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 
32 package org.apache.http;
33 
34 import 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
48 public 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