1   /* HttpRecorderPostMethod
2    *
3    * Created on Feb 24, 2004
4    *
5    * Copyright (C) 2003 Internet Archive.
6    *
7    * This file is part of the Heritrix web crawler (crawler.archive.org).
8    *
9    * Heritrix is free software; you can redistribute it and/or modify
10   * it under the terms of the GNU Lesser Public License as published by
11   * the Free Software Foundation; either version 2.1 of the License, or
12   * any later version.
13   *
14   * Heritrix is distributed in the hope that it will be useful,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17   * GNU Lesser Public License for more details.
18   *
19   * You should have received a copy of the GNU Lesser Public License
20   * along with Heritrix; if not, write to the Free Software
21   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
22   */
23  package org.archive.httpclient;
24  
25  import java.io.IOException;
26  
27  import org.apache.commons.httpclient.HttpConnection;
28  import org.apache.commons.httpclient.HttpException;
29  import org.apache.commons.httpclient.HttpState;
30  import org.apache.commons.httpclient.methods.PostMethod;
31  import org.archive.util.HttpRecorder;
32  
33  
34  /***
35   * Override of PostMethod that marks the passed HttpRecorder w/ the transition
36   * from HTTP head to body and that forces a close on the responseConnection.
37   *
38   * This is a copy of {@link HttpRecorderGetMethod}.  Only difference is the
39   * parent subclass.
40   *
41   * @author stack
42   * @version $Date: 2005-04-07 21:44:47 +0000 (Thu, 07 Apr 2005) $ $Revision: 3351 $
43   */
44  public class HttpRecorderPostMethod extends PostMethod {
45      /***
46       * Instance of http recorder method.
47       */
48      protected HttpRecorderMethod httpRecorderMethod = null;
49      
50  
51      public HttpRecorderPostMethod(String uri, HttpRecorder recorder) {
52          super(uri);
53          this.httpRecorderMethod = new HttpRecorderMethod(recorder);
54      }
55  
56      protected void readResponseBody(HttpState state, HttpConnection connection)
57              throws IOException, HttpException {
58          // We're about to read the body.  Mark transition in http recorder.
59          this.httpRecorderMethod.markContentBegin(connection);
60          super.readResponseBody(state, connection);
61      }
62  
63      protected boolean shouldCloseConnection(HttpConnection conn) {
64          // Always close connection after each request. As best I can tell, this
65          // is superfluous -- we've set our client to be HTTP/1.0.  Doing this
66          // out of paranoia.
67          return true;
68      }
69  
70      public int execute(HttpState state, HttpConnection conn)
71              throws HttpException, IOException {
72          // Save off the connection so we can close it on our way out in case
73          // httpclient fails to (We're not supposed to have access to the
74          // underlying connection object; am only violating contract because
75          // see cases where httpclient is skipping out w/o cleaning up
76          // after itself).
77          this.httpRecorderMethod.setConnection(conn);
78          return super.execute(state, conn);
79      }
80      
81      protected void addProxyConnectionHeader(HttpState state, HttpConnection conn)
82              throws IOException, HttpException {
83          super.addProxyConnectionHeader(state, conn);
84          this.httpRecorderMethod.handleAddProxyConnectionHeader(this);
85      }
86  }