Web service times out with default setting for "suspend execution for cached apps" (developer option, separate to power settings).

[tom-a-horrocks]

I have discovered (troubleshooting here) that requests to the xDrip Web Service will time out if xDrip+ hasn't been in the foreground recently. I have disabled battery optimisations for Dexcom app, Xdrip+ app, system bluetooth app, and have also disabled adaptive battery. I've only been able to reproduce this problem on a Pixel 7 (Android 14); the web service worked fine on a Cubot KingKong Mini 3 (Android 12).

Steps to reproduce

1. Leave xDrip+ in the background for up to 2 hours.
2. Visit the test link (http://127.0.0.1:17580/sgv.json?count=12) and observe it never loads.
3. Open xDrip+ into the foreground.
4. Visit the test link again, and observe it does load this time.

Configuration

• Phone: Pixel 7
• Android 14
• xDrip+: 1d84ed1-2023.12.23, but also a problem with earlier versions.

UPDATE
It turns out Pixel 7 suspends the execution of cached (background) apps, which was preventing the web service from responding. This can be disabled globally by changing the developer option below. Maybe there's a way to fix this in the app that doesn't require changing a global setting?

Settings -> System -> Developer options -> Suspend execution for cached apps -> "Disabled" (previously: "Device default")

That mostly fixed the problem, but it was still a little flakey. I found that resetting my launcher helped with this... maybe the Android 13 to 14 update was not totally clean. To reset the launcher, do the following. Warning: this resets your homescreen apps and widgets to factory, so you'll have to make all your shortcuts etc again.

Settings -> Apps -> See all Apps -> <Three dot menu -> Show system> -> Pixel Launcher -> Storage and cache -> Clear storage

[damien640]

OMG I was looking for a solution to this problem for one year... thank you SO MUCH!!!

[tom-a-horrocks]

Glad it helped you too!

[jamorham]

Which collector are you using? @tom-a-horrocks

[tom-a-horrocks]

@jamorham 640G / EverSense (reading from the Build Your Own Dexcom App).

[damien640]

Same for me.