Reloading page makes it blank after some secs

[yuya-oc]

From @S6066 at mattermost/mattermost#7242

Summary
Sometimes I have a DNS error, or a Network Changed one, and I have to reload (Ctrl + R) the page.
When doing that, after some seconds the page becomes blank one second and reload again

https://youtu.be/pyeaz3hp5b4

Steps to reproduce

• Operating System: Windows 10 x64
• Mattermost Desktop App version: 3.7.0
• Mattermost Server version: 4.1.0
• Clear steps to reproduce the issue
  1. Make a DNS error or a Network Changed one. (More concrete step is needed to reproduce the situation.)
  2. Reload the page with Ctrl+R.
  3. The page reloads again after some seconds.

Expected behavior
The reloading should happen only once.

Observed behavior
The page reloads twice.

Possible fixes
?

[yuya-oc]

@S6066 Please let me confirm. The application should automatically reload the page when the app has become online from offline. Do you need to press Ctrl+R when you meet DNS or Network Changed error?

[Apjue]

@yuya-oc I do not need to press Ctrl+R, but I don't like waiting so I usually press it.
Operating System: Windows 10 x64 (16xx, probably 1607)
To reproduce the issue, Exit mattermost if opened, disable wifi, start Mattermost, enable wifi, press Ctrl+R
Edit: When waiting instead of pressing Ctrl+R, the bug doesn't occur

[yuya-oc]

The problem reproduced for me on Windows 10. The error is ERR_NAME_NOT_RESOLVED (-105). When the error is ERR_INTERNET_DISCONNECTED (-106), the app properly reloads the page automatically.

The app automatically reloads the page every 30 seconds as another mechanism to repair the error. So I feel it's wrongly working when the page is manually reloaded.

[jasonblais]

The app automatically reloads the page every 30 seconds as another mechanism to repair the error.

@yuya-oc Do you mean the error clears after 30 seconds, or that it should clear but for some reason it doesn't.

[yuya-oc]

@jasonblais Yes, if the error is gone in that time, the user will see correct reloaded webapp. However I think the automatic reloading is not canceled when the page is manually reloaded. So the page reloads again after Ctrl+R is done.

[jasonblais]

Okay cool. Do you have an idea on how much work it is to fix? Wondering if we should fix it in 3.8

[yuya-oc]

It looks easy. I will test my fix tomorrow.