func createAllocator(router *mesh.Router, ipRangeStr string, defaultSubnetStr string, quorum uint, isKnownPeer func(mesh.PeerName) bool) (*ipam.Allocator, address.CIDR) {
ipRange := parseAndCheckCIDR(ipRangeStr)
defaultSubnet := ipRange
if defaultSubnetStr != "" {
defaultSubnet = parseAndCheckCIDR(defaultSubnetStr)
if !ipRange.Range().Overlaps(defaultSubnet.Range()) {
Log.Fatalf("IP address allocation default subnet %s does not overlap with allocation range %s", defaultSubnet, ipRange)
}
}
allocator := ipam.NewAllocator(router.Ourself.Peer.Name, router.Ourself.Peer.UID, router.Ourself.Peer.NickName, ipRange.Range(), quorum, isKnownPeer)
allocator.SetInterfaces(router.NewGossip("IPallocation", allocator))
allocator.Start()
return allocator, defaultSubnet
}
func createDNSServer(config dnsConfig, router *mesh.Router, isKnownPeer func(mesh.PeerName) bool) (*nameserver.Nameserver, *nameserver.DNSServer) {
ns := nameserver.New(router.Ourself.Peer.Name, config.Domain, isKnownPeer)
router.Peers.OnGC(func(peer *mesh.Peer) { ns.PeerGone(peer.Name) })
ns.SetGossip(router.NewGossip("nameserver", ns))
dnsserver, err := nameserver.NewDNSServer(ns, config.Domain, config.ListenAddress,
config.EffectiveListenAddress, uint32(config.TTL), config.ClientTimeout)
if err != nil {
Log.Fatal("Unable to start dns server: ", err)
}
listenAddr := config.ListenAddress
if config.EffectiveListenAddress != "" {
listenAddr = config.EffectiveListenAddress
}
Log.Println("Listening for DNS queries on", listenAddr)
return ns, dnsserver
}