SockaddrIn.java — netty Source File

Source Code

/*
 * Copyright 2024 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.channel.uring;

import io.netty.channel.unix.DomainSocketAddress;
import io.netty.util.internal.PlatformDependent;

import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.charset.StandardCharsets;

final class SockaddrIn {
    static final byte[] IPV4_MAPPED_IPV6_PREFIX = {
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, (byte) 0xff, (byte) 0xff };
    static final int IPV4_ADDRESS_LENGTH = 4;
    static final int IPV6_ADDRESS_LENGTH = 16;
    static final byte[] SOCKADDR_IN6_EMPTY_ARRAY = new byte[Native.SIZEOF_SOCKADDR_IN6];
    static final byte[] SOCKADDR_IN_EMPTY_ARRAY = new byte[Native.SIZEOF_SOCKADDR_IN];

    private SockaddrIn() { }

    static int set(boolean ipv6, ByteBuffer memory, InetSocketAddress address) {
        if (ipv6) {
            return setIPv6(memory, address.getAddress(), address.getPort());
        }
        return setIPv4(memory, address.getAddress(), address.getPort());
    }

    /**
     * <pre>{@code
     * struct sockaddr_in {
     *      sa_family_t    sin_family; // address family: AF_INET
     *      in_port_t      sin_port;   // port in network byte order
     *      struct in_addr sin_addr;   // internet address
     * };
     *
     * // Internet address.
     * struct in_addr {
     *     uint32_t       s_addr;     // address in network byte order
     * };
     * }</pre>
     */
// ... (181 more lines)