HttpUtil.java — netty Source File

Source Code

/*
 * Copyright 2015 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 java.net.InetSocketAddress;
import java.net.URI;
import java.nio.charset.Charset;
import java.nio.charset.IllegalCharsetNameException;
import java.nio.charset.UnsupportedCharsetException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import io.netty.util.AsciiString;
import io.netty.util.CharsetUtil;
import io.netty.util.NetUtil;
import io.netty.util.internal.ObjectUtil;

import static io.netty.util.internal.StringUtil.COMMA;
import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;

/**
 * Utility methods useful in the HTTP context.
 */
public final class HttpUtil {

    private static final AsciiString CHARSET_EQUALS = AsciiString.of(HttpHeaderValues.CHARSET + "=");
    private static final AsciiString SEMICOLON = AsciiString.cached(";");
    private static final String COMMA_STRING = String.valueOf(COMMA);

    private HttpUtil() { }

    /**
     * Determine if a uri is in origin-form according to
     * <a href="https://datatracker.ietf.org/doc/html/rfc9112#section-3.2.1">RFC 9112, 3.2.1</a>.
     */
    public static boolean isOriginForm(URI uri) {
        return isOriginForm(uri.toString());
    }

    /**
     * Determine if a string uri is in origin-form according to
     * <a href="https://datatracker.ietf.org/doc/html/rfc9112#section-3.2.1">RFC 9112, 3.2.1</a>.
     */
    public static boolean isOriginForm(String uri) {
        return uri.startsWith("/");
    }
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