public override void DiscoveredService(CBPeripheral peripheral, NSError error)
{
var descriptor = peripheral.ToDeviceDescriptor();
if (error != null)
{
_deviceManager.HandleDeviceCommunicationDiscoveryServiceError(descriptor, error.LocalizedFailureReason, (d) =>
{
_centralManager.CancelPeripheralConnection(peripheral);
});
return;
}
CBUUID uuidCharacteristic = CBUUID.FromString(_tracingInformation.CharacteristicId);
CBUUID uuidService = CBUUID.FromString(_tracingInformation.ServiceId);
var service = peripheral.Services.FirstOrDefault(x => x.UUID == uuidService);
if (service != null)
{
_deviceManager.HandleDeviceCommunicationDiscoveredService(descriptor, (d) =>
{
peripheral.DiscoverCharacteristics(new[] { uuidCharacteristic }, service);
});
}
else
{
_deviceManager.HandleIncorrectDevice(descriptor);
_centralManager.CancelPeripheralConnection(peripheral);
}
}
protected override Task <IEnumerable <ICharacteristic> > GetCharacteristicsNativeAsync()
{
//TODO: review: is this correct? Event was not used, yet
var tcs = new TaskCompletionSource <IEnumerable <ICharacteristic> >();
EventHandler <CBServiceEventArgs> handler = null;
handler = (sender, args) =>
{
_device.DiscoveredCharacteristic -= handler;
if (args.Error == null)
{
var characteristics = _service.Characteristics.Select(characteristic => new Characteristic(characteristic, _device));
tcs.TrySetResult(characteristics);
}
else
{
Trace.Message("Could not discover characteristics: {0}", args.Error.Description);
// TODO: use proper exception
tcs.TrySetException(new Exception());
}
};
_device.DiscoveredCharacteristic += handler;
_device.DiscoverCharacteristics(_service);
return(tcs.Task);
}
public async Task <CBCharacteristic[]> GetCharacteristics(CBPeripheral peripheral, CBService service, int scanTime)
{
peripheral.DiscoverCharacteristics(service);
await Task.Delay(scanTime);
return(service.Characteristics);
}
private void HandleDiscoveredService(object sender, NSErrorEventArgs e)
{
CBPeripheral peripheral = sender as CBPeripheral;
if (peripheral == null || peripheral != Peripheral)
return;
int servicesCount = peripheral.Services.Length;
peripheral.DiscoveredCharacteristic += (o, es) =>
{
servicesCount--;
if (servicesCount == 0)
{
IsServiceDiscovered = true;
if (e.Error == null)
{
OnServicesDiscovered(this, new BleServicesDiscoveredEventArgs(BleGattOperationState.Success));
ConnectionState = BleConnectionState.ConnectedWithServices;
}
else
{
OnServicesDiscovered(this, new BleServicesDiscoveredEventArgs(BleGattOperationState.Failure));
}
}
};
foreach (CBService service in peripheral.Services)
{
peripheral.DiscoverCharacteristics(service);
}
}
protected override Task <IList <ICharacteristic> > GetCharacteristicsNativeAsync()
{
return(TaskBuilder.FromEvent <IList <ICharacteristic>, EventHandler <CBServiceEventArgs> >(
execute: () => _device.DiscoverCharacteristics(_service),
getCompleteHandler: (complete, reject) => (sender, args) =>
{
if (args.Error != null)
{
reject(new Exception($"Discover characteristics error: {args.Error.Description}"));
}
else
if (args.Service?.Characteristics == null)
{
reject(new Exception($"Discover characteristics error: returned list is null"));
}
else
{
var characteristics = args.Service.Characteristics
.Select(characteristic => new Characteristic(characteristic, _device, this))
.Cast <ICharacteristic>().ToList();
complete(characteristics);
}
},
subscribeComplete: handler => _device.DiscoveredCharacteristic += handler,
unsubscribeComplete: handler => _device.DiscoveredCharacteristic -= handler));
}
