I self host a wireguard VPN at my home. I use the official wireguard app to connect on my android.
Is there a way to be notified if my phone can’t complete a handshake in 10 minutes or something?
I thought of using uptime kuma to send me a telegram notification if I disappear, but in the case of a power outrage or internet outtage (only at home) then this would be useless.
Is there anything that can do this on my phone with minimal battery usage?
This isn’t selfhosted but you can use uptime robot. They can send regular http get requests or ping an IP or URL, the free tier can have like 10 monitors I think? I receive an email when an host isn’t available, in 5 minutes usually.