Function RecursiveNameservers

dnsutil.go:353–363

RecursiveNameservers are used to pre-check DNS propagation. It picks user-configured nameservers (custom) OR the defaults obtained from resolv.conf and defaultNameservers if none is configured and ensures that all server addresses have a port value. EXPERIMENTAL: This API was previously unexported,

(custom []string)

// EXPERIMENTAL: This API was previously unexported, and may be
// be unexported again in the future. Do not rely on it at this time.
func RecursiveNameservers(custom []string) []string {
	var servers []string
	if len(custom) == 0 {
		servers = systemOrDefaultNameservers(defaultResolvConf, defaultNameservers)
	} else {
		servers = make([]string, len(custom))
		copy(servers, custom)
	}
	populateNameserverPorts(servers)
	return servers
}

var defaultNameservers = []string{
	"8.8.8.8:53",