Task <IReadOnlyList <GattCharacteristic> > PlatformGetCharacteristics()
{
TaskCompletionSource <IReadOnlyList <GattCharacteristic> > tcs = new TaskCompletionSource <IReadOnlyList <GattCharacteristic> >();
CBPeripheral peripheral = Device;
void handler(object sender, CBServiceEventArgs args)
{
peripheral.DiscoveredCharacteristic -= handler;
if (args.Error != null)
{
tcs.SetException(new Exception(args.Error.ToString()));
}
List <GattCharacteristic> characteristics = new List <GattCharacteristic>();
foreach (CBCharacteristic cbcharacteristic in _service.Characteristics)
{
characteristics.Add(new GattCharacteristic(this, cbcharacteristic));
}
tcs.SetResult(characteristics.AsReadOnly());
}
peripheral.DiscoveredCharacteristic += handler;
peripheral.DiscoverCharacteristics(_service);
return(tcs.Task);
}
public override async void DiscoveredService(CBPeripheral peripheral, NSError error)
{
try
{
if (error == null)
{
var services = new List <GattService>();
if (_peripheral.Services != null)
{
foreach (var service in _peripheral.Services)
{
_discoverCompletionSource = new TaskCompletionSource <IEnumerable <IGattCharacteristic> >(TaskCreationOptions.RunContinuationsAsynchronously);
_peripheral.DiscoverCharacteristics(service);
var result = await _discoverCompletionSource.Task;
_discoverCompletionSource = null;
if (result != null)
{
services.Add(new GattService(service, result));
}
else
{
lock (_lock)
{
DisconnectInternal();
_connectCompletionSource?.SetResult(null);
}
return;
}
}
}
lock (_lock)
{
State = BluetoothLEDeviceState.Connected;
_connectCompletionSource?.SetResult(services);
return;
}
}
else
{
lock (_lock)
{
DisconnectInternal();
_connectCompletionSource?.SetResult(null);
}
}
}
catch (Exception)
{
lock (_lock)
{
DisconnectInternal();
_connectCompletionSource?.SetResult(null);
}
}
}
public override void DiscoveredService(CBPeripheral peripheral, NSError error)
{
System.Console.WriteLine ("Discovered a service");
foreach (var service in peripheral.Services) {
Console.WriteLine (service.ToString ());
peripheral.DiscoverCharacteristics (service);
}
}
public override void DiscoveredService(CBPeripheral peripheral, NSError error)
{
_parent.OnStatusUpdated("Discovering characteristics");
_peripheral = peripheral;
var service = peripheral.GetService(ServiceUuid);
peripheral.DiscoverCharacteristics(service);
}
public override void DiscoveredService(CBPeripheral peripheral, NSError error)
{
// Discover all the characteristics of the services contained in peripheral.Services
foreach (var service in peripheral.Services)
{
peripheral.DiscoverCharacteristics(service);
}
}
public override void DiscoveredService(CBPeripheral peripheral, NSError error)
{
System.Console.WriteLine("Discovered a service");
foreach (var service in peripheral.Services)
{
Console.WriteLine(service.ToString());
peripheral.DiscoverCharacteristics(service);
}
}
public void DiscoverCharacteristicsFor(Service service)
{
// The event should probably have been called "DiscoveredCharacteristics"
// instead of "DiscoveredCharacteristic" - at least it seems like it
// will only be called once per service.
connectedCbPeripheral.DiscoveredCharacteristic += DiscoveredCharacteristicsForService;
var cbService = FindService(service);
connectedCbPeripheral.DiscoverCharacteristics(cbService);
}
public void SetPeripheralAndService(CBPeripheral peripheral, CBService service)
{
connectedPeripheral = peripheral;
connectedPeripheral.DiscoveredCharacteristic += (sender, e) => {
HandleDiscoveredCharacteristic((CBPeripheral)sender, service);
};
// when a descriptor is dicovered, reload the table.
