ping_server wrapper function randomly crashes.

[ewang2002]

It looks like something went wrong when trying to unwrap here. For now, changed to unwrap_or_default but I'm not sure if this will change anything.

Error logs also shows that there was a core dumped message, so that's interesting.

Leaving this up as a reminder.

[ewang2002]

This could potentially be related to the following:

• 2/12 ~04:27am: got signed out (needs 20 failed attempts to sign out, 3 seconds per failed attempt)
• 2/12 ~04:28am: program stopped (exited gracefully) due to not being able to get data.

Might be worth looking into, especially if we want to keep this up 24/7.

[ewang2002]

Looks like something happened around 2/13 ~4:08am which caused the program to stop working. The only thing that was interesting was that it was requesting courses just fine, then couldn't find anything for one course and decided to stop from there.

[ewang2002]

Upon further inspection (i.e. staying up until 4am), it looks like WebReg does some form of maintenance at around 04:06am (in the screenshot above, the program is unable to get courses). During this time period, WebReg is inaccessible (e.g. when trying to access WebReg via browser like you normally would, the browser will eventually time out due to the request taking too long to process). At around 4:14am, WebReg comes out of maintenance (e.g. you can access it normally).

[ewang2002]

For now, I'll close this issue.