func DefaultProxyConfig() *meshconfig.ProxyConfig {
	// TODO: include revision based on REVISION env
	// TODO: set default namespace based on POD_NAMESPACE env
	return &meshconfig.ProxyConfig{
		ConfigPath:               constants.ConfigPathDir,
		ClusterName:              &meshconfig.ProxyConfig_ServiceCluster{ServiceCluster: constants.ServiceClusterName},
		DrainDuration:            durationpb.New(45 * time.Second),

	// monitoring the certs and restart if the content of the certs changes.
	if len(a.proxyConfig.CustomConfigFile) > 0 {
		// there is a custom configuration. Don't write our own config - but keep watching the certs.
		a.envoyOpts.ConfigPath = a.proxyConfig.CustomConfigFile
		a.envoyOpts.ConfigCleanup = false
	} else {
		out, err := bootstrap.New(bootstrap.Config{
			Node:             node,
			CompliancePolicy: common_features.CompliancePolicy,

		return nil, err
	}
	cfg := &meshconfig.ProxyConfig{}

	err = prototext.Unmarshal(content, cfg)
	if err != nil {
		return nil, err
	}

	// Exported from makefile or env
	cfg.ConfigPath = filepath.Join(out, "/bootstrap/", base)
	cfg.CustomConfigFile = filepath.Join(env.IstioSrc, "/tools/packaging/common/envoy_bootstrap.json")
	if cfg.StatusPort == 0 {
		cfg.StatusPort = 15020
	}
	return cfg, nil

          protocol: TCP
          name: http-envoy-prom
        args:
        - proxy
        - sidecar
        - --domain
        - $(POD_NAMESPACE).svc.{{ .Values.global.proxy.clusterDomain }}
        - --configPath
        - "/etc/istio/proxy"
        - --binaryPath
        - "/usr/local/bin/envoy"
        - --serviceCluster
        {{ if ne "" (index .ObjectMeta.Labels "app") -}}

          protocol: TCP
          name: http-envoy-prom
        args:
        - proxy
        - sidecar
        - --domain
        - $(POD_NAMESPACE).svc.{{ .Values.global.proxy.clusterDomain }}
        - --configPath
        - "/etc/istio/proxy"
        - --binaryPath
        - "/usr/local/bin/envoy"
        - --serviceCluster
        {{ if ne "" (index .ObjectMeta.Labels "app") -}}

          protocol: TCP
          name: http-envoy-prom
        args:
        - proxy
        - sidecar
        - --domain
        - $(POD_NAMESPACE).svc.{{ .Values.global.proxy.clusterDomain }}
        - --configPath
        - "/etc/istio/proxy"
        - --binaryPath
        - "/usr/local/bin/envoy"
        - --serviceCluster
        {{ if ne "" (index .ObjectMeta.Labels "app") -}}

          protocol: TCP
          name: http-envoy-prom
        args:
        - proxy
        - sidecar
        - --domain
        - $(POD_NAMESPACE).svc.{{ .Values.global.proxy.clusterDomain }}
        - --configPath
        - "/etc/istio/proxy"
        - --binaryPath
        - "/usr/local/bin/envoy"
        - --serviceCluster
        {{ if ne "" (index .ObjectMeta.Labels "app") -}}

			opts = append(opts, option.ZipkinAddress(tracer.Zipkin.Address))
		case *meshAPI.Tracing_Lightstep_:
			isH2 = true
			// Write the token file.
			lightstepAccessTokenPath := lightstepAccessTokenFile(config.ConfigPath)
			//nolint: staticcheck  // Lightstep deprecated
			err := os.WriteFile(lightstepAccessTokenPath, []byte(tracer.Lightstep.AccessToken), 0o666)
			if err != nil {
				return nil, err
			}

		}
	}

	return
}

// ValidateMeshConfigProxyConfig checks that the mesh config is well-formed
func ValidateMeshConfigProxyConfig(config *meshconfig.ProxyConfig) (errs error) {
	if config.ConfigPath == "" {
		errs = multierror.Append(errs, errors.New("config path must be set"))
	}

	if config.BinaryPath == "" {
		errs = multierror.Append(errs, errors.New("binary path must be set"))
	}

		},
	}

	// Set-up envoy defaults
	resp.ProxyConfig.ProxyBootstrapTemplatePath = filepath.Join(env.IstioSrc, "./tools/packaging/common/envoy_bootstrap.json")
	resp.ProxyConfig.ConfigPath = d
	resp.ProxyConfig.BinaryPath = filepath.Join(env.LocalOut, "envoy")
	if path, exists := pkgenv.Register("ENVOY_PATH", "", "Specifies the path to an Envoy binary.").Lookup(); exists {
		resp.ProxyConfig.BinaryPath = path