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Java > Open Source Codes > org > archive > httpclient > SingleHttpConnectionManager


1 /* SingleHttpConnectionManager
2 *
3 * $Id: SingleHttpConnectionManager.java,v 1.8 2005/10/10 09:31:18 gojomo Exp $
4 *
5 * Created on Mar 8, 2004
6 *
7 * Copyright (C) 2004 Internet Archive.
8 *
9 * This file is part of the Heritrix web crawler (crawler.archive.org).
10 *
11 * Heritrix is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser Public License as published by
13 * the Free Software Foundation; either version 2.1 of the License, or
14 * any later version.
15 *
16 * Heritrix is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU Lesser Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser Public License
22 * along with Heritrix; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 */

25 package org.archive.httpclient;
26
27 import java.io.IOException JavaDoc;
28 import java.io.InputStream JavaDoc;
29
30 import org.apache.commons.httpclient.HostConfiguration;
31 import org.apache.commons.httpclient.HttpConnection;
32 import org.apache.commons.httpclient.SimpleHttpConnectionManager;
33
34 /**
35  * An HttpClient-compatible HttpConnection "manager" that actually
36  * just gives out a new connection each time -- skipping the overhead
37  * of connection management, since we already throttle our crawler
38  * with external mechanisms.
39  *
40  * @author gojomo
41  */

42 public class SingleHttpConnectionManager extends SimpleHttpConnectionManager {
43
44     public SingleHttpConnectionManager() {
45         super();
46     }
47
48     public HttpConnection getConnectionWithTimeout(
49         HostConfiguration hostConfiguration, long timeout) {
50
51         HttpConnection conn = new HttpConnection(hostConfiguration);
52         conn.setHttpConnectionManager(this);
53         conn.getParams().setDefaults(this.getParams());
54         return conn;
55     }
56
57     public void releaseConnection(HttpConnection conn) {
58         // ensure connection is closed
59
conn.close();
60         finishLast(conn);
61     }
62
63     static void finishLast(HttpConnection conn) {
64         // copied from superclass because it wasn't made available to subclasses
65
InputStream JavaDoc lastResponse = conn.getLastResponseInputStream();
66         if (lastResponse != null) {
67             conn.setLastResponseInputStream(null);
68             try {
69                 lastResponse.close();
70             } catch (IOException JavaDoc ioe) {
71                 //FIXME: badness - close to force reconnect.
72
conn.close();
73             }
74         }
75     }
76 }
77
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