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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 org.apache.http.annotation.Immutable;
31  import org.apache.http.client.methods.HttpGet;
32  import org.apache.http.client.methods.HttpHead;
33  import org.apache.http.client.methods.HttpPost;
34  
35  /**
36   * Lax {@link org.apache.http.client.RedirectStrategy} implementation
37   * that automatically redirects all HEAD, GET and POST requests.
38   * This strategy relaxes restrictions on automatic redirection of
39   * POST methods imposed by the HTTP specification.
40   *
41   * @since 4.2
42   */
43  @Immutable
44  public class LaxRedirectStrategy extends DefaultRedirectStrategy {
45  
46      /**
47       * Redirectable methods.
48       */
49      private static final String[] REDIRECT_METHODS = new String[] {
50          HttpGet.METHOD_NAME,
51          HttpPost.METHOD_NAME,
52          HttpHead.METHOD_NAME
53      };
54  
55      @Override
56      protected boolean isRedirectable(final String method) {
57          for (final String m: REDIRECT_METHODS) {
58              if (m.equalsIgnoreCase(method)) {
59                  return true;
60              }
61          }
62          return false;
63      }
64  
65  }