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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS 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 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.channel.epoll;

import io.netty.channel.Channel;
import io.netty.channel.ChannelConfig;
import io.netty.channel.ChannelMetadata;
import io.netty.channel.ChannelOutboundBuffer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelPromise;
import io.netty.channel.EventLoop;
import io.netty.channel.ServerChannel;

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

public abstract class AbstractEpollServerChannel extends AbstractEpollChannel implements ServerChannel {
    private static final ChannelMetadata METADATA = new ChannelMetadata(false, 16);

    protected AbstractEpollServerChannel(int fd) {
        this(new LinuxSocket(fd), false);
    }

    protected AbstractEpollServerChannel(LinuxSocket fd) {
        this(fd, isSoErrorZero(fd));
    }

    protected AbstractEpollServerChannel(LinuxSocket fd, boolean active) {
        super(null, fd, active);
    }

    @Override
    public ChannelMetadata metadata() {
        return METADATA;
    }

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

    @Override
    protected InetSocketAddress remoteAddress0() {
        return null;
    }

    @Override
    protected AbstractEpollUnsafe newUnsafe() {
        return new EpollServerSocketUnsafe();
    }

    @Override
    protected void doWrite(ChannelOutboundBuffer in) throws Exception {
        throw new UnsupportedOperationException();
    }

    @Override
    protected Object filterOutboundMessage(Object msg) throws Exception {
        throw new UnsupportedOperationException();
    }

    protected abstract Channel newChildChannel(int fd, byte[] remote, int offset, int len) throws Exception;

    final class EpollServerSocketUnsafe extends AbstractEpollUnsafe {
        // Will hold the remote address after accept(...) was successful.
        // We need 24 bytes for the address as maximum + 1 byte for storing the length.
        // So use 26 bytes as it's a power of two.
        private final byte[] acceptedAddress = new byte[26];

        @Override
        public void connect(SocketAddress socketAddress, SocketAddress socketAddress2, ChannelPromise channelPromise) {
            // Connect not supported by ServerChannel implementations
            channelPromise.setFailure(new UnsupportedOperationException());
        }

        @Override
        void epollInReady() {
            assert eventLoop().inEventLoop();
            final ChannelConfig config = config();
            if (shouldBreakEpollInReady(config)) {
                clearEpollIn0();
                return;
            }
            final EpollRecvByteAllocatorHandle allocHandle = recvBufAllocHandle();
            allocHandle.edgeTriggered(isFlagSet(Native.EPOLLET));

            final ChannelPipeline pipeline = pipeline();
            allocHandle.reset(config);
            allocHandle.attemptedBytesRead(1);
            epollInBefore();

            Throwable exception = null;
            try {
                try {
                    do {
                        // lastBytesRead represents the fd. We use lastBytesRead because it must be set so that the
                        // EpollRecvByteAllocatorHandle knows if it should try to read again or not when autoRead is
                        // enabled.
                        allocHandle.lastBytesRead(socket.accept(acceptedAddress));
                        if (allocHandle.lastBytesRead() == -1) {
                            // this means everything was handled for now
                            break;
                        }
                        allocHandle.incMessagesRead(1);

                        readPending = false;
                        pipeline.fireChannelRead(newChildChannel(allocHandle.lastBytesRead(), acceptedAddress, 1,
                                                                 acceptedAddress[0]));
                    } while (allocHandle.continueReading());
                } catch (Throwable t) {
                    exception = t;
                }
                allocHandle.readComplete();
                pipeline.fireChannelReadComplete();

                if (exception != null) {
                    pipeline.fireExceptionCaught(exception);
                }
            } finally {
                epollInFinally(config);
            }
        }
    }

    @Override
    protected boolean doConnect(SocketAddress remoteAddress, SocketAddress localAddress) throws Exception {
        throw new UnsupportedOperationException();
    }
}