TBool IsConnected();
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        /**
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        * Associates connection handler with the given client application
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        * instance.
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        * @since Series 60 v2.8
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        * @param aClientInst client instance to use this connection handler
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        * @return none.
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        */
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        void SetClientAppInst( CHttpClientAppInstance* aClientInst );
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        /**
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        * Sets IAP id to be used to create connection.
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        * Cannot be called after connection is created.
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        * @since Series 60 v2.8
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        * @param IAP id to be used to create connection.
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        * @return none.
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        */
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        void SetIapId( TUint32 aIapId );
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        /**
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        * Set connection name to be used to clone an already exist connection
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        * IAP id is ignored in this case.
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        */
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        void SetConnectionNameL( const TDesC& aConnName );
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    public: // Functions from base classes
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        /**
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        * methods from CActive
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        */
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        void DoCancel();
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        void RunL();
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        /**
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        * methods from CHttpConnStageNotifier
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        */
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        void ConnectionStageChanged( TInt aStage );
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        void ConnectionError( TInt aError );
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        /**
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        * methods from MShutdownObserver
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        */
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        void ShutDown( TBool aFromDestructor = EFalse );
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    protected:  // New functions
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        /**
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        * Initializes HTTP session.
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        * @since Series 60 v2.8
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        * @return none. Leaves on error.
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        */
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        void InitSessionL();
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        /**
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        * Sets connection info in HTTP session.
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        * @since Series 60 v2.8
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        * @return none. Leaves on error.
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        */
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        void SetConnectionInfoL();
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        /**
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        * Called if connection is successfully created.
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   373
        * @since Series 60 v2.8
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   374
        * @return none.
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   375
        */
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   376
        void Connected();
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   377
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   378
        /**
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   379
        * Returns the number of downloads using this connection handler.
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   380
        * @since Series 60 v2.8
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   381
        * @return number of downloads using this connection handler
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   382
        */
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   383
        TInt Referencies();
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   384
        
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   385
        /**
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   386
        * Updates iIapId after connection made.
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   387
        * @since Series 60 v3.0
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   388
        * @return None.
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   389
        */
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   390
        void UpdateIapId();
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   391
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   392
    protected:  // Functions from base classes
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   393
        
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   394
    private:
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   395
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   396
        /**
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   397
        * C++ default constructor.
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   398
        */
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   399
        CHttpConnHandler( CHttpClientApp* aClientApp );
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   400
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   401
        /**
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   402
        * By default Symbian 2nd phase constructor is private.
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   403
        */
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   404
        void ConstructL();
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   405
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   406
    public:     // Data
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   407
        // ?one_line_short_description_of_data
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   408
        //?data_declaration;
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   409
    
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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   410
    protected:  // Data
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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   411
        // ?one_line_short_description_of_data
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   412
        //?data_declaration;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   413
        RHTTPSession    iHttpSession;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   414
        RConnection     iConnection;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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   415
        TCommDbConnPref iPref;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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   416
        TUint32         iIapId;             // See EDlMgrIap
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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   417
        CHttpClientAppInstance* iClientInst;// Associated client app instance. not owned
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   418
        CHttpClientApp* iClientApp;         // This is needed because instance can be
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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   419
                                            // closed while associated conn handler 
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parents:
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   420
                                            // stays active. not owned
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   421
        CHttpConnStageNotifier* iConnNotif; // Connection stage notifier. owner
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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   422
        CHttpConnShutdownTimer* iShutDown;  // Shutdown timer after last reference is closed.
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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   423
                                            // owned
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   424
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   425
        TInt    iConnStage;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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   426
        HBufC*  iConnName;                  // owned
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   427
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   428
    private:    // Data
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   429
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   430
        TBool iNewConnection;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   431
        
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   432
        // Reserved pointer for future extension
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   433
        //TAny* iReserved;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   434
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   435
    public:     // Friend classes
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   436
        //?friend_class_declaration;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   437
    protected:  // Friend classes
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   438
        //?friend_class_declaration;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   439
    private:    // Friend classes
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   440
        //?friend_class_declaration;
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   441
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   442
    };
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   443
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   444
#endif      // HTTPCONNHANDLER_H   
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   445
            
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   446
// End of File