The environment variable `GODEBUG`
can hold a comma-separated list of these settings.
For example, if a Go program is running in an environment that contains

	GODEBUG=http2client=0,http2server=0

then that Go program will disable the use of HTTP/2 by default in both
the HTTP client and the HTTP server.
It is also possible to set the default `GODEBUG` for a given program
(discussed below).

		package due to a non-default GODEBUG=gotypesalias=... setting.

	/godebug/non-default-behavior/http2client:events
		The number of non-default behaviors executed by the net/http
		package due to a non-default GODEBUG=http2client=... setting.

	/godebug/non-default-behavior/http2server:events
		The number of non-default behaviors executed by the net/http
		package due to a non-default GODEBUG=http2server=... setting.

                }
            }
        }

        httpClient = closeableHttpClient;
    }

    @PreDestroy
    public void destroy() {
        if (httpClient != null) {
            try {
                httpClient.close();
            } catch (final IOException e) {
                logger.error("Failed to close httpClient.", e);
            }
        }
    }

    @Override

    public void close() {
        if (httpClient == null) {
            return;
        }
        if (logger.isDebugEnabled()) {
            logger.debug("Closing HcHttpClient...");
        }
        if (connectionMonitorTask != null) {
            connectionMonitorTask.cancel();
        }
        if (httpClient != null) {
            try {
                httpClient.close();

		}
		scopeInfos = append(scopeInfos, si)
	}
	return scopeInfos, nil
}

type ControlzClient struct {
	baseURL    *url.URL
	httpClient *http.Client
}

func (c *ControlzClient) GetScopes() ([]*ScopeInfo, error) {
	var scopeInfos []*ScopeInfo
	resp, err := c.httpClient.Get(c.baseURL.String())
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {

func RetrieveSpiffeBundleRootCerts(config map[string]string, caCertPool *x509.CertPool, retryTimeout time.Duration) (
	map[string][]*x509.Certificate, error,
) {
	httpClient := &http.Client{
		Timeout: time.Second * 10,
	}

	ret := map[string][]*x509.Certificate{}
	for trustDomain, endpoint := range config {
		if !strings.HasPrefix(endpoint, "https://") {

        container = new StandardCrawlerContainer();
        container.<HcHttpClient> prototype("internalHttpClient", HcHttpClient.class, client -> {
            client.setCookieSpec(CookieSpecs.BEST_MATCH);
        }).prototype("httpClient", FaultTolerantClient.class, client -> {
            client.setCrawlerClient(container.getComponent("internalHttpClient"));
            client.setMaxRetryCount(5);
            client.setRetryInterval(500);

			<artifactId>httpclient</artifactId>
			<version>${httpcomponents.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpmime</artifactId>
			<version>${httpcomponents.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient-cache</artifactId>

	MaxErrResponseSize int64

	// Avoid metrics update if set to true
	NoMetrics bool

	// TraceOutput will print debug information on non-200 calls if set.
	TraceOutput io.Writer // Debug trace output

	httpClient   *http.Client
	url          *url.URL
	newAuthToken func(audience string) string

	sync.RWMutex // mutex for lastErr
	lastErr      error
	lastErrTime  time.Time
}

type restError string

	serverURL := &url.URL{
		Scheme: endpoint.Scheme,
		Host:   endpoint.Host,
		Path:   pathJoin(healthCheckPathPrefix, healthCheckLivenessPath),
	}

	httpClient := &http.Client{
		Transport: globalInternodeTransport,
	}

	ctx, cancel := context.WithTimeout(GlobalContext, timeout)
	defer cancel()