HttpVersion.java — netty Source File

Source Code

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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.
 */
package io.netty.handler.codec.http;

import io.netty.buffer.ByteBuf;
import io.netty.util.CharsetUtil;
import io.netty.util.internal.ObjectUtil;

import static io.netty.util.internal.ObjectUtil.checkNonEmptyAfterTrim;
import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;

/**
 * The version of HTTP or its derived protocols, such as
 * <a href="https://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol">RTSP</a> and
 * <a href="https://en.wikipedia.org/wiki/Internet_Content_Adaptation_Protocol">ICAP</a>.
 */
public class HttpVersion implements Comparable<HttpVersion> {

    static final String HTTP_1_0_STRING = "HTTP/1.0";
    static final String HTTP_1_1_STRING = "HTTP/1.1";

    /**
     * HTTP/1.0
     */
    public static final HttpVersion HTTP_1_0 = new HttpVersion("HTTP", 1, 0, false, true);

    /**
     * HTTP/1.1
     */
    public static final HttpVersion HTTP_1_1 = new HttpVersion("HTTP", 1, 1, true, true);

    /**
     * Returns an existing or new {@link HttpVersion} instance which matches to
     * the specified protocol version string.  If the specified {@code text} is
     * equal to {@code "HTTP/1.0"}, {@link #HTTP_1_0} will be returned.  If the
     * specified {@code text} is equal to {@code "HTTP/1.1"}, {@link #HTTP_1_1}
     * will be returned.  Otherwise, a new {@link HttpVersion} instance will be
     * returned.
     */
    public static HttpVersion valueOf(String text) {
        return valueOf(text, false);
    }

    static HttpVersion valueOf(String text, boolean strict) {
        ObjectUtil.checkNotNull(text, "text");

        // super fast-path
// ... (250 more lines)