1 /*
2 * Copyright 2012 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.example.qotm;
17
18 import io.netty.bootstrap.Bootstrap;
19 import io.netty.channel.ChannelOption;
20 import io.netty.channel.EventLoopGroup;
21 import io.netty.channel.MultiThreadIoEventLoopGroup;
22 import io.netty.channel.nio.NioIoHandler;
23 import io.netty.channel.socket.nio.NioDatagramChannel;
24
25 /**
26 * A UDP server that responds to the QOTM (quote of the moment) request to a {@link QuoteOfTheMomentClient}.
27 *
28 * Inspired by <a href="https://docs.oracle.com/javase/tutorial/networking/datagrams/clientServer.html">the official
29 * Java tutorial</a>.
30 */
31 public final class QuoteOfTheMomentServer {
32
33 private static final int PORT = Integer.parseInt(System.getProperty("port", "7686"));
34
35 public static void main(String[] args) throws Exception {
36 EventLoopGroup group = new MultiThreadIoEventLoopGroup(NioIoHandler.newFactory());
37 try {
38 Bootstrap b = new Bootstrap();
39 b.group(group)
40 .channel(NioDatagramChannel.class)
41 .option(ChannelOption.SO_BROADCAST, true)
42 .handler(new QuoteOfTheMomentServerHandler());
43
44 b.bind(PORT).sync().channel().closeFuture().await();
45 } finally {
46 group.shutdownGracefully();
47 }
48 }
49 }