connectedPeripheral.DiscoveredDescriptor += HandleDiscoveredDescriptor;
// discover the charactersistics
connectedPeripheral.DiscoverCharacteristics(service);
}
public void SetPeripheralAndService (CBPeripheral peripheral, CBService service)
{
connectedPeripheral = peripheral;
connectedPeripheral.DiscoveredCharacteristic += (sender, e) => {
HandleDiscoveredCharacteristic((CBPeripheral)sender, service);
};
// when a descriptor is dicovered, reload the table.
connectedPeripheral.DiscoveredDescriptor += HandleDiscoveredDescriptor;
// discover the charactersistics
connectedPeripheral.DiscoverCharacteristics(service);
}
public override void DiscoveredIncludedService(CBPeripheral peripheral, CBService service, NSError error)
{
client.completedInc += 1;
peripheral.Delegate = this;
if (service.IncludedServices != null)
{
client.serviceObjects.AddRange(service.IncludedServices);
client.charCallCount += service.IncludedServices.Count();
foreach (var s in service.IncludedServices)
{
peripheral.DiscoverCharacteristics(null, s);
}
}
client.allDiscovered();
}
public override void DiscoveredService(CBPeripheral peripheral, NSError error)
{
if (disposed)
{
return;
}
foreach (var service in peripheral.Services)
{
if (service.UUID == PeripheralUUID)
{
peripheral.DiscoverCharacteristics(service);
}
}
}
public async partial Task <IEnumerable <GattCharacteristic> > GetCharacteristicsAsync(IEnumerable <Guid>?uuids)
{
var cbUuids = uuids?.Select(x => CBUUID.FromString(x.ToString())).ToArray();
var errorAwaiter = @delegate.DiscoveredCharacteristicObservable.FirstAsync(x => x.service == service).GetAwaiter();
peripheral.DiscoverCharacteristics(cbUuids, service);
var(_, error) = await errorAwaiter;
if (error is not null)
{
throw new NSErrorException(error);
}
return(service.Characteristics?.Select(x => new GattCharacteristic(peripheral, @delegate, this, x))
?? Enumerable.Empty <GattCharacteristic>());
}
public override void DiscoveredService(CBPeripheral peripheral, NSError error)
{
peripheral.Delegate = this;
if (peripheral.Services != null)
{
client.serviceObjects.AddRange(peripheral.Services);
client.charCallCount = client.serviceObjects.Count;
client.incCallCount = client.serviceObjects.Count;
client.descCallCount = 0;
foreach (var service in peripheral.Services)
{
peripheral.DiscoverIncludedServices(null, service);
peripheral.DiscoverCharacteristics(null, service);
}
}
}
protected override Task <IList <ICharacteristic> > GetCharacteristicsNativeAsync()
{
var exception = new Exception($"Device '{Device.Id}' disconnected while fetching characteristics for service with {Id}.");
return(TaskBuilder.FromEvent <IList <ICharacteristic>, EventHandler <CBServiceEventArgs>, EventHandler <CBPeripheralErrorEventArgs> >(
execute: () =>
{
if (_device.State != CBPeripheralState.Connected)
{
throw exception;
}
_device.DiscoverCharacteristics(_service);
},
getCompleteHandler: (complete, reject) => (sender, args) =>
{
if (args.Error != null)
{
reject(new Exception($"Discover characteristics error: {args.Error.Description}"));
}
else
if (args.Service?.Characteristics == null)
{
reject(new Exception($"Discover characteristics error: returned list is null"));
}
else
{
var characteristics = args.Service.Characteristics
.Select(characteristic => new Characteristic(characteristic, _device, this, _bleCentralManagerDelegate))
.Cast <ICharacteristic>().ToList();
complete(characteristics);
}
},
subscribeComplete: handler => _device.DiscoveredCharacteristic += handler,
