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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 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:
 *
 *   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.buffer.ByteBufAllocator;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelOption;
import io.netty.channel.MessageSizeEstimator;
import io.netty.channel.RecvByteBufAllocator;
import io.netty.channel.WriteBufferWaterMark;
import io.netty.channel.socket.ServerSocketChannelConfig;
import io.netty.util.NetUtil;

import java.io.IOException;
import java.util.Map;

import static io.netty.channel.ChannelOption.SO_BACKLOG;
import static io.netty.channel.ChannelOption.SO_RCVBUF;
import static io.netty.channel.ChannelOption.SO_REUSEADDR;

public class EpollServerChannelConfig extends EpollChannelConfig implements ServerSocketChannelConfig {
    protected final AbstractEpollChannel channel;
    private volatile int backlog = NetUtil.SOMAXCONN;
    private volatile int pendingFastOpenRequestsThreshold;

    EpollServerChannelConfig(AbstractEpollChannel channel) {
        super(channel);
        this.channel = channel;
    }

    @Override
    public Map, Object> getOptions() {
        return getOptions(super.getOptions(), SO_RCVBUF, SO_REUSEADDR, SO_BACKLOG, EpollChannelOption.TCP_FASTOPEN);
    }

    @SuppressWarnings("unchecked")
    @Override
    public  T getOption(ChannelOption option) {
        if (option == SO_RCVBUF) {
            return (T) Integer.valueOf(getReceiveBufferSize());
        }
        if (option == SO_REUSEADDR) {
            return (T) Boolean.valueOf(isReuseAddress());
        }
        if (option == SO_BACKLOG) {
            return (T) Integer.valueOf(getBacklog());
        }
        if (option == EpollChannelOption.TCP_FASTOPEN) {
            return (T) Integer.valueOf(getTcpFastopen());
        }
        return super.getOption(option);
    }

    @Override
    public  boolean setOption(ChannelOption option, T value) {
        validate(option, value);

        if (option == SO_RCVBUF) {
            setReceiveBufferSize((Integer) value);
        } else if (option == SO_REUSEADDR) {
            setReuseAddress((Boolean) value);
        } else if (option == SO_BACKLOG) {
            setBacklog((Integer) value);
        } else if (option == EpollChannelOption.TCP_FASTOPEN) {
            setTcpFastopen((Integer) value);
        } else {
            return super.setOption(option, value);
        }

        return true;
    }

    public boolean isReuseAddress() {
        try {
            return channel.socket.isReuseAddress();
        } catch (IOException e) {
            throw new ChannelException(e);
        }
    }

    public EpollServerChannelConfig setReuseAddress(boolean reuseAddress) {
        try {
            channel.socket.setReuseAddress(reuseAddress);
            return this;
        } catch (IOException e) {
            throw new ChannelException(e);
        }
    }

    public int getReceiveBufferSize() {
        try {
            return channel.socket.getReceiveBufferSize();
        } catch (IOException e) {
            throw new ChannelException(e);
        }
    }

    public EpollServerChannelConfig setReceiveBufferSize(int receiveBufferSize) {
        try {
            channel.socket.setReceiveBufferSize(receiveBufferSize);
            return this;
        } catch (IOException e) {
            throw new ChannelException(e);
        }
    }

    public int getBacklog() {
        return backlog;
    }

    public EpollServerChannelConfig setBacklog(int backlog) {
        if (backlog < 0) {
            throw new IllegalArgumentException("backlog: " + backlog);
        }
        this.backlog = backlog;
        return this;
    }

    /**
     * Returns threshold value of number of pending for fast open connect.
     *
     * @see RFC 7413 Passive Open
     */
    public int getTcpFastopen() {
        return pendingFastOpenRequestsThreshold;
    }

    /**
     * Enables tcpFastOpen on the server channel. If the underlying os doesnt support TCP_FASTOPEN setting this has no
     * effect. This has to be set before doing listen on the socket otherwise this takes no effect.
     *
     * @param pendingFastOpenRequestsThreshold number of requests to be pending for fastopen at a given point in time
     * for security. @see RFC 7413 Passive Open
     *
     * @see RFC 7413 TCP FastOpen
     */
    public EpollServerChannelConfig setTcpFastopen(int pendingFastOpenRequestsThreshold) {
        if (this.pendingFastOpenRequestsThreshold < 0) {
            throw new IllegalArgumentException("pendingFastOpenRequestsThreshold: " + pendingFastOpenRequestsThreshold);
        }
        this.pendingFastOpenRequestsThreshold = pendingFastOpenRequestsThreshold;
        return this;
    }

    @Override
    public EpollServerChannelConfig setPerformancePreferences(int connectionTime, int latency, int bandwidth) {
        return this;
    }

    @Override
    public EpollServerChannelConfig setConnectTimeoutMillis(int connectTimeoutMillis) {
        super.setConnectTimeoutMillis(connectTimeoutMillis);
        return this;
    }

    @Override
    @Deprecated
    public EpollServerChannelConfig setMaxMessagesPerRead(int maxMessagesPerRead) {
        super.setMaxMessagesPerRead(maxMessagesPerRead);
        return this;
    }

    @Override
    public EpollServerChannelConfig setWriteSpinCount(int writeSpinCount) {
        super.setWriteSpinCount(writeSpinCount);
        return this;
    }

    @Override
    public EpollServerChannelConfig setAllocator(ByteBufAllocator allocator) {
        super.setAllocator(allocator);
        return this;
    }

    @Override
    public EpollServerChannelConfig setRecvByteBufAllocator(RecvByteBufAllocator allocator) {
        super.setRecvByteBufAllocator(allocator);
        return this;
    }

    @Override
    public EpollServerChannelConfig setAutoRead(boolean autoRead) {
        super.setAutoRead(autoRead);
        return this;
    }

    @Override
    @Deprecated
    public EpollServerChannelConfig setWriteBufferHighWaterMark(int writeBufferHighWaterMark) {
        super.setWriteBufferHighWaterMark(writeBufferHighWaterMark);
        return this;
    }

    @Override
    @Deprecated
    public EpollServerChannelConfig setWriteBufferLowWaterMark(int writeBufferLowWaterMark) {
        super.setWriteBufferLowWaterMark(writeBufferLowWaterMark);
        return this;
    }

    @Override
    public EpollServerChannelConfig setWriteBufferWaterMark(WriteBufferWaterMark writeBufferWaterMark) {
        super.setWriteBufferWaterMark(writeBufferWaterMark);
        return this;
    }

    @Override
    public EpollServerChannelConfig setMessageSizeEstimator(MessageSizeEstimator estimator) {
        super.setMessageSizeEstimator(estimator);
        return this;
    }

    @Override
    public EpollServerChannelConfig setEpollMode(EpollMode mode) {
        super.setEpollMode(mode);
        return this;
    }
}