match := &listener.FilterChainMatch{}
	match.ApplicationProtocols = opt.ApplicationProtocols
	match.TransportProtocol = opt.TransportProtocol
	if cc.port.TargetPort > 0 {
		match.DestinationPort = &wrappers.UInt32Value{Value: cc.port.TargetPort}
	}
	return match
}

func (lb *ListenerBuilder) buildInboundHBONEListeners() []*listener.Listener {
	routes := []*route.Route{{
		Match: &route.RouteMatch{

func (sim *Simulation) matchFilterChain(chains []*listener.FilterChain, defaultChain *listener.FilterChain,
	input Call, hasTLSInspector bool,
) (*listener.FilterChain, error) {
	chains = filter("DestinationPort", chains, func(fc *listener.FilterChainMatch) bool {
		return fc.GetDestinationPort() == nil
	}, func(fc *listener.FilterChainMatch) bool {
		return int(fc.GetDestinationPort().GetValue()) == input.Port
	})

	virtualListener := xdstest.ExtractListener(model.VirtualInboundListenerName, listeners)
	for _, fc := range virtualListener.FilterChains {
		if fc.FilterChainMatch.DestinationPort.GetValue() == 15021 {
			t.Fatalf("port 15021 should not be included in inbound listener")
		}
	}
}

func testInboundListenerConfigWithGrpc(t *testing.T, proxy *model.Proxy, services ...*model.Service) {

                                applicationProtocols:
                                  description: Applies only to sidecars.
                                  type: string
                                destinationPort:
                                  description: The destination_port value used by
                                    a filter chain's match condition.
                                  maximum: 4294967295

                                applicationProtocols:
                                  description: Applies only to sidecars.
                                  type: string
                                destinationPort:
                                  description: The destination_port value used by
                                    a filter chain's match condition.
                                  maximum: 4294967295