Example usage for io.netty.channel ChannelFuture channel

Introduction

In this page you can find the example usage for io.netty.channel ChannelFuture channel.

Prototype

Channel channel();

Source Link

Document

Returns a channel where the I/O operation associated with this future takes place.

Usage

From source file:com.book.netty5.client.NettyClient.java

License:Apache License

public void connect(int port, String host) throws Exception {

    // ?NIO//from   w w w .ja v a 2 s  .  c om

    try {
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).option(ChannelOption.TCP_NODELAY, true)
                .handler(new ChannelInitializer<SocketChannel>() {

                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new NettyMessageDecoder(1024 * 1024, 4, 4));
                        ch.pipeline().addLast("MessageEncoder", new NettyMessageEncoder());
                        ch.pipeline().addLast("readTimeoutHandler", new ReadTimeoutHandler(50));
                        ch.pipeline().addLast("LoginAuthHandler", new LoginAuthReqHandler());
                        ch.pipeline().addLast("HeartBeatHandler", new HeartBeatReqHandler());
                    }
                });
        // ??
        ChannelFuture future = b.connect(new InetSocketAddress(host, port),
                new InetSocketAddress(NettyConstant.LOCALIP, NettyConstant.LOCAL_PORT)).sync();
        future.channel().closeFuture().sync();
    } finally {
        // ????????
        executor.execute(new Runnable() {
            public void run() {
                try {
                    TimeUnit.SECONDS.sleep(1);
                    try {
                        connect(NettyConstant.PORT, NettyConstant.REMOTEIP);// ???
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        });
    }
}

---

From source file:com.bow.demo.module.netty.demo.echo.EchoClient.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.git
    final SslContext sslCtx;
    if (SSL) {//from  www  . j  a va  2  s  .  com
        sslCtx = SslContextBuilder.forClient().trustManager(InsecureTrustManagerFactory.INSTANCE).build();
    } else {
        sslCtx = null;
    }

    // Configure the client.
    EventLoopGroup group = new NioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).option(ChannelOption.TCP_NODELAY, true)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline p = ch.pipeline();
                        if (sslCtx != null) {
                            p.addLast(sslCtx.newHandler(ch.alloc(), HOST, PORT));
                        }
                        //p.addLast(new LoggingHandler(LogLevel.INFO));
                        p.addLast(new EchoClientHandler());
                    }
                });

        // Start the client.
        ChannelFuture f = b.connect(HOST, PORT).sync();

        // Wait until the connection is closed.
        f.channel().closeFuture().sync();
    } finally {
        // Shut down the event loop to terminate all threads.
        group.shutdownGracefully();
    }
}

---

From source file:com.bow.demo.module.netty.demo.echo.EchoServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {/*w w  w  . j a  v a 2 s  .co m*/
        SelfSignedCertificate ssc = new SelfSignedCertificate();
        sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
    } else {
        sslCtx = null;
    }

    // Configure the server.
    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 100).handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline p = ch.pipeline();
                        if (sslCtx != null) {
                            p.addLast(sslCtx.newHandler(ch.alloc()));
                        }
                        //p.addLast(new LoggingHandler(LogLevel.INFO));
                        p.addLast(new EchoServerHandler());
                    }
                });

        // Start the server.
        ChannelFuture f = b.bind(PORT).sync();

        // Wait until the server socket is closed.
        f.channel().closeFuture().sync();
    } finally {
        // Shut down all event loops to terminate all threads.
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:com.caocao.nio.client.EchoClient.java

License:Apache License

public static void main(String[] args) throws Exception {

    // Configure the client.
    EventLoopGroup group = new NioEventLoopGroup();
    try {/*from w w w .j  a va 2s . c om*/
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).option(ChannelOption.TCP_NODELAY, true)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline p = ch.pipeline();
                        p.addLast(new MsgDecoder());
                        p.addLast(new MsgEncoder());
                        p.addLast(new EchoClientHandler());
                    }
                });

