Function hostIsIP

nats.go:2055–2057

Return true iff u.Hostname() is an IP address.

(u *url.URL)

// Return true iff u.Hostname() is an IP address.
func hostIsIP(u *url.URL) bool {
	return net.ParseIP(u.Hostname()) != nil
}

// parseServerURL parses a server URL string into a Server struct.
// It handles scheme defaults and port defaults. Does not validate websocket consistency.