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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
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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
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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
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26   */
27  package org.apache.http.impl.client.cache;
28  
29  import org.apache.http.impl.execchain.ClientExecChain;
30  
31  /**
32   * We are a conditionally-compliant HTTP/1.1 client with a cache. However, a lot of the rules for
33   * proxies apply to us, as far as proper operation of the requests that pass through us. Generally
34   * speaking, we want to make sure that any response returned from our HttpClient.execute() methods
35   * is conditionally compliant with the rules for an HTTP/1.1 server, and that any requests we pass
36   * downstream to the backend HttpClient are are conditionally compliant with the rules for an
37   * HTTP/1.1 client.
38   * <p/>
39   * There are some cases where strictly behaving as a compliant caching proxy would result in strange
40   * behavior, since we're attached as part of a client and are expected to be a drop-in replacement.
41   * The test cases captured here document the places where we differ from the HTTP RFC.
42   */
43  public class TestAsyncProtocolDeviations extends TestProtocolDeviations {
44  
45      @Override
46      protected ClientExecChain createCachingExecChain(
47              final ClientExecChain backend,
48              final HttpCache cache,
49              final CacheConfig config) {
50          return new CachingHttpAsyncClientExecChain(backend, cache, config);
51      }
52  }