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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.oio;

import java.io.IOException;
import java.io.OutputStream;
import java.io.PushbackInputStream;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketException;

import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelSink;
import org.jboss.netty.channel.ChannelException;
import org.jboss.netty.channel.ChannelFactory;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.socket.DefaultSocketChannelConfig;
import org.jboss.netty.channel.socket.SocketChannel;
import org.jboss.netty.channel.socket.SocketChannelConfig;

abstract class OioSocketChannel extends AbstractOioChannel
                                implements SocketChannel {

    final Socket socket;
    private final SocketChannelConfig config;

    OioSocketChannel(
            Channel parent,
            ChannelFactory factory,
            ChannelPipeline pipeline,
            ChannelSink sink,
            Socket socket) {

        super(parent, factory, pipeline, sink);

        this.socket = socket;
        try {
            socket.setSoTimeout(1000);
        } catch (SocketException e) {
            throw new ChannelException(
                    "Failed to configure the OioSocketChannel socket timeout.", e);
        }
        config = new DefaultSocketChannelConfig(socket);
    }

    public SocketChannelConfig getConfig() {
        return config;
    }

    abstract PushbackInputStream getInputStream();
    abstract OutputStream getOutputStream();

    @Override
    boolean isSocketBound() {
        return socket.isBound();
    }

    @Override
    boolean isSocketConnected() {
        return socket.isConnected();
    }

    @Override
    InetSocketAddress getLocalSocketAddress() throws Exception {
        return (InetSocketAddress) socket.getLocalSocketAddress();
    }

    @Override
    InetSocketAddress getRemoteSocketAddress() throws Exception {
        return (InetSocketAddress) socket.getRemoteSocketAddress();
    }

    @Override
    void closeSocket() throws IOException {
        socket.close();
    }

    @Override
    boolean isSocketClosed() {
        return socket.isClosed();
    }
}