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

   public void startTransport(int idleTimeout, boolean tcpNoDelay, int sendBufSize, int recvBufSize, TypedProperties typedProps) {
      InetSocketAddress address = new InetSocketAddress(getHost(), getPort());
      Executor masterExecutor = Executors.newCachedThreadPool();
      Executor workerExecutor = Executors.newCachedThreadPool();


      NioServerSocketChannelFactory factory = new NioServerSocketChannelFactory(masterExecutor, workerExecutor, workerThreads());


      // Configure the server.
      ServerBootstrap bootstrap = new ServerBootstrap(factory);


      // Set up the event pipeline factory.

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    } catch (ClassCastException e) {
      LOG.warn("Netty worker thread pool is not of type ThreadPoolExecutor", e);
    }
    LOG.info("Netty starting up with a maximum of " + maximumPoolSize +
        " worker threads");
    channelFactory = new NioServerSocketChannelFactory(
        Executors.newCachedThreadPool(bossFactory),
        workerThreadPool, maximumPoolSize);
  }

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         else
         {
            threadsToUse = this.nioRemotingThreads;
         }


         channelFactory = new NioServerSocketChannelFactory(bossExecutor, workerExecutor, threadsToUse);
      }
      else
      {
         channelFactory = new OioServerSocketChannelFactory(bossExecutor, workerExecutor);
      }

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         else
         {
            threadsToUse = this.nioRemotingThreads;
         }


         channelFactory = new NioServerSocketChannelFactory(bossExecutor, workerExecutor, threadsToUse);
      }
      else
      {
         channelFactory = new OioServerSocketChannelFactory(bossExecutor, workerExecutor);
      }

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        if(host == null || port == null || "".equals(host.trim()) || port == 0) {
            throw new JBNodeException("Both host and port must be specified.");
        }


        ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool(), 10));

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  public void test() throws Exception {
    final CountDownLatch waitLatch = new CountDownLatch(1);
    server = new NettyServer(
        new SpecificResponder(Simple.class, new SimpleImpl(waitLatch)), 
        new InetSocketAddress(0), 
        new NioServerSocketChannelFactory
          (Executors.newCachedThreadPool(), Executors.newCachedThreadPool()), 
        new ExecutionHandler(Executors.newCachedThreadPool()));
    server.start();
    
    transceiver = new NettyTransceiver(new InetSocketAddress(

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public class TestNettyServerWithCompression extends TestNettyServer{




  protected static Server initializeServer(Responder responder) {
    ChannelFactory channelFactory = new NioServerSocketChannelFactory(
        Executors.newCachedThreadPool(),
        Executors.newCachedThreadPool()
    );
    return  new NettyServer(responder, new InetSocketAddress(0),
        channelFactory, new CompressionChannelPipelineFactory(),

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public class TestNettyServerWithSSL extends TestNettyServer{
  public static final String TEST_CERTIFICATE = "servercert.p12";
  public static final String TEST_CERTIFICATE_PASSWORD = "s3cret";
  
  protected static Server initializeServer(Responder responder) {
    ChannelFactory channelFactory = new NioServerSocketChannelFactory(
        Executors.newCachedThreadPool(),
        Executors.newCachedThreadPool()
    );
    return new NettyServer(responder, new InetSocketAddress(0),
        channelFactory, new SSLChannelPipelineFactory(),

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        ExecutorService bossExecutor = context.getExecutorServiceStrategy().newThreadPool(this, "NettyTCPBoss",
                configuration.getCorePoolSize(), configuration.getMaxPoolSize());
        ExecutorService workerExecutor = context.getExecutorServiceStrategy().newThreadPool(this, "NettyTCPWorker",
                configuration.getCorePoolSize(), configuration.getMaxPoolSize());


        channelFactory = new NioServerSocketChannelFactory(bossExecutor, workerExecutor);
        serverBootstrap = new ServerBootstrap(channelFactory);
        serverBootstrap.setPipelineFactory(new ServerPipelineFactory(this));
        serverBootstrap.setOption("child.keepAlive", configuration.isKeepAlive());
        serverBootstrap.setOption("child.tcpNoDelay", configuration.isTcpNoDelay());
        serverBootstrap.setOption("child.reuseAddress", configuration.isReuseAddress());

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    this.serviceName = name;
  }


  public void init(ChannelPipelineFactory pipeline) {
    this.factory =
        new NioServerSocketChannelFactory(Executors.newCachedThreadPool(),
            Executors.newCachedThreadPool());


    pipelineFactory = pipeline;
    bootstrap = new ServerBootstrap(factory);
    bootstrap.setPipelineFactory(pipelineFactory);

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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