public IBluetoothDeviceInfo[] EndDiscoverDevices(IAsyncResult asyncResult)
{
AsyncResultDD arDD = (AsyncResultDD)asyncResult;
List_IBluetoothDeviceInfo discoverableDevices = arDD.EndInvoke();
DiscoDevsParams args = arDD.BeginParameters;
// DEBUG Iff 'known' devices only: we complete immediately (sync'ly), and with null result.
if (args.unknown || args.discoverableOnly)
{
// Result from BeginInquiry callback expected
Debug.Assert(discoverableDevices != null, "a1");
Debug.Assert(!arDD.CompletedSynchronously, "a2"); // don't really care however
}
else
{
// Null result from BeginDD method expected.
Debug.Assert(discoverableDevices == null, "b1");
Debug.Assert(arDD.CompletedSynchronously, "b2");
}
//
List_IBluetoothDeviceInfo knownDevices = GetKnownRemoteDeviceEntries();
//
List_IBluetoothDeviceInfo mergedDevices = BluetoothClient.DiscoverDevicesMerge(
args.authenticated, args.remembered, args.unknown, knownDevices, discoverableDevices,
args.discoverableOnly, args.discoTime);
return(mergedDevices.ToArray());
}
public IAsyncResult BeginDiscoverDevices(int maxDevices,
bool authenticated, bool remembered, bool unknown, bool discoverableOnly,
AsyncCallback callback, object state,
BluetoothClient.LiveDiscoveryCallback liveDiscoHandler, object liveDiscoState)
{
DateTime discoTime = DateTime.UtcNow;
DiscoDevsParams args = new DiscoDevsParams(maxDevices, authenticated, remembered, unknown, discoverableOnly, discoTime);
AsyncResultDD arDD = new AsyncResultDD(callback, state, args);
//
if (unknown || discoverableOnly) // No need to do SLOW Inquiry when just want known remembered.
{
BeginInquiry(maxDevices, DiscoDevs_InquiryCallback, arDD,
liveDiscoHandler, liveDiscoState, args);
}
else
{
arDD.SetAsCompleted(null, true);
}
return(arDD);
}
//----
public IAsyncResult BeginInquiry(int maxDevices, TimeSpan inquiryLength,
AsyncCallback asyncCallback, Object state,
BluetoothClient.LiveDiscoveryCallback liveDiscoHandler, object liveDiscoState,
ThreadStart startInquiry,
DiscoDevsParams args)
{
int fakeUseI = maxDevices;
AR_Inquiry ar;
AR_Inquiry sacAr = null;
List_IBluetoothDeviceInfo sacResult = null;
lock (_lockInquiry) {
if (_inquiryAr != null)
{
Debug.WriteLine("Merging concurrent DiscoverDevices call into the running one (will get same result list).");
// Just give any new request the same results as the outstanding Inquiry.
ar = new AR_Inquiry(asyncCallback, state, args);
if (_inquiryAr.IsCompleted)
{
// This can never occur (is nulled before SAC'd), but leave in anyway...
sacAr = ar;
sacResult = _inquiryDevices;
}
else
{
if (_arInquiryFollowers == null)
{
_arInquiryFollowers = new List <AR_Inquiry>();
}
_arInquiryFollowers.Add(ar);
}
}
else // New inquiry process.
{
ar = new AR_Inquiry(asyncCallback, state, args);
_inquiryAr = ar;
_arInquiryFollowers = null;
_inquiryDevices = new List_IBluetoothDeviceInfo();
_liveDiscoHandler = liveDiscoHandler;
_liveDiscoState = liveDiscoState;
bool siSuccess = false;
try {
startInquiry();
siSuccess = true;
} finally {
if (!siSuccess)
{
_inquiryAr = null;
}
}
if (inquiryLength.CompareTo(TimeSpan.Zero) > 0)
{
var tTmp = TimeSpan.FromMilliseconds(
checked (1.5 * inquiryLength.TotalMilliseconds));
System.Threading.ThreadPool.QueueUserWorkItem(InquiryTimeout_Runner,
new InquiryTimeoutParams(ar, tTmp));
}
}
}//lock
if (sacAr != null)
{
sacAr.SetAsCompleted(sacResult, true);
}
return(ar);
}
protected abstract void BeginInquiry(int maxDevices,
AsyncCallback callback, object state,
BluetoothClient.LiveDiscoveryCallback liveDiscoHandler, object liveDiscoState,
DiscoDevsParams args);
