Interrupt test when connectivity changed

[lorenzoPrimi]

When the connectivity state changed we should send an interrupt signal to the current running test.

[lorenzoPrimi]

iOS: we can use the current connectivity class.

Android: In andoid 7 they deprecated the BroadcastReceiver but using another JobScheduler is not a solution
https://stackoverflow.com/questions/48527171/detect-connectivity-change-in-android-7-and-above-when-app-is-killed-in-backgrou

in API 28 CONNECTIVITY_ACTION was deprecated as well
https://developer.android.com/reference/android/net/ConnectivityManager#CONNECTIVITY_ACTION

so I need to look into these two:
https://developer.android.com/reference/android/net/ConnectivityManager#registerNetworkCallback(android.net.NetworkRequest,%20android.app.PendingIntent)
https://developer.android.com/reference/android/net/ConnectivityManager#registerDefaultNetworkCallback(android.net.ConnectivityManager.NetworkCallback)

registerNetworkCallback() was added in API level 21 (Android 5.0, Lollipop). It allows you to listen for changes in networks which satisfy a certain transport type (WiFi, cellular, Bluetooth, ...) and capability (SMS, NOT_METERED, ...).

registerDefaultNetworkCallback() was added in API level 24 (Android 7.0, Nougat) and uses your callback when any network change occurs, regardless of transport type and capability.

https://stackoverflow.com/questions/53863034/difference-between-registerdefaultnetworkcallback-and-registernetworkcallback#:~:text=registerNetworkCallback()%20was%20added%20in,(Android%205.0%2C%20Lollipop).&text=registerDefaultNetworkCallback()%20was%20added%20in,of%20transport%20type%20and%20capability.

[lorenzoPrimi]

iOS started with improving the current interrupts : ooni/probe-ios#412