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      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 
     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
     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