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
28 package org.apache.http.impl.client;
29
30 import java.util.Collection;
31
32 import org.apache.http.HttpStatus;
33 import org.apache.http.annotation.Contract;
34 import org.apache.http.annotation.ThreadingBehavior;
35 import org.apache.http.auth.AUTH;
36 import org.apache.http.client.config.RequestConfig;
37
38 /**
39 * Default {@link org.apache.http.client.AuthenticationStrategy} implementation
40 * for proxy host authentication.
41 *
42 * @since 4.2
43 */
44 @Contract(threading = ThreadingBehavior.IMMUTABLE)
45 public class TargetAuthenticationStrategy extends AuthenticationStrategyImpl {
46
47 public static final TargetAuthenticationStrategytrategy.html#TargetAuthenticationStrategy">TargetAuthenticationStrategy INSTANCE = new TargetAuthenticationStrategy();
48
49 public TargetAuthenticationStrategy() {
50 super(HttpStatus.SC_UNAUTHORIZED, AUTH.WWW_AUTH);
51 }
52
53 @Override
54 Collection<String> getPreferredAuthSchemes(final RequestConfig config) {
55 return config.getTargetPreferredAuthSchemes();
56 }
57
58 }