private void StartScannerThread()
{
EndPoint localEp = _localEp;
_cancellationTokenSource = new CancellationTokenSource();
CancellationToken ct = _cancellationTokenSource.Token;
_scannerThread = Task.Run(async() =>
{
while (!ct.IsCancellationRequested)
{
try
{
byte[] response = new byte[8000];
int no = _socket.ReceiveFrom(response, ref localEp);
string str = Encoding.UTF8.GetString(Decrypt(response.Take(no).ToArray()));
JObject obj = ParserHelpers.ParseGetSysInfo(str);
if (obj == null)
{
continue;
}
DeviceType deviceType = ParserHelpers.GetDeviceType(obj);
if (GetDeviceTypeFilter()?.Contains(deviceType) == false)
{
Debug.WriteLine("Excluded device");
continue;
}
var requestContext = new RequestContext(obj, (localEp as IPEndPoint)?.Address);
DeviceStateInfo state = await _deviceManager.AddOrUpdate(requestContext).ConfigureAwait(false);
switch (state.State)
{
case DeviceState.Added:
DeviceDiscovered?.Invoke(this, new DeviceEventArgs(state.Device));
break;
case DeviceState.Updated:
DeviceUpdated?.Invoke(this, new DeviceEventArgs(state.Device));
break;
}
}
catch (Exception e)
{
Debug.WriteLine(e);
}
}
}, ct);
}