HttpComponents Client Source Code Files

HttpComponents Client Source Code Files are provided in the source package file,

You can download as described in the previous tutorial and go to the "httpclient5/src" sub-folder to view Source Code files.

You can also browse HttpComponents Client Source Code below:



 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <>.
package org.apache.hc.client5.http.impl;



import org.apache.hc.client5.http.HttpRoute;
import org.apache.hc.client5.http.UserTokenHandler;
import org.apache.hc.client5.http.auth.AuthExchange;
import org.apache.hc.client5.http.auth.AuthScheme;
import org.apache.hc.client5.http.protocol.HttpClientContext;
import org.apache.hc.core5.annotation.Contract;
import org.apache.hc.core5.annotation.ThreadingBehavior;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.HttpRequest;
import org.apache.hc.core5.http.protocol.HttpContext;

 * Default implementation of {@link UserTokenHandler}. This class will use
 * an instance of {@link Principal} as a state object for HTTP connections,
 * if it can be obtained from the given execution context. This helps ensure
 * persistent connections created with a particular user identity within
 * a particular security context can be reused by the same user only.
 * <p>
 * DefaultUserTokenHandler will use the user principal of connection
 * based authentication schemes such as NTLM or that of the SSL session
 * with the client authentication turned on. If both are unavailable,
 * {@code null} token will be returned.
 * </p>
 * @since 4.0
@Contract(threading = ThreadingBehavior.STATELESS)
public class DefaultUserTokenHandler implements UserTokenHandler {

    public static final DefaultUserTokenHandler INSTANCE = new DefaultUserTokenHandler();

    public Object getUserToken(final HttpRoute route, final HttpContext context) {
        return getUserToken(route, null, context);

    public Object getUserToken(final HttpRoute route, final HttpRequest request, final HttpContext context) {

        final HttpClientContext clientContext = HttpClientContext.adapt(context);

        final HttpHost target = request != null ? new HttpHost(request.getScheme(), request.getAuthority()) : route.getTargetHost();

        final AuthExchange targetAuthExchange = clientContext.getAuthExchange(target);
        if (targetAuthExchange != null) {
            final Principal authPrincipal = getAuthPrincipal(targetAuthExchange);
            if (authPrincipal != null) {
                return authPrincipal;
        final HttpHost proxy = route.getProxyHost();
        if (proxy != null) {
            final AuthExchange proxyAuthExchange = clientContext.getAuthExchange(proxy);
            if (proxyAuthExchange != null) {
                final Principal authPrincipal = getAuthPrincipal(proxyAuthExchange);
                if (authPrincipal != null) {
                    return authPrincipal;
        final SSLSession sslSession = clientContext.getSSLSession();
        if (sslSession != null) {
            return sslSession.getLocalPrincipal();
        return null;

    private static Principal getAuthPrincipal(final AuthExchange authExchange) {
        final AuthScheme scheme = authExchange.getAuthScheme();
        if (scheme != null && scheme.isConnectionBased()) {
            return scheme.getPrincipal();
        return null;



Or download all them as a single archive file:

File name:
File size: 625318 bytes
Release date: 2022-11-10


Download and Install HttpComponents Core Binary Package

Download and Install HttpComponents Client Source Package

Download and Review Apache HttpComponents-*.jar

⇑⇑ FAQ for Apache HttpComponents JAR Library

2023-03-26, 9748👍, 1💬