1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27 package org.apache.hc.client5.http.examples;
28
29 import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
30 import org.apache.hc.client5.http.classic.methods.HttpGet;
31 import org.apache.hc.client5.http.impl.auth.BasicScheme;
32 import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
33 import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
34 import org.apache.hc.client5.http.impl.classic.HttpClients;
35 import org.apache.hc.client5.http.protocol.HttpClientContext;
36 import org.apache.hc.core5.http.HttpHost;
37 import org.apache.hc.core5.http.io.entity.EntityUtils;
38
39 /**
40 * An example of how HttpClient can be customized to authenticate
41 * preemptively using Basic scheme.
42 * <b/>
43 * Generally, preemptive authentication can be considered less
44 * secure than a response to an authentication challenge
45 * and therefore discouraged.
46 */
47 public class ClientPreemptiveBasicAuthentication {
48
49 public static void main(final String[] args) throws Exception {
50 try (final CloseableHttpClient httpclient = HttpClients.createDefault()) {
51
52 // Generate Basic scheme object and add it to the local auth cache
53 final BasicScheme basicAuth = new BasicScheme();
54 basicAuth.initPreemptive(new UsernamePasswordCredentials("user", "passwd".toCharArray()));
55
56 final HttpHost target = new HttpHost("http", "httpbin.org", 80);
57
58 // Add AuthCache to the execution context
59 final HttpClientContext localContext = HttpClientContext.create();
60 localContext.resetAuthExchange(target, basicAuth);
61
62 final HttpGet httpget = new HttpGet("http://httpbin.org/hidden-basic-auth/user/passwd");
63
64 System.out.println("Executing request " + httpget.getMethod() + " " + httpget.getUri());
65 for (int i = 0; i < 3; i++) {
66 try (final CloseableHttpResponse response = httpclient.execute(httpget, localContext)) {
67 System.out.println("----------------------------------------");
68 System.out.println(response.getCode() + " " + response.getReasonPhrase());
69 System.out.println(EntityUtils.toString(response.getEntity()));
70 }
71 }
72 }
73 }
74
75 }