public void init(ChannelPipelineFactory factory) throws Exception {
id =
String.format("%1$020d", Math.abs(new Random(System.currentTimeMillis()).nextLong()))
.getBytes();
group = new OioEventLoopGroup();
connectionlessBootstrap = new Bootstrap();
connectionlessBootstrap.group(group);
connectionlessBootstrap.option(ChannelOption.SO_BROADCAST, true);
connectionlessBootstrap.handler(factory);
connectionlessBootstrap.channel(OioDatagramChannel.class);
;
datagramChannel =
(DatagramChannel)
connectionlessBootstrap.bind(new InetSocketAddress(mcastGroupPort)).sync().channel();
multicastAddress = new InetSocketAddress(mcastGroupIp, mcastGroupPort);
NetworkInterface networkInterface =
NetworkInterface.getByInetAddress(InetAddress.getByName(bindAddress));
// for (Enumeration nifs = NetworkInterface.getNetworkInterfaces();
// nifs.hasMoreElements(); )
datagramChannel.joinGroup(multicastAddress, null); // (NetworkInterface)
// nifs.nextElement());
init = true;
if (debug) factory.debug();
}
public void run() throws Exception {
EventLoopGroup group = new NioEventLoopGroup();
try {
Bootstrap b = new Bootstrap();
b.group(group)
.channel(NioDatagramChannel.class)
.option(ChannelOption.SO_BROADCAST, true)
.handler(new QuoteOfTheMomentClientHandler());
Channel ch = b.bind(0).sync().channel();
// Broadcast the QOTM request to port 8080.
ch.write(
new DatagramPacket(
Unpooled.copiedBuffer("QOTM?", CharsetUtil.UTF_8),
new InetSocketAddress("255.255.255.255", port)))
.flush()
.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();
}
}
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 QuoteOfTheMomentServerHandler());
b.bind(PORT).sync().channel().closeFuture().await();
} finally {
group.shutdownGracefully();
}
}
public void run(final int port) {
EventLoopGroup group = new NioEventLoopGroup();
try {
Bootstrap boot = new Bootstrap();
boot.group(group)
.channel(NioDatagramChannel.class)
.option(ChannelOption.SO_BROADCAST, true)
.handler(
new SimpleChannelInboundHandler<DatagramPacket>() {
private final String[] DICTIONARY = {
"只要功夫深，铁棒磨成针。",
"旧时王谢堂前燕，飞入寻常百姓家。",
"洛阳亲友如相问，一片冰心在玉壶。",
"一寸光阴一寸金，寸金难买寸光阴。",
"老骥伏枥，志在千里。烈士暮年，壮心不已。"
};
@Override
protected void messageReceived(ChannelHandlerContext ctx, DatagramPacket msg)
throws Exception {
String req = msg.content().toString(CharsetUtil.UTF_8);
System.out.println("req=" + req);
if ("谚语字典查询？".equals(req)) {
ctx.writeAndFlush(
new DatagramPacket(
Unpooled.copiedBuffer("谚语查询结果： " + nextQuote(), CharsetUtil.UTF_8),
msg.sender()));
}
}
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.close();
}
private String nextQuote() {
return DICTIONARY[ThreadLocalRandom.current().nextInt(DICTIONARY.length)];
}
});
boot.bind(new InetSocketAddress(port)).sync().channel().closeFuture().await();
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
group.shutdownGracefully();
}
}
protected static Channel createAcceptorChannel(
final ChannelType channelType,
final InetSocketAddress localAddress,
final MessageHandler handler) {
final Bootstrap serverBootstrap = ServerUDPBootstrapFactory.createServerBootstrap(channelType);
serverBootstrap
.option(ChannelOption.SO_REUSEADDR, false)
.handler(
new ChannelInitializer<DatagramChannel>() {
@Override
protected void initChannel(final DatagramChannel ch) throws Exception {
final ChannelPipeline pipeline = ch.pipeline();
pipeline.addLast("messageDecoder", handler);
// pipeline.addLast("handler", serverHandler);
}
});
try {
ChannelFuture channelFuture =
serverBootstrap.bind(new InetSocketAddress(localAddress.getPort())).sync();
// channelFuture.channel().closeFuture().awaitUninterruptibly();//.awaitUninterruptibly();
channelFuture.awaitUninterruptibly();
if (channelFuture.isSuccess()) {
return channelFuture.channel();
} else {
}
} catch (InterruptedException e) {
// eventLoopGroup.shutdownGracefully();
// System.exit(-1);
}
return null;
}
