1. Intro to Bluetooth Background Communication
Kiran Pathakota

2. Background triggers at your disposal
BluetoothLEAdvertisement(Watcher/Publisher)Trigger
Short running – used for detecting beacons
DeviceConnectionChangeTrigger
Short running – used for detecting connection changes
GattCharacteristicNotificationTrigger
Short running – used for responding to changes in characteristic values

3. Background triggers at your disposal
BluetoothLEAdvertisement(Watcher/Publisher)Trigger
Short running – used for detecting beacons
DeviceConnectionChangeTrigger
Short running – used for detecting connection changes
GattCharacteristicNotificationTrigger
Short running – used for responding to changes in characteristic values
DeviceUseTrigger
Long running – used for long term communication with a Device (eg. heart rate sensor)
RfcommConnectionTrigger
Long running – used for getting a handle to the socket when connected in the background

4. Background triggers at your disposal
BluetoothLEAdvertisement(Watcher/Publisher)Trigger
Short running – used for detecting beacons
DeviceConnectionChangeTrigger
Short running – used for detecting connection changes
GattCharacteristicNotificationTrigger
Short running – used for responding to changes in characteristic values
DeviceUseTrigger
Long running – used for long term communication with a Device (eg. heart rate sensor)
RfcommConnectionTrigger
Long running – used for getting a handle to the socket when connected in the background

5. Communicate – without pairing
RFCOMM (BT Classic)
GATT (BT LE) – Insider preview coming later this year

6. Rfcomm – Background Sockets
App
BGTask
socket
System
Client
Register()
Incoming BT connection
Run() invoked
triggerDetails.Socket
AppService/LocalStorage
RFCOMM Protocol

7. Outline Server: Background task registration
Server: Implement background task
Client: Query for remote devices and connect

8. Outline Server: Background task registration
Server: Implement background task
Client: Query for remote devices and connect

9. Outline Server: Background task registration
Server: Implement background task
Client: Query for remote devices and connect

10. Demo: Rfcomm Chat

11. Call to Action Bluetooth landing page on MSDN http://aka.ms/btdevdocs
Re-visit Build on Channel 9
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