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107 lines
3.3 KiB
Java
107 lines
3.3 KiB
Java
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/*
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package ch.boye.httpclientandroidlib;
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import java.io.Serializable;
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/**
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* Represents an HTTP version. HTTP uses a "major.minor" numbering
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* scheme to indicate versions of the protocol.
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* <p>
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* The version of an HTTP message is indicated by an HTTP-Version field
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* in the first line of the message.
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* </p>
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* <pre>
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* HTTP-Version = "HTTP" "/" 1*DIGIT "." 1*DIGIT
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* </pre>
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*
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* @since 4.0
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*/
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public final class HttpVersion extends ProtocolVersion
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implements Serializable {
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private static final long serialVersionUID = -5856653513894415344L;
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/** The protocol name. */
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public static final String HTTP = "HTTP";
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/** HTTP protocol version 0.9 */
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public static final HttpVersion HTTP_0_9 = new HttpVersion(0, 9);
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/** HTTP protocol version 1.0 */
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public static final HttpVersion HTTP_1_0 = new HttpVersion(1, 0);
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/** HTTP protocol version 1.1 */
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public static final HttpVersion HTTP_1_1 = new HttpVersion(1, 1);
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/**
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* Create an HTTP protocol version designator.
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*
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* @param major the major version number of the HTTP protocol
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* @param minor the minor version number of the HTTP protocol
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*
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* @throws IllegalArgumentException if either major or minor version number is negative
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*/
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public HttpVersion(int major, int minor) {
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super(HTTP, major, minor);
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}
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/**
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* Obtains a specific HTTP version.
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*
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* @param major the major version
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* @param minor the minor version
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*
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* @return an instance of {@link HttpVersion} with the argument version
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*/
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public ProtocolVersion forVersion(int major, int minor) {
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if ((major == this.major) && (minor == this.minor)) {
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return this;
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}
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if (major == 1) {
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if (minor == 0) {
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return HTTP_1_0;
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}
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if (minor == 1) {
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return HTTP_1_1;
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}
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}
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if ((major == 0) && (minor == 9)) {
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return HTTP_0_9;
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}
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// argument checking is done in the constructor
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return new HttpVersion(major, minor);
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}
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}
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