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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2014 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:
 *
 *   http://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.epoll;

import io.netty.channel.Channel;
import io.netty.channel.EventLoop;
import io.netty.channel.socket.ServerSocketChannel;
import io.netty.channel.unix.FileDescriptor;

import java.net.InetSocketAddress;
import java.net.SocketAddress;

/**
 * {@link ServerSocketChannel} implementation that uses linux EPOLL Edge-Triggered Mode for
 * maximal performance.
 */
public final class EpollServerSocketChannel extends AbstractEpollServerChannel implements ServerSocketChannel {

    private final EpollServerSocketChannelConfig config;
    private volatile InetSocketAddress local;

    public EpollServerSocketChannel() {
        super(Native.socketStreamFd());
        config = new EpollServerSocketChannelConfig(this);
    }

    /**
     * Creates a new {@link EpollServerSocketChannel} from an existing {@link FileDescriptor}.
     */
    public EpollServerSocketChannel(FileDescriptor fd) {
        super(fd);
        config = new EpollServerSocketChannelConfig(this);

        // As we create an EpollServerSocketChannel from a FileDescriptor we should try to obtain the remote and local
        // address from it. This is needed as the FileDescriptor may be bound already.
        local = Native.localAddress(fd.intValue());
    }

    @Override
    protected boolean isCompatible(EventLoop loop) {
        return loop instanceof EpollEventLoop;
    }

    @Override
    protected void doBind(SocketAddress localAddress) throws Exception {
        InetSocketAddress addr = (InetSocketAddress) localAddress;
        checkResolvable(addr);
        int fd = fd().intValue();
        Native.bind(fd, addr);
        local = Native.localAddress(fd);
        Native.listen(fd, config.getBacklog());
        active = true;
    }

    @Override
    public InetSocketAddress remoteAddress() {
        return (InetSocketAddress) super.remoteAddress();
    }

    @Override
    public InetSocketAddress localAddress() {
        return (InetSocketAddress) super.localAddress();
    }

    @Override
    public EpollServerSocketChannelConfig config() {
        return config;
    }

    @Override
    protected InetSocketAddress localAddress0() {
        return local;
    }

    @Override
    protected Channel newChildChannel(int fd, byte[] address, int offset, int len) throws Exception {
        return new EpollSocketChannel(this, fd, Native.address(address, offset, len));
    }
}