AliveState.h

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#ifndef ALIVE_STATE_H
#define ALIVE_STATE_H

#include <memory>
#include <boost/asio/deadline_timer.hpp>

class AliveState: public std::enable_shared_from_this<AliveState> {
public:
    // CTOR and DTOR
    AliveState(boost::asio::io_service& a_IOService);
    ~AliveState();
    
    // Register callback methods
    void SetSendProbeCallback(std::function<void()> a_SendProbeCallback);
    void SetChangeBaudrateCallback(std::function<void()> a_ChangeBaudrateCallback);
    
    // Start and stop processing
    void Start();
    void Stop();
    
    // Notification regarding incoming data, and query methods
    bool OnFrameReceived();
    bool IsAlive() const;
    
private:
    // Helpers
    void Reset();
    void StartStateTimer();
    void StartProbeTimer();
    
    // Members
    typedef enum {
        ALIVESTATE_PROBING   = 0, 
        ALIVESTATE_FOUND     = 1, 
        ALIVESTATE_REPROBING = 2, 
    } E_ALIVESTATE;
    E_ALIVESTATE m_eAliveState;   
    
    // Callbacks
    std::function<void()> m_SendProbeCallback;      
    std::function<void()> m_ChangeBaudrateCallback; 
    
    // Timer and timer handlers
    boost::asio::deadline_timer m_StateTimer; 
    boost::asio::deadline_timer m_ProbeTimer; 
    void OnStateTimeout();
    void OnProbeTimeout();
    
    // Observation
    bool m_bFrameWasReceived; 
    int m_ProbeCounter;       
};

#endif // ALIVE_STATE_H