unsubscribeComplete: handler => _device.DiscoveredCharacteristic -= handler,
getRejectHandler: reject => ((sender, args) =>
{
if (args.Peripheral.Identifier == _device.Identifier)
{
reject(exception);
}
}),
subscribeReject: handler => _bleCentralManagerDelegate.DisconnectedPeripheral += handler,
unsubscribeReject: handler => _bleCentralManagerDelegate.DisconnectedPeripheral -= handler));
}
static void OnPeripheralDiscoveredService(object sender, NSErrorEventArgs e)
{
if (e.Error != null)
{
Console.WriteLine(e.Error);
peripheral.DiscoverServices();
return;
}
foreach (CBService s in (sender as CBPeripheral).Services)
{
Console.WriteLine("Discovered service {0}", s);
peripheral.DiscoverCharacteristics(s);
}
}
/// <summary>
/// Occurs when a new service is discovered for the peripheral
/// </summary>
/// <param name="peripheral">Peripheral.</param>
/// <param name="error">Error.</param>
public override void DiscoveredService(CBPeripheral peripheral, NSError error)
{
if (monitor.disposed)
{
return;
}
foreach (var service in peripheral.Services)
{
// Right now limited to POC and Zephyr services
if (service.UUID == BluetoothIdentifiers.POCServiceUUID ||
service.UUID == BluetoothIdentifiers.ZephyrServiceUUID) //GetCBUUID(S_PERIPHERAL_UUID))
{
peripheral.DiscoverCharacteristics(service);
}
Console.WriteLine($"discovered service: {service.UUID}");
}
}
public void DiscoveredService(CBPeripheral peripheral, NSError error)
{
Debug.WriteLine($"Peripheral_DiscoveredService: {peripheral.Name}");
CBService foundService = null;
foreach (var service in peripheral.Services)
{
if (service.UUID == OWBoard.ServiceUUID.ToCBUUID())
{
foundService = service;
break;
}
}
if (foundService != null)
{
_service = foundService;
_peripheral.DiscoverCharacteristics(_service);
}
}
private async Task MapDevice(Device device, CBPeripheral nativeDevice)
{
nativeDevice.DiscoveredService += nativeDevice_DiscoveredService;
nativeDevice.DiscoverServices();
await Task.Run(() => _servicesDiscovered.WaitOne(TimeSpan.FromSeconds(10)));
nativeDevice.DiscoveredService -= nativeDevice_DiscoveredService;
_servicesDiscovered.Reset();
foreach (var cbService in nativeDevice.Services)
{
nativeDevice.DiscoveredCharacteristic += nativeDevice_DiscoveredCharacteristic;
nativeDevice.DiscoverCharacteristics(cbService);
await Task.Run(() => _characteristicsDiscovered.WaitOne(TimeSpan.FromSeconds(10)));
nativeDevice.DiscoveredCharacteristic -= nativeDevice_DiscoveredCharacteristic;
_characteristicsDiscovered.Reset();
var service = new Service()
{
Id = BluetoothConverter.ConvertBluetoothLeUuid(cbService.UUID.Uuid),
Device = device,
Characteristics = new List <Characteristic>()
};
foreach (var cbCharacteristic in cbService.Characteristics)
{
var characteristic = await ConvertCharacteristic(cbCharacteristic);
characteristic.Service = service;
service.Characteristics.Add(characteristic);
}
service.Device = device;
device.Services.Add(service);
}
}
public void DiscoverCharacteristics(IBLEService service)
{
nativePeripheral.DiscoverCharacteristics(service.NativeService as CBService);
}
internal Task <List <IBLECharacteristic> > GetCharacteristicsAsync(CBPeripheral peripheral, TaskCompletionSource <List <IBLECharacteristic> > characteristicDiscoveryTCS)
{
characteristicDiscoveryTCS = new TaskCompletionSource <List <IBLECharacteristic> >();
peripheral.DiscoverCharacteristics(_nativeService);
return(characteristicDiscoveryTCS.Task);
}
/// <summary>
/// Discovers the characteristics for the services.
