| /* |
| * ==================================================================== |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| |
| package org.apache.hc.core5.http; |
| |
| import org.apache.hc.core5.annotation.Contract; |
| import org.apache.hc.core5.annotation.ThreadingBehavior; |
| |
| /** |
| * Represents an HTTP version. HTTP uses a "major.minor" numbering |
| * scheme to indicate versions of the protocol. |
| * <p> |
| * The version of an HTTP message is indicated by an HTTP-Version field |
| * in the first line of the message. |
| * </p> |
| * |
| * @since 4.0 |
| */ |
| @Contract(threading = ThreadingBehavior.IMMUTABLE) |
| public final class HttpVersion extends ProtocolVersion { |
| |
| private static final long serialVersionUID = -5856653513894415344L; |
| |
| /** The protocol name. */ |
| public static final String HTTP = "HTTP"; |
| |
| /** HTTP protocol version 0.9 */ |
| public static final HttpVersion HTTP_0_9 = new HttpVersion(0, 9); |
| |
| /** HTTP protocol version 1.0 */ |
| public static final HttpVersion HTTP_1_0 = new HttpVersion(1, 0); |
| |
| /** HTTP protocol version 1.1 */ |
| public static final HttpVersion HTTP_1_1 = new HttpVersion(1, 1); |
| |
| /** HTTP protocol version 2.0 */ |
| public static final HttpVersion HTTP_2_0 = new HttpVersion(2, 0); |
| public static final HttpVersion HTTP_2 = HTTP_2_0; |
| |
| /** HTTP/1.1 is default */ |
| public static final HttpVersion DEFAULT = HTTP_1_1; |
| |
| /** |
| * All HTTP versions known to HttpCore. |
| */ |
| public static final HttpVersion[] ALL = {HTTP_0_9, HTTP_1_0, HTTP_1_1, HTTP_2_0}; |
| |
| /** |
| * Gets a specific instance or creates a new one. |
| * |
| * @param major the major version |
| * @param minor the minor version |
| * |
| * @return an instance of {@link HttpVersion} with the argument version, never null. |
| * @throws IllegalArgumentException if either major or minor version number is negative |
| * @since 5.0 |
| */ |
| public static HttpVersion get(final int major, final int minor) { |
| for (int i = 0; i < ALL.length; i++) { |
| if (ALL[i].equals(major, minor)) { |
| return ALL[i]; |
| } |
| } |
| // argument checking is done in the constructor |
| return new HttpVersion(major, minor); |
| } |
| |
| /** |
| * Creates an HTTP protocol version designator. |
| * |
| * @param major the major version number of the HTTP protocol |
| * @param minor the minor version number of the HTTP protocol |
| * |
| * @throws IllegalArgumentException if either major or minor version number is negative |
| */ |
| public HttpVersion(final int major, final int minor) { |
| super(HTTP, major, minor); |
| } |
| |
| } |