WiFi will not recover after lost then restored

[chadmbrown]

Issue reported here: https://forums.balena.io/t/balena-wifi-connect-issue/361651/10?u=brownster

Summary:

Initial setup works great. The hotspot works great and captive portal works great sending configuration and establishing a client mode connection while killing the hotpsot.

Test sequence:

Kill the WiFi
Hotspot starts as it should
Bring WiFi back
Device will not reconnect to WiFi. Hotspot stays active
A manual restart will fix the issue an reconnect to Wifi

Interesting: if you try to connect to the hotspot (prior to rebooting) the captive portal will list any available WiFi networks except for the original one it was connected to.

[jamesharrow]

Would be great to have this feature. We've used this example before and had issues in our fleet where an intermittent connection forced it into Hotspot mode. The WiFi automatically recovered, but WIFI Connect stopped it from getting back to the internet. It required asking someone locally to use their phone to re-enter the WiFi SSID/Password...