public void Start(TracingInformation tracingInformation)
{
if (tracingInformation == null || _enabled)
{
return;
}
_tracingInformation = tracingInformation;
_peripheralManager.RemoveAllServices();
CBUUID uuidService = CBUUID.FromString(tracingInformation.ServiceId);
CBUUID uuidCharacteristic = CBUUID.FromString(tracingInformation.CharacteristicId);
var data = NSData.FromArray(PayloadFormatter.GetBytesToSend(new PackageData(tracingInformation.DeviceId)));
var characteristic = new CBMutableCharacteristic(uuidCharacteristic, CBCharacteristicProperties.Read, data, CBAttributePermissions.Readable);
var service = new CBMutableService(uuidService, true);
service.Characteristics = new CBCharacteristic[] { characteristic };
_peripheralManager.AddService(service);
StartAdvertisingOptions advData = new StartAdvertisingOptions {
ServicesUUID = new CBUUID[] { uuidService }
};
_peripheralManager.StartAdvertising(advData);
TracingState.Instance.SetAdvertisingState(true);
_enabled = true;
_logger.LogDebug("Advertising starting. DeviceId: " + _tracingInformation.DeviceId);
}
public void HandleDeviceCommunicationDiscoveredCharacteristicRead(DeviceDescriptor descriptor, byte[] payload, Action <DeviceDescriptor> onNext = null)
{
try
{
if (_discoveredDevices.TryGetValue(descriptor.Identifier, out var deviceDescriptor))
{
try
{
if (PayloadFormatter.TryGetValue(payload, out var packageData))
{
_logger.LogDebug(
$"DeviceManager - Characteristic read - processing. id: {descriptor.Identifier}.");
deviceDescriptor.Context = descriptor.Context;
var contact = new ContactDescriptor(packageData.DeviceId, DateTime.UtcNow);
DeviceProcessorProvider.GetInstance().Process(contact);
Monitor.Enter(deviceDescriptor.ProcessingLock);
try
{
deviceDescriptor.Processed = true;
}
finally
{
Monitor.Exit(deviceDescriptor.ProcessingLock);
}
}
}
catch (Exception ex)
{
_logger.LogError(ex, $"DeviceManager - Characteristic read - Processing failed. id: {deviceDescriptor.Identifier}.");
}
// Disconnect peripheral
onNext?.Invoke(deviceDescriptor);
}
}
catch (Exception ex)
{
_logger.LogError(ex,
$"DeviceManager - Characteristic read - Processing failed. id: {descriptor.Identifier}. Reason: {ex.Message}.");
}
}
public override void OnCharacteristicReadRequest(
BluetoothDevice device,
int requestId,
int offset,
BluetoothGattCharacteristic characteristic)
{
base.OnCharacteristicReadRequest(device, requestId, offset, characteristic);
if (_gattServer == null)
{
return;
}
var response = PayloadFormatter
.GetBytesToSend(new PackageData(_tracingInformation.DeviceId))
.Skip(offset)
.ToArray();
_logger.LogDebug($"Advertiser - Device connected. Sending response to {device.Address}. Offset={offset}, ResponseLength={response.Length}.");
_gattServer.SendResponse(device, requestId, GattStatus.Success, offset, response);
}
private string GetPayload(Message message, object payload)
{
return(PayloadFormatter.Serialize(message, payload));
}
