Examples of io.netty.channel.socket.nio.NioServerSocketChannelFactory

io.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 (these two steps so far is usually done using {@link ChannelGroup#close()})
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. @apiviz.landmark


  public void start() {
    int port = ErraiConfigAttribs.WEB_SOCKET_PORT.getInt(svc.getConfiguration());


    // Configure the server.
    final ServerBootstrap bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(
            Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));


    final WebSocketServerPipelineFactory factory = new WebSocketServerPipelineFactory(svc);


    // Set up the event pipeline factory.

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    }


    public void run() {
        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


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

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        this.port = port;
    }


    public void run() {
        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(
                Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));


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

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        this.port = port;
    }


    public void run() {
        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(
                Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));


        // bootstrap.setOption("child.tcpNoDelay", true);


        // Set up the event pipeline factory.

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        this.port = port;
    }


    public void run() {
        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(
                Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));


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

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    }


    public void run() {
        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


        // Configure the pipeline factory.
        bootstrap.setPipelineFactory(new TelnetServerPipelineFactory());

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    }


    public void run() {
        // 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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    }


    public void run() {
        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


        // Configure the pipeline factory.
        bootstrap.setPipelineFactory(new SecureChatServerPipelineFactory());

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    }


    public void run() {
        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


        // Set up the pipeline factory.
        bootstrap.setPipelineFactory(new ChannelPipelineFactory() {

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    }


    public void run() {
        // Configure the server.
        ServerBootstrap bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


        // Set up the event pipeline factory.
        bootstrap.setPipelineFactory(new ChannelPipelineFactory() {

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io.netty.example.echo.EchoServer

io.netty.example.factorial.FactorialServer

io.netty.example.http.file.HttpStaticFileServer

io.netty.example.http.snoop.HttpSnoopServer

io.netty.example.http.upload.HttpUploadServer

io.netty.example.http.websocketx.autobahn.AutobahnServer

io.netty.example.http.websocketx.server.WebSocketServer

io.netty.example.http.websocketx.sslserver.WebSocketSslServer

io.netty.example.localtime.LocalTimeServer

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Examples of io.netty.channel.socket.nio.NioServerSocketChannelFactory

How threads work

Boss threads

Worker threads

Life cycle of threads and graceful shutdown

Related Classes of io.netty.channel.socket.nio.NioServerSocketChannelFactory