Merge pull request #10 from JeremyRand/multiple-initial

Support multiple initial IP's

configs/bitcoin-test.json

@@ -6,6 +6,7 @@
  "Pver": 70001,
  "DNSName": "btctseed.zagbot.com",
  "TTL": 300,
+ "InitialIP": "0.0.0.0,0.0.0.0",
  "Seeder1": "testnet-seed.alexykot.me",
  "Seeder2": "testnet-seed.bitcoin.petertodd.org",
  "Seeder3": "testnet-seed.bluematt.me"

configs/bitcoin.json

@@ -6,6 +6,7 @@
  "Pver": 70001,
  "DNSName": "btcseed.zagbot.com",
  "TTL": 600,
+ "InitialIP": "0.0.0.0,0.0.0.0",
  "Seeder1": "dnsseed.bluematt.me",
  "Seeder2": "bitseed.xf2.org",
  "Seeder3": "dnsseed.bitcoin.dashjr.org"

configs/dnsseeder.json

@@ -6,6 +6,7 @@
  "Pver": 70001,
  "DNSName": "seeder.example.com",
  "TTL": 600,
+ "InitialIP": "0.0.0.0,0.0.0.0",
  "Seeder1": "seeder1.example.com",
  "Seeder2": "seed1.bob.com",
  "Seeder3": "seed2.example.com"

configs/namecoin.json

@@ -6,6 +6,7 @@
  "Pver": 70001,
  "DNSName": "dnsseed.nmctest.net",
  "TTL": 600,
+ "InitialIP": "0.0.0.0,0.0.0.0",
  "Seeder1": "nmc.seed.quisquis.de",
  "Seeder2": "seed.nmc.markasoftware.com"
 }

configs/twister.json

@@ -6,6 +6,7 @@
  "Pver": 60000,
  "DNSName": "dnsseed.zagbot.com",
  "TTL": 600,
+ "InitialIP": "0.0.0.0,0.0.0.0",
  "Seeder1": "seed2.twister.net.co",
  "Seeder2": "seed.twister.net.co",
  "Seeder3": "seed3.twister.net.co"

seeder.go

@@ -5,6 +5,7 @@ import (
 	"log"
 	"net"
 	"strconv"
+	"strings"
 	"sync"
 	"time"
 
@@ -105,15 +106,17 @@ func (s *dnsseeder) initSeeder() {
 		}
 	}
 
-	// load one ip address into system and start crawling from it
+	// load ip addresses into system and start crawling from them
 	if len(s.theList) == 0 && s.initialIP != "" {
-		if newIP := net.ParseIP(s.initialIP); newIP != nil {
+		for _, initialIP := range strings.Split(s.initialIP, ",") {
+			if newIP := net.ParseIP(initialIP); newIP != nil {
 				// 1 at the end is the services flag
 				if x := s.addNa(wire.NewNetAddressIPPort(newIP, s.port, 1)); x == true {
 					log.Printf("%s: crawling with initial IP %s \n", s.name, s.initialIP)
 				}
 			}
 		}
+	}
 
 	if len(s.theList) == 0 {
 		log.Printf("%s: Error: No ip addresses from seeders so I have nothing to crawl.\n", s.name)