Frequent crashes

[mgranberry]

I don't know if it is a quirk with my setup, but I have been experiencing almost constant crashes by the watch app. Upon reviewing log entries, it appeared to be crashing after waves of 5 or more rapid attempts to resend a message to the JavaScript portion of the app. After changing APPSYNCANDMSG_RETRIES_MAX to 0, the crashes have gone away and my watch's battery life is much improved, probably because the bluetooth interface has a chance to shut down when the phone is busy and waiting on the JavaScript engine to start up.

---

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

[jasoncalabrese]

Those bursts of requests seem to be related the phone taking too long to respond, probably because of something else running. Would be interesting to see what effect this has when there are network interruptions.

[krystophv]

I noticed that the default behavior of the watch app is to immediately retry sending the message on an app_sync error. I also noticed that (for me, anyway) the chances of a successive app_sync error once one has happened are almost 100%, so it ends up sending APPSYNCANDMSG_RETRIES_MAX messages to the phone, which in turn will queue up that many XMLHttpRequests to the nightscout endpoint. Eventually, the majority of these will return, but it's like hitting the refresh button on the server 50 times as fast as you can and then sending all that data to the watch over and over again. I set mine to try a couple of times at 10 second intervals and then just wait till the next minute tick to try after that.

[ELUTE]

Usually this is a problem if your phone is low on resources. Try closing open applications and freeing space on the phone

[dustin-lennon]

Where is APPSYNCANDMSG_RETRIES_MAX set at?

[ELUTE]

// App Sync / Message retries, for timeout / busy problems
// Change to see if there is a temp or long term problem
// This is approximately number of seconds, so if set to 50, timeout is at 50 seconds
// However, this can vary widely - can be up to 6 seconds .... for 50, timeout can be up to 3 minutes
static const uint8_t APPSYNCANDMSG_RETRIES_MAX = 50;