1/*
2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/HttpVersion.java $
3 * $Revision: 609106 $
4 * $Date: 2008-01-05 01:15:42 -0800 (Sat, 05 Jan 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
32package org.apache.http;
33
34import java.io.Serializable;
35
36/**
37 * Represents an HTTP version, as specified in RFC 2616.
38 *
39 * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
40 *
41 * @version $Revision: 609106 $ $Date: 2008-01-05 01:15:42 -0800 (Sat, 05 Jan 2008) $
42 *
43 * @deprecated Please use {@link java.net.URL#openConnection} instead.
44 *     Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a>
45 *     for further details.
46 */
47@Deprecated
48public final class HttpVersion extends ProtocolVersion
49    implements Serializable {
50
51    private static final long serialVersionUID = -5856653513894415344L;
52
53    /** The protocol name. */
54    public static final String HTTP = "HTTP";
55
56    /** HTTP protocol version 0.9 */
57    public static final HttpVersion HTTP_0_9 = new HttpVersion(0, 9);
58
59    /** HTTP protocol version 1.0 */
60    public static final HttpVersion HTTP_1_0 = new HttpVersion(1, 0);
61
62    /** HTTP protocol version 1.1 */
63    public static final HttpVersion HTTP_1_1 = new HttpVersion(1, 1);
64
65
66    /**
67     * Create an HTTP protocol version designator.
68     *
69     * @param major   the major version number of the HTTP protocol
70     * @param minor   the minor version number of the HTTP protocol
71     *
72     * @throws IllegalArgumentException if either major or minor version number is negative
73     */
74    public HttpVersion(int major, int minor) {
75        super(HTTP, major, minor);
76    }
77
78
79    /**
80     * Obtains a specific HTTP version.
81     *
82     * @param major     the major version
83     * @param minor     the minor version
84     *
85     * @return  an instance of {@link HttpVersion} with the argument version
86     */
87    public ProtocolVersion forVersion(int major, int minor) {
88
89        if ((major == this.major) && (minor == this.minor)) {
90            return this;
91        }
92
93        if (major == 1) {
94            if (minor == 0) {
95                return HTTP_1_0;
96            }
97            if (minor == 1) {
98                return HTTP_1_1;
99            }
100        }
101        if ((major == 0) && (minor == 9)) {
102            return HTTP_0_9;
103        }
104
105        // argument checking is done in the constructor
106        return new HttpVersion(major, minor);
107    }
108
109}
110