1 /*
2  * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/impl/conn/DefaultResponseParser.java $
3  * $Revision: 617638 $
4  * $Date: 2008-02-01 12:49:26 -0800 (Fri, 01 Feb 2008) $
5  *
6  * ====================================================================
7  * Licensed to the Apache Software Foundation (ASF) under one
8  * or more contributor license agreements.  See the NOTICE file
9  * distributed with this work for additional information
10  * regarding copyright ownership.  The ASF licenses this file
11  * to you under the Apache License, Version 2.0 (the
12  * "License"); you may not use this file except in compliance
13  * with the License.  You may obtain a copy of the License at
14  *
15  *   http://www.apache.org/licenses/LICENSE-2.0
16  *
17  * Unless required by applicable law or agreed to in writing,
18  * software distributed under the License is distributed on an
19  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
20  * KIND, either express or implied.  See the License for the
21  * specific language governing permissions and limitations
22  * under the License.
23  * ====================================================================
24  *
25  * This software consists of voluntary contributions made by many
26  * individuals on behalf of the Apache Software Foundation.  For more
27  * information on the Apache Software Foundation, please see
28  * <http://www.apache.org/>.
29  *
30  */
31 
32 package org.apache.http.impl.conn;
33 
34 import java.io.IOException;
35 
36 import org.apache.http.HttpException;
37 import org.apache.http.HttpMessage;
38 import org.apache.http.HttpResponseFactory;
39 import org.apache.http.NoHttpResponseException;
40 import org.apache.http.ProtocolException;
41 import org.apache.http.StatusLine;
42 import org.apache.http.conn.params.ConnConnectionPNames;
43 import org.apache.http.impl.io.AbstractMessageParser;
44 import org.apache.http.io.SessionInputBuffer;
45 import org.apache.http.message.LineParser;
46 import org.apache.http.message.ParserCursor;
47 import org.apache.http.params.HttpParams;
48 import org.apache.http.util.CharArrayBuffer;
49 /**
50  * @deprecated Please use {@link java.net.URL#openConnection} instead.
51  *     Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a>
52  *     for further details.
53 */
54 
55 @Deprecated
56 public class DefaultResponseParser extends AbstractMessageParser {
57 
58     private final HttpResponseFactory responseFactory;
59     private final CharArrayBuffer lineBuf;
60     private final int maxGarbageLines;
61 
DefaultResponseParser( final SessionInputBuffer buffer, final LineParser parser, final HttpResponseFactory responseFactory, final HttpParams params)62     public DefaultResponseParser(
63             final SessionInputBuffer buffer,
64             final LineParser parser,
65             final HttpResponseFactory responseFactory,
66             final HttpParams params) {
67         super(buffer, parser, params);
68         if (responseFactory == null) {
69             throw new IllegalArgumentException
70                 ("Response factory may not be null");
71         }
72         this.responseFactory = responseFactory;
73         this.lineBuf = new CharArrayBuffer(128);
74         this.maxGarbageLines = params.getIntParameter(
75             ConnConnectionPNames.MAX_STATUS_LINE_GARBAGE, Integer.MAX_VALUE);
76     }
77 
78 
79     @Override
parseHead( final SessionInputBuffer sessionBuffer)80     protected HttpMessage parseHead(
81             final SessionInputBuffer sessionBuffer) throws IOException, HttpException {
82         // clear the buffer
83         this.lineBuf.clear();
84         //read out the HTTP status string
85         int count = 0;
86         ParserCursor cursor = null;
87         do {
88             int i = sessionBuffer.readLine(this.lineBuf);
89             if (i == -1 && count == 0) {
90                 // The server just dropped connection on us
91                 throw new NoHttpResponseException("The target server failed to respond");
92             }
93             cursor = new ParserCursor(0, this.lineBuf.length());
94             if (lineParser.hasProtocolVersion(this.lineBuf, cursor)) {
95                 // Got one
96                 break;
97             } else if (i == -1 || count >= this.maxGarbageLines) {
98                 // Giving up
99                 throw new ProtocolException("The server failed to respond with a " +
100                         "valid HTTP response");
101             }
102             count++;
103         } while(true);
104         //create the status line from the status string
105         StatusLine statusline = lineParser.parseStatusLine(this.lineBuf, cursor);
106         return this.responseFactory.newHttpResponse(statusline, null);
107     }
108 
109 }
110