func GetHost() string {
fmt.Println("Searching for hosts...")
ch := make(chan *mdns.ServiceEntry, 8)
mdns.Lookup("_gosync._tcp", ch)
close(ch)
if len(ch) == 0 {
log.Fatalln("No hosts available, specify manually or try again")
}
entries := make([]mdns.ServiceEntry, len(ch))
i := 1
for entry := range ch {
addr := GetAddr(entry)
fmt.Printf("[%d] << %s >> %s:%d\n", i, entry.Host, addr, entry.Port)
entries[i-1] = *entry
i++
}
i = 0
first := true
for i < 1 || i > len(entries) {
if !first {
fmt.Println("Invalid, try again")
}
first = false
fmt.Printf("Selection: ")
fmt.Scanf("%d", &i)
}
fmt.Println()
return fmt.Sprintf("%s:%d", GetAddr(&entries[i-1]), entries[i-1].Port)
}
// poll is invoked periodically to check for new hosts
func (m *AgentMDNS) poll(hosts chan *mdns.ServiceEntry) {
if err := mdns.Lookup(mdnsName(m.discover), hosts); err != nil {
m.logger.Printf("[ERR] agent.mdns: Failed to poll for new hosts: %v", err)
}
}