Merge pull request #83 from blinklabs-io/fix/query-root-domain

fix: special case for root domain query

Author: agaffney

internal/dns/dns.go

@@ -284,6 +284,11 @@ func findNameserversForDomain(
 	// Split record name into labels and lookup each domain and parent until we get a hit
 	queryLabels := dns.SplitDomainName(recordName)
 
+	// Special case for root domain
+	if queryLabels == nil {
+		queryLabels = append(queryLabels, "")
+	}
+
 	// Check on-chain domains first
 	for startLabelIdx := 0; startLabelIdx < len(queryLabels); startLabelIdx++ {
 		lookupDomainName := strings.Join(queryLabels[startLabelIdx:], ".")