* whois: use whois.arin.net

+ robust redirect mechanism
* decrease timeout 30sec -> 5sec
* faster response parsing
* don't use likexian/whois-go package

home/dns.go

@@ -61,7 +61,8 @@ func initDNSServer() {
 	config.dnsctx.rdns = InitRDNS(&config.clients)
 	config.dnsctx.whois = initWhois(&config.clients)
 
-	topClients := config.stats.GetTopData(30)
+	const topClientsNumber = 30 // the number of clients to get
+	topClients := config.stats.GetTopClientsIP(topClientsNumber)
 	for _, ip := range topClients {
 		ipAddr := net.ParseIP(ip)
 		if !ipAddr.IsLoopback() {