public RemoteDeviceState FindIfPresentOrConnected(byte[] bda)
{
WidcommBtInterface iface = m_factory.GetWidcommBtInterface();
int start;
start = Environment.TickCount;
Utils.MiscUtils.Trace_WriteLine("FiPoC: gonna IsRemoteDeviceConnected");
bool connected = iface.IsRemoteDeviceConnected(bda);
int tc = Environment.TickCount - start;
//
start = Environment.TickCount;
//TO-DO If this chap is slow, when connected==true we could exit before calling it.
//(...But it should be quick in that case!)
Utils.MiscUtils.Trace_WriteLine("FiPoC: gonna IsRemoteDevicePresent");
SDK_RETURN_CODE present0 = iface.IsRemoteDevicePresent(bda);
bool present = (present0 == SDK_RETURN_CODE.Success);
int tp = Environment.TickCount - start;
//--
#if NETCF
#else
Debug.Assert(present0 == SDK_RETURN_CODE.NotSupported);
Debug.Assert(connected == false);
const int ExpectedMilliseconds = 100;
Debug.Assert(tp < ExpectedMilliseconds, "slow Is-Present: " + tp);
Debug.Assert(tc < ExpectedMilliseconds, "slow Is-Connected: " + tc);
#endif
//--
RemoteDeviceState state;
if (connected)
{
state = RemoteDeviceState.Connected;
#if NETCF
Debug.Assert(present0 == SDK_RETURN_CODE.Success, "present0: " + present0);
#else
// On BTW IsConnected was implemented before IsPresent.
Debug.Assert(present0 == SDK_RETURN_CODE.NotSupported ||
present0 == SDK_RETURN_CODE.Success, "present0: " + present0);
#endif
}
else if (present0 == SDK_RETURN_CODE.NotSupported)
{
state = RemoteDeviceState.Unknown;
}
else if (present0 == SDK_RETURN_CODE.Success)
{
state = RemoteDeviceState.Present;
}
else
{
Debug.Assert(present0 == SDK_RETURN_CODE.Timeout, "present0: " + present0);
state = RemoteDeviceState.NotPresent;
}
Utils.MiscUtils.Trace_WriteLine("FindIfPresentOrConnected: c={0} + p={1} => {2}",
connected, present0, state);
return(state);
}
