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The Netty project is an effort to provide an asynchronous event-driven network application framework and tools for rapid development of maintainable high performance and high scalability protocol servers and clients. In other words, Netty is a NIO client server framework which enables quick and easy development of network applications such as protocol servers and clients. It greatly simplifies and streamlines network programming such as TCP and UDP socket server.

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/*
 * Copyright 2012 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 org.jboss.netty.channel.socket;

import org.jboss.netty.channel.ChannelException;
import org.jboss.netty.channel.DefaultChannelConfig;
import org.jboss.netty.util.internal.ConversionUtil;

import java.net.Socket;
import java.net.SocketException;

/**
 * The default {@link SocketChannelConfig} implementation.
 */
public class DefaultSocketChannelConfig extends DefaultChannelConfig
                                        implements SocketChannelConfig {

    private final Socket socket;

    /**
     * Creates a new instance.
     */
    public DefaultSocketChannelConfig(Socket socket) {
        if (socket == null) {
            throw new NullPointerException("socket");
        }
        this.socket = socket;
    }

    @Override
    public boolean setOption(String key, Object value) {
        if (super.setOption(key, value)) {
            return true;
        }

        if ("receiveBufferSize".equals(key)) {
            setReceiveBufferSize(ConversionUtil.toInt(value));
        } else if ("sendBufferSize".equals(key)) {
            setSendBufferSize(ConversionUtil.toInt(value));
        } else if ("tcpNoDelay".equals(key)) {
            setTcpNoDelay(ConversionUtil.toBoolean(value));
        } else if ("keepAlive".equals(key)) {
            setKeepAlive(ConversionUtil.toBoolean(value));
        } else if ("reuseAddress".equals(key)) {
            setReuseAddress(ConversionUtil.toBoolean(value));
        } else if ("soLinger".equals(key)) {
            setSoLinger(ConversionUtil.toInt(value));
        } else if ("trafficClass".equals(key)) {
            setTrafficClass(ConversionUtil.toInt(value));
        } else {
            return false;
        }
        return true;
    }

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

    public int getSendBufferSize() {
        try {
            return socket.getSendBufferSize();
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public int getSoLinger() {
        try {
            return socket.getSoLinger();
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public int getTrafficClass() {
        try {
            return socket.getTrafficClass();
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public boolean isKeepAlive() {
        try {
            return socket.getKeepAlive();
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

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

    public boolean isTcpNoDelay() {
        try {
            return socket.getTcpNoDelay();
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public void setKeepAlive(boolean keepAlive) {
        try {
            socket.setKeepAlive(keepAlive);
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public void setPerformancePreferences(
            int connectionTime, int latency, int bandwidth) {
        socket.setPerformancePreferences(connectionTime, latency, bandwidth);
    }

    public void setReceiveBufferSize(int receiveBufferSize) {
        try {
            socket.setReceiveBufferSize(receiveBufferSize);
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public void setReuseAddress(boolean reuseAddress) {
        try {
            socket.setReuseAddress(reuseAddress);
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public void setSendBufferSize(int sendBufferSize) {
        try {
            socket.setSendBufferSize(sendBufferSize);
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public void setSoLinger(int soLinger) {
        try {
            if (soLinger < 0) {
                socket.setSoLinger(false, 0);
            } else {
                socket.setSoLinger(true, soLinger);
            }
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public void setTcpNoDelay(boolean tcpNoDelay) {
        try {
            socket.setTcpNoDelay(tcpNoDelay);
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }

    public void setTrafficClass(int trafficClass) {
        try {
            socket.setTrafficClass(trafficClass);
        } catch (SocketException e) {
            throw new ChannelException(e);
        }
    }
}