Handle network change

[SiMet]

I've added code you provided.
I started my app on 192.168.43.57, then switched to 192.168.1.37.

When I switch to network I didn't start your AddServer method is not called.
When I back to this network I see your logs.

SubnetListChanged and line which begins with -> are in my SubnetListChanged listener.

Code:

SubnetListChanged
-> en0 192.168.1.37 (en0)
SubnetListChanged
-> lo0 127.0.0.1 (lo0)
> Started server on 192.168.43.57 (en0), port=54685
SubnetListChanged
-> en0 192.168.43.57 (en0)
(...)
SubnetListChanged
-> en0 192.168.1.37 (en0)