func (rcv *UDP) Addr() net.Addr {
	if rcv.conn == nil {
		return nil
	}
	return rcv.conn.LocalAddr()
}
func (rcv *UDP) Addr() net.Addr {
	if rcv.conn == nil {
		return nil
	}
	return rcv.conn.LocalAddr()
}
func ( rcv * UDP ) Addr ( ) net . Addr { if rcv . conn == nil { return nil } return rcv . conn . LocalAddr ( ) }
// Addr returns binded socket address. For bind port 0 in tests
Addr returns binded socket address . For bind port 0 in tests