Function reachabilityForAddressPair

reachabilityForAddressPair(
localAddress: string,
remoteAddress: string,
): HSNetworkReachability | null
Creates a reachability monitor for a source/destination IP address pair. Returns null if either address is not a valid IPv4 or IPv6 address literal. Under the hood this monitors general system connectivity (the same as reachabilityInternet()), because NWPathMonitor does not support per-address targeting.
Parameters
- localAddress: string
  An IPv4 or IPv6 source address string.
- remoteAddress: string
  An IPv4 or IPv6 destination address string.
Returns HSNetworkReachability | null
A new HSNetworkReachability monitor, or null if either address is invalid.