examples/sfexamples/RockPaperScissorsGameSourceCode_S60/RPS/inc/BluetoothConnector.h

/*
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  may be used to endorse or promote products derived from this software
  without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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Description:  CBluetoothConnector has been implemented as a state machine that encapsulates all the BT stack
                   parts that are responsible for  managing the connection between a Master and a Slave.
 
                The CBluetoothConnector's state machine includes the following operations:
                1) Searching on the remote device (Slave) for available services
               2) Connecting to the remote device (Slave)
                3) Both sending and receiving data to/from the remote device (Slave)
                4) Callbacks to report to the App's engine the state machine error
                   and completion of events such as connection completed, report data, sending data completed.

 
                Note that if at any stage we receive an error then the state machine is reset to the EIdle
                state and all resources previously allocated are closed/cancelled
*/



#ifndef __BLUETOOTHCONNECTOR_H__
#define __BLUETOOTHCONNECTOR_H__

// INCLUDES
#include <bt_sock.h>
#include <btmanclient.h>
#include <btsdp.h>
#include "BluetoothSocketWriterReader.h"
#include "CommonInterfaces.h"

class CBluetoothDeviceDiscoverer;
class CBluetoothServiceSearcher;
class CBluetoothSockConnector;
class CSocketReader;
class CSocketWriter;

class CBluetoothConnector : public CBluetoothConnectionBase,
                                                        public MBluetoothServiceSearcherObserver,
                                                        public MSocketConnectorObserver,
                                                        public MSocketWriterReaderObserver
    {
public:
        enum TConnectorState
                {
            EIdle,                              //State machine entry point
            ESearchingService,  //Searching for a service on the remote BT device
            EConnecting,                //Connecting to the remote BT device
            EWaitingForData,    //Listening for incoming data
            ESendingData,               //Sending data to the remote BT device
            };
public:
    static CBluetoothConnector* NewL(MBluetoothObserver& aConnObs, RSocketServ& aSocketServer, const TBTDevAddr& aDevAddr);

    ~CBluetoothConnector();

public: //From CBluetoothConnectionBase
        void SendData(const TDesC8& aData);

        void StartL();

private:
    CBluetoothConnector(MBluetoothObserver& aConnObs, RSocketServ& aSocketServer, const TBTDevAddr& aDevAddr);

    void ConstructL();
    
private:        // From CActive
        virtual void RunL();
        
        virtual void DoCancel();
        
        virtual TInt RunError(TInt aError);
        
        //From MBluetoothServiceSearcherObserver
        void OnServiceSearchComplete(TInt aPort, TInt aError);

        //From MSocketConnectorObserver
        void OnSockConnectionComplete(TInt aError);

private:        //From MSocketWriterReaderObserver
        void WriteComplete(TInt aError);
        
        void ReportData(const TDesC8& aData, TInt aError);
        
        void SearchServiceL();
        
        void ConnectDeviceL();
        
        void WaitForData();
        
        void CancelSocket();
        
        void SelfComplete();
        
private:
        MBluetoothObserver& iConnObs;
        
        RSocketServ& iSocketServer;
        
        TBTDevAddr iBtDevAddr;
        
        RSocket iBtSocket;
        
        TConnectorState iState;
        
        CBluetoothServiceSearcher* iServiceSearcher;
        
        CBluetoothSockConnector* iSocketConnector;
        
        TInt iPort;
        
        CSocketReader* iBtSocketReader;
        
        CSocketWriter* iBtSocketWriter;

        TInt iMaxIterConnection;

        TBool iConnected;
    };

#endif

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