diff --git a/massrdns b/massrdns
Binary files differ.
diff --git a/massrdns.go b/massrdns.go
@@ -17,6 +17,7 @@ import (
var dnsServers []string
var failureCounts = make(map[string]int)
var showErrors bool
+var inProgressIPs sync.Map
func loadDNSServersFromFile(filePath string) ([]string, error) {
var servers []string
@@ -145,6 +146,12 @@ func worker(cidr *net.IPNet, resultsChan chan string) {
break
}
+ _, alreadyProcessing := inProgressIPs.LoadOrStore(ip.String(), true)
+ if alreadyProcessing {
+ continue
+ }
+ defer inProgressIPs.Delete(ip.String())
+
triedServers := make(map[string]bool)
retries := 10
success := false
@@ -216,14 +223,14 @@ func main() {
rand.Seed(time.Now().UnixNano())
- subnets, err := splitCIDR(cidr, concurrency*10) // Create more subnets than workers
+ subnets, err := splitCIDR(cidr, concurrency*10)
if err != nil {
fmt.Printf("Error splitting CIDR: %s\n", err)
os.Exit(1)
}
if len(subnets) < concurrency {
- concurrency = len(subnets) // Limit concurrency to number of subnets
+ concurrency = len(subnets)
}
cidrChan := make(chan *net.IPNet, len(subnets))
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