DnsMessageUtil.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.dns;

import io.netty.buffer.ByteBuf;
import io.netty.channel.AddressedEnvelope;
import io.netty.handler.codec.CorruptedFrameException;
import io.netty.util.internal.StringUtil;

import java.net.SocketAddress;

/**
 * Provides some utility methods for DNS message implementations.
 */
final class DnsMessageUtil {

    static StringBuilder appendQuery(StringBuilder buf, DnsQuery query) {
        appendQueryHeader(buf, query);
        appendAllRecords(buf, query);
        return buf;
    }

    static StringBuilder appendResponse(StringBuilder buf, DnsResponse response) {
        appendResponseHeader(buf, response);
        appendAllRecords(buf, response);
        return buf;
    }

    static StringBuilder appendRecordClass(StringBuilder buf, int dnsClass) {
        final String name;
        switch (dnsClass &= 0xFFFF) {
        case DnsRecord.CLASS_IN:
            name = "IN";
            break;
        case DnsRecord.CLASS_CSNET:
            name = "CSNET";
            break;
        case DnsRecord.CLASS_CHAOS:
            name = "CHAOS";
            break;
        case DnsRecord.CLASS_HESIOD:
            name = "HESIOD";
            break;
        case DnsRecord.CLASS_NONE:
            name = "NONE";
            break;
        case DnsRecord.CLASS_ANY:
// ... (245 more lines)