BsdSocket.java — netty Source File

Source Code

/*
 * Copyright 2016 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.kqueue;

import io.netty.channel.DefaultFileRegion;
import io.netty.channel.socket.InternetProtocolFamily;
import io.netty.channel.socket.SocketProtocolFamily;
import io.netty.channel.unix.IovArray;
import io.netty.channel.unix.PeerCredentials;
import io.netty.channel.unix.Socket;

import java.io.IOException;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.InetSocketAddress;

import static io.netty.channel.kqueue.AcceptFilter.PLATFORM_UNSUPPORTED;
import static io.netty.channel.kqueue.Native.CONNECT_TCP_FASTOPEN;
import static io.netty.channel.unix.Errors.ERRNO_EINPROGRESS_NEGATIVE;
import static io.netty.channel.unix.Errors.ioResult;
import static io.netty.channel.unix.NativeInetAddress.ipv4MappedIpv6Address;
import static io.netty.util.internal.ObjectUtil.checkNotNull;

/**
 * A socket which provides access BSD native methods.
 */
final class BsdSocket extends Socket {

    // These limits are just based on observations. I couldn't find anything in header files which formally
    // define these limits.
    private static final int APPLE_SND_LOW_AT_MAX = 1 << 17;
    private static final int FREEBSD_SND_LOW_AT_MAX = 1 << 15;
    static final int BSD_SND_LOW_AT_MAX = Math.min(APPLE_SND_LOW_AT_MAX, FREEBSD_SND_LOW_AT_MAX);
    /**
     * The `endpoints` structure passed to `connectx(2)` has an optional "source interface" field,
     * which is the index of the network interface to use.
     * According to `if_nametoindex(3)`, the value 0 is used when no interface is specified.
     */
    private static final int UNSPECIFIED_SOURCE_INTERFACE = 0;

    BsdSocket(int fd) {
        super(fd);
    }

    void setAcceptFilter(AcceptFilter acceptFilter) throws IOException {
        setAcceptFilter(intValue(), acceptFilter.filterName(), acceptFilter.filterArgs());
    }
// ... (211 more lines)