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.impl.io;
29
30 import java.io.IOException;
31
32 import org.apache.http.ConnectionClosedException;
33 import org.apache.http.HttpException;
34 import org.apache.http.HttpMessage;
35 import org.apache.http.HttpRequestFactory;
36 import org.apache.http.ParseException;
37 import org.apache.http.RequestLine;
38 import org.apache.http.io.SessionInputBuffer;
39 import org.apache.http.message.LineParser;
40 import org.apache.http.message.ParserCursor;
41 import org.apache.http.params.HttpParams;
42 import org.apache.http.util.Args;
43 import org.apache.http.util.CharArrayBuffer;
44
45 /**
46 * HTTP request parser that obtain its input from an instance
47 * of {@link SessionInputBuffer}.
48 * <p>
49 * The following parameters can be used to customize the behavior of this
50 * class:
51 * <ul>
52 * <li>{@link org.apache.http.params.CoreConnectionPNames#MAX_HEADER_COUNT}</li>
53 * <li>{@link org.apache.http.params.CoreConnectionPNames#MAX_LINE_LENGTH}</li>
54 * </ul>
55 *
56 * @since 4.0
57 *
58 * @deprecated (4.2) use {@link DefaultHttpRequestParser}
59 */
60 @Deprecated
61 public class HttpRequestParser extends AbstractMessageParser<HttpMessage> {
62
63 private final HttpRequestFactory requestFactory;
64 private final CharArrayBuffer lineBuf;
65
66 /**
67 * Creates an instance of this class.
68 *
69 * @param buffer the session input buffer.
70 * @param parser the line parser.
71 * @param requestFactory the factory to use to create
72 * {@link org.apache.http.HttpRequest}s.
73 * @param params HTTP parameters.
74 */
75 public HttpRequestParser(
76 final SessionInputBuffer buffer,
77 final LineParser parser,
78 final HttpRequestFactory requestFactory,
79 final HttpParams params) {
80 super(buffer, parser, params);
81 this.requestFactory = Args.notNull(requestFactory, "Request factory");
82 this.lineBuf = new CharArrayBuffer(128);
83 }
84
85 @Override
86 protected HttpMessage parseHead(
87 final SessionInputBuffer sessionBuffer)
88 throws IOException, HttpException, ParseException {
89
90 this.lineBuf.clear();
91 final int readLen = sessionBuffer.readLine(this.lineBuf);
92 if (readLen == -1) {
93 throw new ConnectionClosedException("Client closed connection");
94 }
95 final ParserCursorursor.html#ParserCursor">ParserCursor cursor = new ParserCursor(0, this.lineBuf.length());
96 final RequestLine requestline = this.lineParser.parseRequestLine(this.lineBuf, cursor);
97 return this.requestFactory.newHttpRequest(requestline);
98 }
99
100 }