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.hc.client5.http.impl.io;
29
30 import java.io.IOException;
31
32 import org.apache.hc.core5.http.ClassicHttpResponse;
33 import org.apache.hc.core5.http.HttpException;
34 import org.apache.hc.core5.http.HttpResponseFactory;
35 import org.apache.hc.core5.http.config.Http1Config;
36 import org.apache.hc.core5.http.impl.io.DefaultHttpResponseParser;
37 import org.apache.hc.core5.http.message.LineParser;
38 import org.apache.hc.core5.util.CharArrayBuffer;
39 import org.slf4j.Logger;
40 import org.slf4j.LoggerFactory;
41
42 /**
43 * Lenient HTTP response parser implementation that can skip malformed data until
44 * a valid HTTP response message head is encountered.
45 *
46 * @since 4.2
47 */
48 public class LenientHttpResponseParser extends DefaultHttpResponseParser {
49
50 private static final Logger LOG = LoggerFactory.getLogger(LenientHttpResponseParser.class);
51
52 /**
53 * Creates new instance of DefaultHttpResponseParser.
54 *
55 * @param lineParser the line parser. If {@code null}
56 * {@link org.apache.hc.core5.http.message.BasicLineParser#INSTANCE} will be used.
57 * @param responseFactory HTTP response factory. If {@code null}
58 * {@link org.apache.hc.core5.http.impl.io.DefaultClassicHttpResponseFactory#INSTANCE}
59 * will be used.
60 * @param h1Config HTTP/1.1 parameters. If {@code null}. {@link Http1Config#DEFAULT} will be used.
61 *
62 * @since 4.3
63 */
64 public LenientHttpResponseParser(
65 final LineParser lineParser,
66 final HttpResponseFactory<ClassicHttpResponse> responseFactory,
67 final Http1Config h1Config) {
68 super(lineParser, responseFactory, h1Config);
69 }
70
71 /**
72 * Creates new instance of DefaultHttpResponseParser.
73 *
74 * @param h1Config HTTP/1.1 parameters. If {@code null}. {@link Http1Config#DEFAULT} will be used.
75 *
76 * @since 4.3
77 */
78 public LenientHttpResponseParser(final Http1Config h1Config) {
79 this(null, null, h1Config);
80 }
81
82 @Override
83 protected ClassicHttpResponse createMessage(final CharArrayBuffer buffer) throws IOException {
84 try {
85 return super.createMessage(buffer);
86 } catch (final HttpException ex) {
87 if (LOG.isDebugEnabled()) {
88 LOG.debug("Garbage in response: {}", buffer);
89 }
90 return null;
91 }
92 }
93
94 }