        // Start the client.
        ChannelFuture f = b.connect("127.0.0.1", 80).sync();

        // Wait until the connection is closed.
        f.channel().closeFuture().sync();
    } finally {
        // Shut down the event loop to terminate all threads.
        group.shutdownGracefully();
    }
}

---

From source file:com.caocao.nio.server.NettyServer.java

License:Apache License

public void initAndStart() {
    System.out.println("port:" + port);
    // Configure the server.
    bossGroup = new NioEventLoopGroup(Runtime.getRuntime().availableProcessors() * 2);
    workerGroup = new NioEventLoopGroup(Runtime.getRuntime().availableProcessors() * 2);
    try {/*ww  w.  j a v a2s  . c  om*/
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 128).option(ChannelOption.SO_KEEPALIVE, true)
                .option(ChannelOption.TCP_NODELAY, true).option(ChannelOption.SO_SNDBUF, 5 * 1024)
                .option(ChannelOption.SO_SNDBUF, 5 * 1024)
                .option(ChannelOption.RCVBUF_ALLOCATOR, new AdaptiveRecvByteBufAllocator(40, 64, 1024))
                .option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT)
                .handler(new LoggingHandler(LogLevel.INFO)).childHandler(new CustomerInitializer());

        // Start the server.
        ChannelFuture f = b.bind(port).sync();

        // Wait until the server socket is closed.
        f.channel().closeFuture().sync();
    } catch (InterruptedException e) {
        logger.error("netty??", e);
    } finally {
        // Shut down all event loops to terminate all threads.
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:com.caricah.iotracah.server.netty.channelgroup.IotChannelGroupFuture.java

License:Apache License

/**
 * Creates a new instance.//from  w  ww .  j  av  a 2s. co  m
 */
IotChannelGroupFuture(ChannelGroup group, Collection<ChannelFuture> futures, EventExecutor executor) {
    super(executor);
    if (group == null) {
        throw new NullPointerException("group");
    }
    if (futures == null) {
        throw new NullPointerException("futures");
    }

    this.group = group;

    Map<Channel, ChannelFuture> futureMap = new LinkedHashMap<Channel, ChannelFuture>();
    for (ChannelFuture f : futures) {
        futureMap.put(f.channel(), f);
    }

    this.futures = Collections.unmodifiableMap(futureMap);

    for (ChannelFuture f : this.futures.values()) {
        f.addListener(childListener);
    }

    // Done on arrival?
    if (this.futures.isEmpty()) {
        setSuccess0();
    }
}

---

From source file:com.caricah.iotracah.server.netty.ServerImpl.java

License:Apache License

/**
 * The @link configure method is responsible for starting the implementation server processes.
 * The implementation should return once the server has started this allows
 * the launcher to maintain the life of the application.
 *
 * @throws UnRetriableException/* ww w .  j a v  a2  s.com*/
 */
public void initiate() throws UnRetriableException {

    log.info(" configure : initiating the netty server.");

    try {

        int countOfAvailableProcessors = Runtime.getRuntime().availableProcessors() + 1;

        if (Epoll.isAvailable()) {
            bossEventLoopGroup = new EpollEventLoopGroup(2, getExecutorService());
            workerEventLoopGroup = new EpollEventLoopGroup(countOfAvailableProcessors, getExecutorService());

        } else {
            bossEventLoopGroup = new NioEventLoopGroup(2, getExecutorService());
            workerEventLoopGroup = new NioEventLoopGroup(countOfAvailableProcessors, getExecutorService());
        }

