var (
		addr string
		port int
	)
	opts = opts.DeepCopy()
	var addrs []string
	var ports []int
	if opts.Port.ServicePort == 0 {
		s, err := c.schemeFor(opts)
		if err != nil {
			return echo.CallResult{}, err
		}
		opts.Scheme = s

		// Default port based on protocol
		switch s {
		case scheme.HTTP:
			addrs, ports = c.HTTPAddresses()