/// </summary>
public void DiscoverCharacteristics()
{
_peripheral.DiscoverCharacteristics(NativeService);
}
public override void DiscoveredPeripheral(CBCentralManager central, CBPeripheral peripheral, NSDictionary advertisementData, NSNumber RSSI)
{
peripheral.DiscoveredService += (sender, e) =>
{
try
{
if (e.Error == null)
{
// discover characteristics for newly discovered services
foreach (CBService service in peripheral.Services)
{
if (service.UUID.Equals(_probe.DeviceIdService.UUID))
{
peripheral.DiscoverCharacteristics(new CBUUID[] { _probe.DeviceIdCharacteristic.UUID }, service);
}
}
}
else
{
throw new Exception("Error while discovering service: " + e.Error);
}
}
catch (Exception ex)
{
SensusServiceHelper.Get().Logger.Log("Exception while discovering characteristics: " + ex.Message, LoggingLevel.Normal, GetType());
DisconnectPeripheral(central, peripheral);
}
};
peripheral.DiscoveredCharacteristic += (sender, e) =>
{
try
{
if (e.Error == null)
{
// read device ID for newly discovered characteristics
foreach (CBCharacteristic characteristic in e.Service.Characteristics)
{
if (characteristic.UUID.Equals(_probe.DeviceIdCharacteristic.UUID))
{
peripheral.ReadValue(characteristic);
}
}
}
else
{
throw new Exception("Error while discovering characteristic: " + e.Error);
}
}
catch (Exception ex)
{
SensusServiceHelper.Get().Logger.Log("Exception while reading device ID value from peripheral: " + ex.Message, LoggingLevel.Normal, GetType());
DisconnectPeripheral(central, peripheral);
}
};
peripheral.UpdatedCharacterteristicValue += (sender, e) =>
{
try
{
if (e.Error == null)
{
// characteristic should have a non-null value
if (e.Characteristic.Value == null)
{
throw new Exception("Null updated value for characteristic.");
}
else
{
string encounteredDeviceId = Encoding.UTF8.GetString(e.Characteristic.Value.ToArray());
DeviceIdEncountered?.Invoke(this, new BluetoothDeviceProximityDatum(DateTime.UtcNow, encounteredDeviceId));
}
}
else
{
throw new Exception("Error while updating characteristic value: " + e.Error);
}
}
catch (Exception ex)
{
SensusServiceHelper.Get().Logger.Log("Exception while reporting encountered device ID: " + ex.Message, LoggingLevel.Normal, GetType());
}
finally
{
DisconnectPeripheral(central, peripheral);
}
};
try
{
central.ConnectPeripheral(peripheral);
}
catch (Exception ex)
{
SensusServiceHelper.Get().Logger.Log("Exception while connecting to peripheral: " + ex.Message, LoggingLevel.Normal, GetType());
}
}
// TODO: decide how to Interface this, right now it's only in the iOS implementation
public void DiscoverCharacteristics()
{
// TODO: need to raise the event and listen for it.
ParentDevice.DiscoverCharacteristics(NativeService);
}
public override void DiscoveredService (CBPeripheral peripheral, NSError error)
{
if (disposed) {
return;
}
foreach (var service in peripheral.Services) {
if (service.UUID == PeripheralUUID) {
peripheral.DiscoverCharacteristics (service);
}
}
}
public async Task <List <Tuple <string, DateTimeOffset> > > ReadPeripheralCharacteristicValuesAsync(CancellationToken cancellationToken)
{
List <Tuple <string, DateTimeOffset> > characteristicValueTimestamps = new List <Tuple <string, DateTimeOffset> >();
// copy list of peripherals to read. note that the same device may be reported more than once. read each once.
