iapconnectdemoengine.h

这是一个手机编程s60 基于c++的关于手机连接internet的数据库协议

/*
* ============================================================================
*  Name     : CIAPConnectDemoEngine from ConnMngrDemoEngine.h
*  Part of  : Internet Access Points Example v2.0
*  Created  : 01.09.2006 by Forum Nokia
*  Version  : 2.0
*  Copyright: Forum Nokia
* ============================================================================
*/

#ifndef DEMOENGINE_H
#define DEMOENGINE_H

// INCLUDES
#include <in_sock.h>
#include "IAPConnectDemoSocketsObserver.h"
#include "IAPConnectDemoEngineObserver.h"
#include "IAPConnect.hrh"

// FORWARD DECLARATIONS
class CIAPConnectDemoSocketsReader;
class CIAPConnectDemoSocketsWriter;
class CIAPConnectDemoSettings;
class CIAPConnectDemoDataNotification;

// CLASS DECLARATION

class CIAPConnectDemoEngine : public CActive,
                       public MIAPConnectDemoSocketsObserver
    {
public: // Constructors and destructors

	/**
	* Two-phased constructor
	*/
	static CIAPConnectDemoEngine* NewL( 
        MIAPConnectDemoEngineObserver* aObserver, 
		RConnection& aConnection, RSocketServ& aSocketServ );

	/**
	* Two-phased constructor
	*/
	static CIAPConnectDemoEngine* NewLC( 
        MIAPConnectDemoEngineObserver* aObserver,
		RConnection& aConnection, RSocketServ& aSocketServ );

	/**
	* Destructor
	*/
	virtual ~CIAPConnectDemoEngine( );

public: // New functions

    /**
    * Initiates the demo
    * @param aSettings the settings used in the demo.
    */
    void StartDemoL( CIAPConnectDemoSettings* aSettings );

    /**
    * Stops the demo
    */
    void StopDemoL();

    /**
    * Disconnects socket.
    */
    void DisconnectL();

	/**
	* Writes data to socket.
	* @param aData Data to be written.
	*/
	void WriteL( const TDesC8& aData );

	/**
	* Initiates read of data from socket.
	*/
	void ReadL();

	/**
	* Checks if socket is fully connected.
	* @return ETrue if socket is connected.
	*/
	TBool Connected() const;

	/**
	* Handles a change in this object's status.
	* @param aNewStatus New status.
	*/
	void ChangeStatusL( const TIAPConnectDemoEngineStates& aNewStatus );
        
public: // Functions from base classes

	/**
	* From MTimeOutNotifier
	*/
	void TimerExpiredL();

	/**
	* From MIAPConnectDemoSocketsObserver
	*/
	void ReportErrorL( 
        const MIAPConnectDemoSocketsObserver::TDemoErrorType& aErrorType,
	    const TInt& aErrorCode );

	/**
	* From MIAPConnectDemoSocketsObserver
	*/
	void ResponseReceivedL( const TDesC8& aBuffer );
        
        
private: // Functions from base classes

	/**
	* From CActive
	*/
	void DoCancel();

	/**
	* From CActive
	*/
	void RunL();

private:

	/**
	* Symbian OS default constructor
	*/
	CIAPConnectDemoEngine( 
        MIAPConnectDemoEngineObserver* aObserver,
		RConnection& aConnection, RSocketServ& aSocketServ );
	void ConstructL();
	
private: // New functions

	/**
	* Initiates a connect operation on a socket.
	* @param aAddr The ip address to connect to.
	*/
	void ConnectL( TUint32 aAddr );

	/**
	* Resolves the IP address from a server address.
	*/
	void ResolveAddressL();
        
private: // Constants

private: // Data members

	TIAPConnectDemoEngineStates iEngineStatus;

	RSocket iSocket;

	CIAPConnectDemoSocketsReader* iSocketsReader;

	CIAPConnectDemoSocketsWriter* iSocketsWriter;

	RSocketServ iSocketServ;

	RHostResolver iResolver;

	TNameEntry iNameEntry;

	TNameRecord iNameRecord;

	TInetAddr iAddress;

	MIAPConnectDemoEngineObserver* iObserver;  // Now owned by this class

	CIAPConnectDemoSettings* iSettings;

	RConnection iConnection;

	CIAPConnectDemoDataNotification* iSentDataNotification;

	CIAPConnectDemoDataNotification* iReceivedDataNotification;
	};

#endif 

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