Bug: WireGuard stability issues

[samsapti]

Bug report

Describe your environment

• Device: OnePlus 8T
• OS name and version: LineageOS for microG 18.1 (April 4, 2022, latest release as of today)
• IVPN app version: 2.8.2 (F-Droid release)

Describe the problem

I am experiencing connection stability issues with WireGuard. Sometimes when around 24 hours have passed since I last reconnected, the connection silently stops working. Visibly it seems it's still connected, but I can't connect to the internet. Sometimes a simple reconnect solves the issue, and sometimes I have to manually regenerate my WG keys for it to work again. OpenVPN has no issues. I have my key rotation set to once a day.

This was not an issue with the previous F-Droid release.

Steps to reproduce:

1. Connect via WireGuard
2. Wait around 24 hours
3. Observe internet connectivity issues

Observed Results:

Connection silently drops after around 24 hours and needs either reconnect or WG key regeneration to work again.

Expected Results:

Device stays connected without issues.

Relevant Code:

package main

import "fmt"

func main() {
    fmt.Println("No relevant code")
}