Cold Chain M stops receiving sensor logs after 4 days

[adamdewey]

Describe the bug

After 4 days of logging, Cold Chain M stops receiving logs from the BlueMaestro sensors.

To reproduce

To simulate a realistic environment for CCM, the screen was not left on and the app was logged into intermittently. However the tablet was on for the entire 4 days.

Steps to reproduce the behaviour:

1. Connect a sensor to CCM. Leave the default settings.
2. Log into CCM once a day so that sensor data is sent to the tablet
3. Notice that after 4 days the sensor data is no longer received.

*Note - 4 days is a rough estimate, your mileage may vary.

Expected behaviour

Sensor data to continue to be received ad infinitum.

Proposed Solution

Leave if you don't know how to fix/implement. Edit this issue description and explain here if you know the best path of implementing the fix within the codebase.

Version and device info

• App version: 8.3.0-rc1
• Tablet model: Lenovo TB-X505N
• OS version: Android 10

Additional context

This problem is not seen when using Cold Chain SA.

[adamdewey]

Another occurrence of this, this time after only 1.5 days:

Also note this is on Android 11, not Android 10:

App version: 8.4.1
Tablet model: Samsung Galaxy Tab A7 SM-T500
OS version: Android 11

[adamdewey]

A restart of the app fixed this, however

[adamdewey]

🤔 wondering if that last occurrence on Android 11 was due to trying to reproduce the back button N/A bug (which then prevents temp logs from being downloaded from the sensor to the tablet).

So that would potentially explain why an app restart fixed it?

[kat-ms]

Yeah, totally possible 🤔 . Do you happen to remember if an app restart fixed the original issue? I seem to recall it didn't, but am possible mis-remembering.

[adamdewey]

No, app restart doesn't fix it on Android 10..