func (info NodeInfo) String() string {
	if len(info.Hostname) != 0 {
		return info.Hostname
	}
	return httpBroadcastAddress(info)
}
func (info NodeInfo) String() string {
	if len(info.Hostname) != 0 {
		return info.Hostname
	}
	return httpBroadcastAddress(info)
}
// String returns a human-readable representation of the node info.