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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.nio.protocol;
29  
30  import java.io.IOException;
31  
32  import org.apache.http.HttpException;
33  import org.apache.http.nio.NHttpConnection;
34  
35  /**
36   * Event listener used by the HTTP protocol layer to report fatal exceptions
37   * and events that may need to be logged using a logging toolkit.
38   *
39   * @since 4.0
40   *
41   * @deprecated (4.2) do not use
42   */
43  @Deprecated
44  public interface EventListener {
45  
46      /**
47       * Triggered when an I/O error caused a connection to be terminated.
48       *
49       * @param ex the I/O exception.
50       * @param conn the connection.
51       */
52      void fatalIOException(IOException ex, NHttpConnection conn);
53  
54      /**
55       * Triggered when an HTTP protocol error caused a connection to be
56       * terminated.
57       *
58       * @param ex the protocol exception.
59       * @param conn the connection.
60       */
61      void fatalProtocolException(HttpException ex, NHttpConnection conn);
62  
63      /**
64       * Triggered when a new connection has been established.
65       *
66       * @param conn the connection.
67       */
68      void connectionOpen(NHttpConnection conn);
69  
70      /**
71       * Triggered when a connection has been terminated.
72       *
73       * @param conn the connection.
74       */
75      void connectionClosed(NHttpConnection conn);
76  
77      /**
78       * Triggered when a connection has timed out.
79       *
80       * @param conn the connection.
81       */
82      void connectionTimeout(NHttpConnection conn);
83  
84  }