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1   /*
2    * ====================================================================
3    *
4    *  Licensed to the Apache Software Foundation (ASF) under one or more
5    *  contributor license agreements.  See the NOTICE file distributed with
6    *  this work for additional information regarding copyright ownership.
7    *  The ASF licenses this file to You under the Apache License, Version 2.0
8    *  (the "License"); you may not use this file except in compliance with
9    *  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, software
14   *  distributed under the License is distributed on an "AS IS" BASIS,
15   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   *  See the License for the specific language governing permissions and
17   *  limitations under the License.
18   * ====================================================================
19   *
20   * This software consists of voluntary contributions made by many
21   * individuals on behalf of the Apache Software Foundation.  For more
22   * information on the Apache Software Foundation, please see
23   * <http://www.apache.org/>.
24   *
25   */
26  
27  package org.apache.http.client;
28  
29  import org.apache.http.HttpHost;
30  import org.apache.http.auth.AuthScheme;
31  
32  /**
33   * Abstract {@link AuthScheme} cache. Initialized {@link AuthScheme} objects
34   * from this cache can be used to preemptively authenticate against known
35   * hosts.
36   *
37   * @since 4.1
38   */
39  public interface AuthCache {
40  
41      void put(HttpHost host, AuthScheme authScheme);
42  
43      AuthScheme get(HttpHost host);
44  
45      void remove(HttpHost host);
46  
47      void clear();
48  
49  }