internal BluetopiaError QueryName(BluetopiaDeviceInfo device,
bool mayUseCached, bool mayQueryName)
{
const int CancelBlockingTimeSeconds = 2;
lock (_lockDevices) {
if (mayUseCached)
{
BluetopiaDeviceInfo prev;
var got = _knownDevices.TryGetValue(device.DeviceAddress, out prev);
if (prev != null && prev.HasDeviceName)
{
device.SetName(prev.DeviceName);
return(BluetopiaError.OK);
}
}
//
if (!mayQueryName)
{
return(BluetopiaError.OK);
}
var since = DateTime.UtcNow - _lastCancelAllQueryNames;
if (since.TotalSeconds < CancelBlockingTimeSeconds)
{
Debug.WriteLine("QueryName blocked");
return(BluetopiaError.OK);
}
else //DEBUG
{
}
List <BluetopiaDeviceInfo> instList;
var exists = _nameQueryList.TryGetValue(device.DeviceAddress, out instList);
if (instList == null)
{
Debug.Assert(!exists, "Null Value!?!");
instList = new List <BluetopiaDeviceInfo>();
_nameQueryList.Add(device.DeviceAddress, instList);
}
if (instList.Contains(device))
{
// Already querying...
return(BluetopiaError.OK);
}
instList.Add(device);
}//lock
var ret = _api.GAP_Query_Remote_Device_Name(this.StackId,
BluetopiaUtils.BluetoothAddressAsInteger(device.DeviceAddress),
_HandleNameLookup, 0);
BluetopiaUtils.WriteLineIfError(ret, "GAP_Query_Remote_Device_Name");
return(ret);
}