        //Initialize listener for TCP
        ServerBootstrap tcpBootstrap = new ServerBootstrap();
        tcpBootstrap.option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
        tcpBootstrap.childOption(ChannelOption.WRITE_BUFFER_HIGH_WATER_MARK, 32 * 1024);
        tcpBootstrap.childOption(ChannelOption.WRITE_BUFFER_LOW_WATER_MARK, 8 * 1024);

        tcpBootstrap = tcpBootstrap.group(bossEventLoopGroup, workerEventLoopGroup);

        if (Epoll.isAvailable()) {
            tcpBootstrap = tcpBootstrap.channel(EpollServerSocketChannel.class);
        } else {
            tcpBootstrap = tcpBootstrap.channel(NioServerSocketChannel.class);
        }

        tcpBootstrap = tcpBootstrap.handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(getServerInitializer(this, getConnectionTimeout()));

        ChannelFuture tcpChannelFuture = tcpBootstrap.bind(getTcpPort()).sync();
        tcpChannel = tcpChannelFuture.channel();

        if (isSslEnabled()) {
            //Initialize listener for SSL
            ServerBootstrap sslBootstrap = new ServerBootstrap();
            sslBootstrap.option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
            sslBootstrap.childOption(ChannelOption.WRITE_BUFFER_HIGH_WATER_MARK, 32 * 1024);
            sslBootstrap.childOption(ChannelOption.WRITE_BUFFER_LOW_WATER_MARK, 8 * 1024);

            sslBootstrap = sslBootstrap.group(bossEventLoopGroup, workerEventLoopGroup);

            if (Epoll.isAvailable()) {
                sslBootstrap = sslBootstrap.channel(EpollServerSocketChannel.class);
            } else {
                sslBootstrap = sslBootstrap.channel(NioServerSocketChannel.class);
            }

            sslBootstrap = sslBootstrap.handler(new LoggingHandler(LogLevel.INFO))
                    .childHandler(getServerInitializer(this, getConnectionTimeout(), getSslHandler()));

            ChannelFuture sslChannelFuture = sslBootstrap.bind(getSslPort()).sync();
            sslChannel = sslChannelFuture.channel();
        }

    } catch (InterruptedException e) {

        log.error(" configure : Initialization issues ", e);

        throw new UnRetriableException(e);

    }

}

---

From source file:com.cat.netty.file.FileServer.java

License:Apache License

public void run(int port) throws Exception {
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {/*from w  w w  .  j a v  a 2 s .c o  m*/
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 100).childHandler(new ChannelInitializer<SocketChannel>() {
                    /*
                     * (non-Javadoc)
                     *
                     * @see
                     * io.netty.channel.ChannelInitializer#initChannel(io
                     * .netty.channel.Channel)
                     */
                    public void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new StringEncoder(CharsetUtil.UTF_8),
                                new LineBasedFrameDecoder(1024), new StringDecoder(CharsetUtil.UTF_8),
                                new FileServerHandler());
                    }
                });
        ChannelFuture f = b.bind(port).sync();
        System.out.println("Server start at port : " + port);
        f.channel().closeFuture().sync();
    } finally {
        // ?
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:com.cdg.study.netty.discard.DiscardServer.java

License:Open Source License

public static void main(String[] args) throws Exception {
    EventLoopGroup bossGroup = new NioEventLoopGroup(1); // bossGroup 1?  ??
    EventLoopGroup workerGroup = new NioEventLoopGroup(); // default *2  ??
    try {// ww w  .  j ava  2s  .c o  m
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .handler(new LoggingHandler(LogLevel.INFO)).childHandler(new DiscardServerHandler());

        ChannelFuture f = b.bind(8010).sync();

        System.err.println("Ready for 0.0.0.0:8010");

        f.channel().closeFuture().sync();
    } finally {
        workerGroup.shutdownGracefully();
        bossGroup.shutdownGracefully();
    }
}

---

From source file:com.cdg.study.netty.echo.EchoServer.java

License:Open Source License

public static void main(String[] args) throws Exception {
    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {//from w w  w. j  av  a 2 s  .co m
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .childHandler(new EchoServerHandler());

        ChannelFuture f = b.bind(8011).sync();

        f.channel().closeFuture().sync();
    } finally {
        workerGroup.shutdownGracefully();
        bossGroup.shutdownGracefully();
    }
}

---

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