internal Task <bool> SendIndicationAsync(BluetoothGattServer server, BluetoothGattCharacteristic characteristic, string clientAddress)
{
TaskCompletionSource <bool> tcs = new TaskCompletionSource <bool>();
Interop.Bluetooth.BtGattServerNotificationSentCallback cb = (result, address, serverHandle, characteristicHandle, completed, userData) =>
{
_notificationSent?.Invoke(characteristic, new NotificationSentEventArg(server, address, result, completed));
if (completed)
{
tcs.SetResult(true);
}
};
int err = Interop.Bluetooth.BtGattServerNotify(characteristic.GetHandle(), cb, clientAddress, IntPtr.Zero);
GattUtil.ThrowForError(err, string.Format("Failed to send value changed indication for characteristic uuid {0}", characteristic.Uuid));
return(tcs.Task);
}
internal IEnumerable <BluetoothGattDescriptor> GetDescriptors(BluetoothGattCharacteristic characteristic)
{
List <BluetoothGattDescriptor> attribututeList = new List <BluetoothGattDescriptor>();
Interop.Bluetooth.BtGattForeachCallback cb = (total, index, attributeHandle, userData) =>
{
BluetoothGattAttributeHandle handle = new BluetoothGattAttributeHandle(attributeHandle, false);
BluetoothGattDescriptor descriptor = BluetoothGattDescriptorImpl.CreateBluetoothGattDescriptor(handle, "");
if (descriptor != null)
{
descriptor.SetParent(characteristic);
attribututeList.Add(descriptor);
}
return(true);
};
int err = Interop.Bluetooth.BtGattCharacteristicForeachDescriptors(characteristic.GetHandle(), cb, IntPtr.Zero);
GattUtil.Error(err, "Failed to get all descriptor");
return(attribututeList);
}
internal Task <bool> SendIndicationAsync(BluetoothGattServer server, BluetoothGattCharacteristic characteristic, string clientAddress)
{
TaskCompletionSource <bool> task = new TaskCompletionSource <bool>();
int requestId = 0;
lock (this)
{
requestId = _requestId++;
_sendIndicationTaskSource[requestId] = task;
}
int err = Interop.Bluetooth.BtGattServerNotify(characteristic.GetHandle(), _sendIndicationCallback, clientAddress, (IntPtr)requestId);
if (err.IsFailed())
{
GattUtil.Error(err, string.Format("Failed to send value changed indication for characteristic uuid {0}", characteristic.Uuid));
task.SetResult(false);
_sendIndicationTaskSource.Remove(requestId);
BluetoothErrorFactory.ThrowBluetoothException(err);
}
return(task.Task);
}
internal void AddCharacteristic(BluetoothGattCharacteristic characteristic)
{
int err = Interop.Bluetooth.BtGattServiceAddCharacteristic(_handle, characteristic.GetHandle());
GattUtil.ThrowForError(err, string.Format("Failed to add characteristic with UUID ({0})", characteristic.Uuid));
}
internal void SendNotification(BluetoothGattCharacteristic characteristic, string clientAddress)
{
int err = Interop.Bluetooth.BtGattServerNotify(characteristic.GetHandle(), null, clientAddress, IntPtr.Zero);
GattUtil.ThrowForError(err, string.Format("Failed to send value changed notification for characteristic uuid {0}", characteristic.Uuid));
}
/// <summary>
/// Writes the value of a given characteristic to the remote device asynchronously.
/// </summary>
/// <param name="characteristic">The characteristic to be written.</param>
/// <returns>true on success, false otherwise.</returns>
/// <exception cref="InvalidOperationException">Thrown when the BT/BTLE is not enabled
/// or when the remote device is disconnected or when the write attribute value fails.</exception>
/// <since_tizen> 3 </since_tizen>
public async Task <bool> WriteValueAsync(BluetoothGattCharacteristic characteristic)
{
return(await _impl.WriteValueAsyncTask(characteristic.GetHandle()));
}
