func NewDiscoverer(id string, addresses []string) (*Discoverer, error) {
disc := &Discoverer{
myID: id,
listenAddrs: addresses,
localBcastIntv: 30 * time.Second,
globalBcastIntv: 1800 * time.Second,
beacon: mc.NewBeacon("239.21.0.25", 21025),
registry: make(map[string][]string),
}
go disc.recvAnnouncements()
return disc, nil
}
func main() {
b := mc.NewBeacon("239.21.0.25", 21025)
go func() {
for {
bs, addr := b.Recv()
log.Printf("Received %d bytes from %s: %x %x", len(bs), addr, bs[:8], bs[8:])
}
}()
go func() {
bs := [16]byte{}
binary.BigEndian.PutUint64(bs[:], uint64(time.Now().UnixNano()))
log.Printf("My ID: %x", bs[:8])
for {
binary.BigEndian.PutUint64(bs[8:], uint64(time.Now().UnixNano()))
b.Send(bs[:])
log.Printf("Sent %d bytes", len(bs[:]))
time.Sleep(10 * time.Second)
}
}()
select {}
}