FilterChainMatch: &listener.FilterChainMatch{},
			Name:             util.PassthroughFilterChain,
			Filters:          fallthroughNetworkFilters,
		}
	}
	return l
}

func (lb *ListenerBuilder) buildHTTPProxy(node *model.Proxy,
	push *model.PushContext,
) *listener.Listener {
	httpProxyPort := push.Mesh.ProxyHttpPort // global
	if node.Metadata.HTTPProxyPort != "" {
		port, err := strconv.Atoi(node.Metadata.HTTPProxyPort)