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PhilipsHue / flutter_reactive_ble

Flutter library that handles BLE operations for multiple devices.
https://developers.meethue.com/
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BLE IOS Running on Background Mode is unstable #854

Open sangtran1711 opened 5 months ago

sangtran1711 commented 5 months ago

Describe the bug My app try to read data from a thermometer device, the device advertises every 3, 6, 9 or 12 minutes based on device calculation and my app sometime didn't receive data for 1-2 hours or more.

To Reproduce Steps to reproduce the behavior: App run

  1. Connect to device using connectToDevice()
  2. Read from characteristic
  3. Disconnect
  4. Reconnect to device again.

Expected behavior My expectation is my app receive data from the device every 3, 6, 9 or 12 minutes at least.

Smartphone / tablet

Peripheral device

Additional context My app flow is Connect to the device -> read data -> disconnect -> wait 2 seconds -> reconnect to the device again. This will be forever until the user unregister the device from the app. The app will run 1 or several days smoothly as I expected and then it started not receiving data for 1-2 hours and then received data again. Don't know if it is an issue or a limitation of IOS.

Scottie-Fischer commented 3 months ago

This could be because IOS can suspend applications. Without a restoration key and option for restoration: CBCentralManager( delegate: centralManagerDelegate, queue: nil, options: [ CBCentralManagerOptionRestoreIdentifierKey: centralManagerRestoreID, CBCentralManagerOptionShowPowerAlertKey: true ] ) the app could remain suspended even if the bluetooth connection receives an update. Furthermore, if the app is suspended the connection could be severed while in the background. Honestly this restoration should be an added feature.

drolpi commented 1 month ago

@Taym95 are there any updates on this?