final Method method = clazz.getMethod("shutdownAll", (Class<?>[]) null);
            method.invoke(null, (Object[]) null);
        } catch (final ClassNotFoundException e) {
            // ignore
        } catch (final Exception e) {
            logger.warn("Could not shutdown Commons HttpClient.", e);
        }
    }

        return isTimeoutException(rootCause) || isUnrecoverable5xxStatusCode(rootCause);
    }

    /**
     * See <a href="http://hc.apache.org/httpclient-3.x/exception-handling.html">HTTPClient exception handling</a> for more information.
     */
    private static boolean isTimeoutException(Throwable rootCause) {
        return rootCause instanceof InterruptedIOException;
    }

func request(method, requestURL string, t time.Duration, headers map[string]string) (*bytes.Buffer, error) {
	httpClient := &http.Client{
		Timeout: t,
	}

	req, err := http.NewRequest(method, requestURL, nil)
	if err != nil {
		return nil, err
	}
	for k, v := range headers {
		req.Header.Set(k, v)
	}

	response, err := httpClient.Do(req)
	if err != nil {
		return nil, err
	}
	defer response.Body.Close()

import assertk.assertions.isEqualTo
import assertk.assertions.isNull
import assertk.assertions.matches
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import org.eclipse.jetty.client.HttpClient
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test

/**
 * Jetty HTTP client.
 *

	if err != nil {
		return newError(bucket, err)
	}
	if err = c.addAuthHeader(req); err != nil {
		return newError(bucket, err)
	}

	resp, err := c.httpClient.Do(req)
	if err != nil {
		if derr := c.Delete(bucket); derr != nil {
			return newError(bucket, derr)
		}
		return err
	}
	defer xhttp.DrainBody(resp.Body)

	if resp.StatusCode != http.StatusOK {

plugins {
    `java-platform`
}

// tag::define-platform[]
dependencies {
    constraints {
        // Platform declares some versions of libraries used in subprojects
        api("commons-httpclient:commons-httpclient:3.1")
        api("org.apache.commons:commons-lang3:3.8.1")
    }
}

plugins {
    id 'java-platform'
}

// tag::define-platform[]
dependencies {
    constraints {
        // Platform declares some versions of libraries used in subprojects
        api 'commons-httpclient:commons-httpclient:3.1'
        api 'org.apache.commons:commons-lang3:3.8.1'
    }
}

 */
package org.codelibs.fess.es.client;

import static org.codelibs.core.stream.StreamUtil.split;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fesen.client.HttpClient;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.client.FesenClient;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;

			<artifactId>corelib</artifactId>
			<version>${corelib.version}</version>
		</dependency>
		<dependency>
			<groupId>org.codelibs.fesen.client</groupId>
			<artifactId>fesen-httpclient</artifactId>
			<version>${fesen.httpclient.version}</version>
		</dependency>
		<dependency>
			<groupId>org.lastaflute</groupId>
			<artifactId>lasta-di</artifactId>
			<version>${lasta.di.version}</version>
		</dependency>

    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();