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      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 (at) 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