List <Tuple <CBPeripheral, CBCentralManager, DateTimeOffset> > peripheralCentralTimestamps;
lock (_peripheralCentralTimestamps)
{
peripheralCentralTimestamps = _peripheralCentralTimestamps.GroupBy(peripheralCentralTimestamp => peripheralCentralTimestamp.Item1.Identifier).Select(group => group.First()).ToList();
}
_probe.ReadAttemptCount += peripheralCentralTimestamps.Count;
// read characteristic from each peripheral
foreach (Tuple <CBPeripheral, CBCentralManager, DateTimeOffset> peripheralCentralTimestamp in peripheralCentralTimestamps)
{
if (cancellationToken.IsCancellationRequested)
{
break;
}
TaskCompletionSource <string> readCompletionSource = new TaskCompletionSource <string>();
CBPeripheral peripheral = peripheralCentralTimestamp.Item1;
CBCentralManager central = peripheralCentralTimestamp.Item2;
DateTimeOffset timestamp = peripheralCentralTimestamp.Item3;
#region discover services
peripheral.DiscoveredService += (sender, e) =>
{
try
{
if (e.Error == null)
{
SensusServiceHelper.Get().Logger.Log("Discovered services. Discovering characteristics...", LoggingLevel.Normal, GetType());
// discover characteristics for newly discovered services that match the one we're looking for
foreach (CBService service in peripheral.Services)
{
if (service.UUID.Equals(_service.UUID))
{
peripheral.DiscoverCharacteristics(new CBUUID[] { _characteristic.UUID }, service);
}
}
}
else
{
throw new Exception("Error while discovering services: " + e.Error);
}
}
catch (Exception ex)
{
SensusServiceHelper.Get().Logger.Log("Exception while discovering characteristics: " + ex.Message, LoggingLevel.Normal, GetType());
}
};
#endregion
#region discover characteristics
peripheral.DiscoveredCharacteristic += (sender, e) =>
{
try
{
if (e.Error == null)
{
SensusServiceHelper.Get().Logger.Log("Discovered characteristics. Reading value...", LoggingLevel.Normal, GetType());
// read characteristic value for newly discovered characteristics that match the one we're looking for
foreach (CBCharacteristic characteristic in e.Service.Characteristics)
{
if (characteristic.UUID.Equals(_characteristic.UUID))
{
peripheral.ReadValue(characteristic);
}
}
}
else
{
throw new Exception("Error while discovering characteristics: " + e.Error);
}
}
catch (Exception ex)
{
SensusServiceHelper.Get().Logger.Log("Exception while reading characteristic values from peripheral: " + ex.Message, LoggingLevel.Normal, GetType());
}
};
#endregion
#region update characteristic value
peripheral.UpdatedCharacterteristicValue += (sender, e) =>
{
try
{
if (e.Error == null)
{
// characteristic should have a non-null value
if (e.Characteristic.Value == null)
{
throw new Exception("Null updated value for characteristic.");
}
else
{
SensusServiceHelper.Get().Logger.Log("Value read.", LoggingLevel.Normal, GetType());
string characteristicValue = Encoding.UTF8.GetString(e.Characteristic.Value.ToArray());
readCompletionSource.SetResult(characteristicValue);
}
}
else
{
throw new Exception("Error while updating characteristic value: " + e.Error);
}
}
catch (Exception ex)
{
SensusServiceHelper.Get().Logger.Log("Exception while reporting characteristic value: " + ex.Message, LoggingLevel.Normal, GetType());
}
};
#endregion
try
{
SensusServiceHelper.Get().Logger.Log("Connecting to peripheral...", LoggingLevel.Normal, GetType());
central.ConnectPeripheral(peripheral);
string characteristicValue = await BluetoothDeviceProximityProbe.CompleteReadAsync(readCompletionSource, cancellationToken);
if (characteristicValue != null)
{
characteristicValueTimestamps.Add(new Tuple <string, DateTimeOffset>(characteristicValue, timestamp));
_probe.ReadSuccessCount++;
}
}
catch (Exception ex)
{
SensusServiceHelper.Get().Logger.Log("Exception while reading peripheral: " + ex, LoggingLevel.Normal, GetType());
}
finally
{
DisconnectPeripheral(central, peripheral);
}
}
return(characteristicValueTimestamps);
}
