qotm.QuoteOfTheMomentClient.java Source code

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Here is the source code for qotm.QuoteOfTheMomentClient.java

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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 qotm;

import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.DatagramPacket;
import io.netty.channel.socket.nio.NioDatagramChannel;
import io.netty.util.CharsetUtil;
import io.netty.util.internal.SocketUtils;

/**
 * A UDP broadcast client that asks for a quote of the moment (QOTM) to {@link QuoteOfTheMomentServer}.
 *
 * Inspired by <a href="http://docs.oracle.com/javase/tutorial/networking/datagrams/clientServer.html">the official
 * Java tutorial</a>.
 */
public final class QuoteOfTheMomentClient {

    static final int PORT = Integer.parseInt(System.getProperty("port", "9999"));

    public static void main(String[] args) throws Exception {

        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioDatagramChannel.class).option(ChannelOption.SO_BROADCAST, true)
                    .handler(new ChannelInitializer<NioDatagramChannel>() {
                        @Override
                        protected void initChannel(NioDatagramChannel ch) throws Exception {
                            //ch.pipeline().addLast(new UdpEncoder());
                            //ch.pipeline().addLast(new QuoteOfTheMomentClientHandler());

                        }
                    });

            Channel ch = b.bind(0).sync().channel();

            while (true) {
                // Broadcast the QOTM request to port 8080.
                ch.writeAndFlush(new DatagramPacket(Unpooled.copiedBuffer("QOTM?", CharsetUtil.UTF_8),
                        SocketUtils.socketAddress("192.168.0.23", 124))).sync();
                // Broadcast the QOTM request to port 8080.
                ch.writeAndFlush(new DatagramPacket(Unpooled.copiedBuffer("QOTM?", CharsetUtil.UTF_8),
                        SocketUtils.socketAddress("192.168.0.23", 123))).sync();
            }

            /*ch.writeAndFlush(new DatagramPacket(
                Unpooled.copiedBuffer("QOTM?", CharsetUtil.UTF_8),
                SocketUtils.socketAddress("192.168.0.23", 12345))).sync();*/

            // QuoteOfTheMomentClientHandler will close the DatagramChannel when a
            // response is received.  If the channel is not closed within 5 seconds,
            // print an error message and quit.
            /*if (!ch.closeFuture().await(5000)) {
            System.err.println("QOTM request timed out.");
            }*/
        } finally {
            group.shutdownGracefully();
        }
    }
}