bluetoothclient.h

Symbian OS 蓝牙聊天程序

#ifndef BLUETOOTHCLIENT_H_
#define BLUETOOTHCLIENT_H_
// System Includes
#include <bt_sock.h>

// User defined includes
#include "BluetoothDefinitions.h" // KMaxMessageLength

// Forward Declaration
class MBluetoothObserver;

// CLASS DECLARATION

/**
*
* This is the Bluetooth Client and handles setting up sockets for Bluetooth communications
*
* It requires an observer to handle UI feedback on certain events
*
*/
class CBluetoothClient : public CActive
	{
	public: // Constructors
		static CBluetoothClient* 	NewL(MBluetoothObserver& aObserver);
		~CBluetoothClient();

	private: // Constructors - Symbian 2nd stage
		CBluetoothClient(MBluetoothObserver& aObserver);
		void 				ConstructL();

	public: // Member functions
		void 				ConnectToServerL(const TBTDevAddr& aBTDevAddr, const TInt aPort);
		void 				Send(const TDesC& aMessage);
		TBool 				IsConnected();
		TBool 				AvailableToSend();

	public:	// Member functions from CActive
		void 				RunL();
		void 				DoCancel();

	private: // member functions, utility functions
		void 				Disconnect();
		void 				RequestData();
		void 				SendL(const TDesC& aMessage);

	private: // Private member data
		RSocketServ										iSocketServer;
		RSocket											iSendingSocket;
		TBTSockAddr										iSocketAddress;
		TBuf8<KMaxMessageSizeDesc16 + sizeof (TInt)>	iMessage;
		TSockXfrLength 									iLen;
		MBluetoothObserver&								iObserver;

	private: // State machine definition
		enum TState 
			{
			EDisconnected,
			EConnecting,
			EConnected,
			EWaitingForMessage,
			ESendData
			};
	
		TState				iState;
	};
#endif /*BLUETOOTHCLIENT_H_*/