Function route_source_address
pub fn route_source_address(destination: SocketAddr) -> Option<IpAddr>Available on crate feature
net only.Expand description
The address the OS would send from to reach destination, without
sending anything: connecting a UDP socket only sets the peer.
This answers what routing would choose, where local_addresses answers
what exists. None when no route is available, or when the socket
reports an unspecified address.