Retrieve a reference to a “simple sender” actor of the UDP extension.
The newly created “simple sender” will reply with the akka.io.Udp.SimpleSenderReady notification.
The “simple sender” is a convenient service for being able to send datagrams
when the originating address is meaningless, i.e. when no reply is expected.
The “simple sender” will not stop itself, you will have to send it a akka.actor.PoisonPill
when you want to close the socket.