Examples of org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory

Package org.jboss.netty.channel.socket.nio

Examples of org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory

org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory
A {@link ServerSocketChannelFactory} which creates a server-side NIO-based{@link ServerSocketChannel}. It utilizes the non-blocking I/O mode which was introduced with NIO to serve many number of concurrent connections efficiently.
How threads work

There are two types of threads in a {@link NioServerSocketChannelFactory}; one is boss thread and the other is worker thread.
Boss threads

Each bound {@link ServerSocketChannel} has its own boss thread.For example, if you opened two server ports such as 80 and 443, you will have two boss threads. A boss thread accepts incoming connections until the port is unbound. Once a connection is accepted successfully, the boss thread passes the accepted {@link Channel} to one of the workerthreads that the {@link NioServerSocketChannelFactory} manages.
Worker threads

One {@link NioServerSocketChannelFactory} can have one or more workerthreads. A worker thread performs non-blocking read and write for one or more {@link Channel}s in a non-blocking mode.
Life cycle of threads and graceful shutdown

All threads are acquired from the {@link Executor}s which were specified when a {@link NioServerSocketChannelFactory} was created. Boss threads areacquired from the {@code bossExecutor}, and worker threads are acquired from the {@code workerExecutor}. Therefore, you should make sure the specified {@link Executor}s are able to lend the sufficient number of threads. It is the best bet to specify {@linkplain Executors#newCachedThreadPool() a cached thread pool}.
Both boss and worker threads are acquired lazily, and then released when there's nothing left to process. All the related resources such as {@link Selector} are also released when the boss and worker threads arereleased. Therefore, to shut down a service gracefully, you should do the following:
1. unbind all channels created by the factory,
2. close all child channels accepted by the unbound channels, and
3. call {@link #releaseExternalResources()}.
Please make sure not to shut down the executor until all channels are closed. Otherwise, you will end up with a {@link RejectedExecutionException}and the related resources might not be released properly. @author The Netty Project (netty-dev@lists.jboss.org) @author Trustin Lee (tlee@redhat.com) @version $Rev: 536 $, $Date: 2008-11-28 20:18:21 +0900 (Fri, 28 Nov 2008) $ @apiviz.landmark

        
        if (maxWorkers == 0) {
          maxWorkers = Runtime.getRuntime().availableProcessors();
        }
    
        ChannelFactory factory = new NioServerSocketChannelFactory(this.nettyPool, this.nettyPool, maxWorkers);
        
        ServerBootstrap bootstrap = new ServerBootstrap(factory);
        this.channelHandler = createChannelPipelineFactory(config, storageManager);
        bootstrap.setPipelineFactory(channelHandler);
        if (inputBufferSize != 0) {

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    public synchronized NettyWebServer start() {
        ExecutorService exec1 = Executors.newSingleThreadExecutor();
        executorServices.add(exec1);
        ExecutorService exec2 = Executors.newSingleThreadExecutor();
        executorServices.add(exec2);
        bootstrap.setFactory(new NioServerSocketChannelFactory(exec1, exec2, 1));
        channel = bootstrap.bind(socketAddress);
        return this;
    }

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public class FactorialServer {


    public static void main(String[] args) throws Exception {
        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


        // Set up the event pipeline factory.
        bootstrap.setPipelineFactory(new FactorialServerPipelineFactory());

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    {
        Executor executor = Executors.newFixedThreadPool(200);


        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(
                    executor,
                    executor));


        bootstrap.setPipelineFactory(
               new RPCServerSessionPipelineFactory( new RPCServerMixinPipelineFactory(executor)));

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  public AHessianJmxServer(MBeanServer mbeanServer, String ipFilter, String serviceDiscoveryName, int port, Logger log)
  {
    Executor executor = Executors.newFixedThreadPool(10);


    // Configure the server.
    ServerBootstrap bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(executor, executor));


    bootstrap
        .setPipelineFactory(new AHessianServerPipelineFactory(executor, new IpFilterRuleHandler(new IpFilterRuleList(ipFilter)), mbeanServer, log));


    int serverPort = port;

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  public static void main(String[] args)
  {
    int port = Integer.parseInt(args[0]);
    
    ChannelFactory factory =
            new NioServerSocketChannelFactory(
                    Executors.newCachedThreadPool(),
                    Executors.newCachedThreadPool());


        ServerBootstrap bootstrap = new ServerBootstrap(factory);

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    if(maxThreads <= 0) {
      server = new NettyServer(responder,
              new InetSocketAddress(bindAddress, port));
    } else {
      server = new NettyServer(responder, new InetSocketAddress(bindAddress, port),
              new NioServerSocketChannelFactory(
                      Executors.newCachedThreadPool(),
                      Executors.newFixedThreadPool(maxThreads)));
    }
    connectionCountUpdater = Executors.newSingleThreadScheduledExecutor();
    server.start();

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    /**
     * {@inheritDoc}
     */
    public void start(int port) throws IOException {
        factory = new NioServerSocketChannelFactory();
        ServerBootstrap bootstrap = new ServerBootstrap(factory);
        bootstrap.setOption("receiveBufferSize", 128 * 1024);
        bootstrap.setOption("tcpNoDelay", true);
        bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
            public ChannelPipeline getPipeline() throws Exception {

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    {
    case LOCAL: channelFactory = new DefaultLocalServerChannelFactory(); break;
    case NIO:
    {
      channelFactory =
          new NioServerSocketChannelFactory(Executors.newCachedThreadPool(),
                                            Executors.newCachedThreadPool());
      break;
    }
    case OIO:
    {

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      if (bossExecutor == null) { bossExecutor = Executors.newCachedThreadPool(); }
      ExecutorService workerExecutor = config.workerExecutor();
      if (workerExecutor == null) { workerExecutor = Executors.newCachedThreadPool(); }
      
        final ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(bossExecutor, workerExecutor));


        bootstrap.setPipelineFactory(pipelineFactory);
        return bootstrap;
    }

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Examples of org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory

How threads work

Boss threads

Worker threads

Life cycle of threads and graceful shutdown

Related Classes of org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory