useSniffing := !hasPrefix && index != -1
	return listenerPort, useSniffing, err
}

// TODO: merge with IstioEgressListenerWrapper.selectVirtualServices
// selectVirtualServices selects the virtual services by matching given services' host names.
func selectVirtualServices(virtualServices []config.Config, servicesByName map[host.Name]*model.Service) []config.Config {
	out := make([]config.Config, 0)

	"istio.io/istio/pkg/maps"
	"istio.io/istio/pkg/util/protomarshal"
	"istio.io/istio/pkg/util/sets"
)

// SelectVirtualServices selects the virtual services by matching given services' host names.
// This function is used by sidecar converter.
func SelectVirtualServices(vsidx virtualServiceIndex, configNamespace string, hostsByNamespace map[string]hostClassification) []config.Config {

		}

		// allHosts contains the exact hosts and wildcard hosts,
		// since SelectVirtualServices will use `Matches` semantic matching.
		hc := hostsByNamespace[ns]
		hc.allHosts = append(hc.allHosts, hName)
		hostsByNamespace[ns] = hc
	}

	out.virtualServices = SelectVirtualServices(ps.virtualServiceIndex, configNamespace, hostsByNamespace)
	svces := ps.servicesExportedToNamespace(configNamespace)