/// <summary>
/// Change state
/// </summary>
/// <param name="state">instance of state to change to</param>
private void ChangeState(IAbstractState state)
{
_state.OnExit();
_state = state;
_state.OnEntry();
}
/// <summary>
/// Call/Session constructor. Initializes call states, creates signaling proxy, initialize time,
/// initialize timers.
/// </summary>
/// <param name="manager">reference to call manager</param>
public CStateMachine()
{
// store manager reference...
_manager = CCallManager.Instance;
// create call proxy
_sigProxy = _manager.StackProxy.createCallProxy();
// initialize call states
_stateIdle = new CIdleState(this);
_stateAlerting = new CAlertingState(this);
_stateActive = new CActiveState(this);
_stateCalling = new CConnectingState(this);
_stateReleased = new CReleasedState(this);
_stateIncoming = new CIncomingState(this);
_stateHolding = new CHoldingState(this);
_stateTerminated = new CTerminatedState(this);
// change state
_state = _stateIdle;
// initialize data
Time = DateTime.Now;
Duration = TimeSpan.Zero;
// Initialize timers
if (null != _manager)
{
_noreplyTimer = _manager.Factory.createTimer();
_noreplyTimer.Interval = 15000; // hardcoded to 15s
_noreplyTimer.Elapsed = new TimerExpiredCallback(_noreplyTimer_Elapsed);
_releasedTimer = _manager.Factory.createTimer();
_releasedTimer.Interval = 5000; // hardcoded to 5s
_releasedTimer.Elapsed = new TimerExpiredCallback(_releasedTimer_Elapsed);
_noresponseTimer = _manager.Factory.createTimer();
_noresponseTimer.Interval = 60000; // hardcoded to 60s
_noresponseTimer.Elapsed = new TimerExpiredCallback(_noresponseTimer_Elapsed);
}
}