if (li.Class == istionetworking.ListenerClassUndefined && li.Port == 0) || len(ts) == 0 {
		return true
	}

	for _, match := range ts {
		if matchMode(match.Mode, li.Class) && matchPorts(match.Ports, li.Port) {
			return true
		}
	}
	return false
}

func matchMode(workloadMode typeapi.WorkloadMode, class istionetworking.ListenerClass) bool {
	switch workloadMode {

	// nil if this is for the default sidecar scope.
	IstioListener *networking.IstioEgressListener

	// Specifies whether matching ports is required.
	matchPort bool

	// List of services imported by this egress listener above.
	// This will be used by LDS and RDS code when
	// building the set of virtual hosts or the tcp filterchain matches for

	// check the URI overlapping match, such as vB.Prefix is '/debugs' and vA.Prefix is '/debug'
	if strings.HasPrefix(vB.Prefix, vA.Prefix) {
		// check the port field
		if vB.MatchPort != vA.MatchPort {
			return false
		}

		// check the match method
		if vA.MatchMethod != vB.MatchMethod {
			if !strings.HasPrefix(vA.MatchMethod, vB.MatchMethod) {
				return false
			}
		}