How to check msTimeout

[kore44110]

I need to check if timeout over more than 5000ms
some case when wifi/internet connection is already connected but wifi/internet isn't running
how can I check these case?

I try to check
var reachable = await connectivity.IsRemoteReachable("google.com", 80, 5000);
if(reachable){
// in these case if device can ping to google.com
// it returns true quickly it's not waiting for 5000 ms
// I need to delay 5000ms before return result status
}else{
// in these case if device can ping to google.com
// it returns false quickly it's not waiting for 5000 ms
}

I'm using Xam.Plugin.Connectivity 3.0.3
Xamarin.Android
VS 2017