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.gxkj.demo.netty.proxy.HexDumpProxyFrontendHandler.java

License:Apache License

@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
    final Channel inboundChannel = ctx.channel();

    // Start the connection attempt.
    Bootstrap b = new Bootstrap();
    b.group(inboundChannel.eventLoop()).channel(ctx.channel().getClass())
            .handler(new HexDumpProxyBackendHandler(inboundChannel)).option(ChannelOption.AUTO_READ, false);

    ChannelFuture f = b.connect(remoteHost, remotePort);
    outboundChannel = f.channel();
    f.addListener(new ChannelFutureListener() {
        @Override/* w w w  . ja v a2  s  . com*/
        public void operationComplete(ChannelFuture future) throws Exception {
            if (future.isSuccess()) {
                // connection complete start to read first data
                inboundChannel.read();
            } else {
                // Close the connection if the connection attempt has failed.
                inboundChannel.close();
            }
        }
    });
}

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From source file:com.gxkj.demo.netty.proxy.HexDumpProxyFrontendHandler.java

License:Apache License

@Override
public void channelRead(final ChannelHandlerContext ctx, Object msg) throws Exception {
    if (outboundChannel.isActive()) {
        outboundChannel.writeAndFlush(msg).addListener(new ChannelFutureListener() {
            @Override//from  w  w  w.j a va2  s  .  c om
            public void operationComplete(ChannelFuture future) throws Exception {
                if (future.isSuccess()) {
                    // was able to flush out data, start to read the next chunk
                    ctx.channel().read();
                } else {
                    future.channel().close();
                }
            }
        });
    }
}

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From source file:com.hazelcast.openshift.TunnelClientAcceptor.java

License:Open Source License

private Channel createRemoteChannel(Channel socket) throws Exception {
    Bootstrap bootstrap = createBootstrap(socket);
    ChannelFuture connectFuture = bootstrap.connect(forwardHost, forwardPort);
    ChannelFuture future = connectFuture.sync();
    if (!future.isSuccess()) {
        return null;
    }/*from   ww  w .  ja  v a 2s.c o m*/

    return future.channel();
}

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From source file:com.hazelcast.simulator.protocol.connector.AbstractServerConnector.java

License:Open Source License

@Override
public void start() {
    messageQueueThread.start();/*from  www  .  j a v  a2s .  c o m*/

    ServerBootstrap bootstrap = getServerBootstrap();
    ChannelFuture future = bootstrap.bind().syncUninterruptibly();
    channel = future.channel();

    LOGGER.info(format("ServerConnector %s listens on %s", localAddress, channel.localAddress()));
}

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From source file:com.hazelcast.simulator.protocol.connector.ClientConnector.java

License:Open Source License

public void start() {
    Bootstrap bootstrap = getBootstrap();
    ChannelFuture future = bootstrap.connect().syncUninterruptibly();
    channel = future.channel();

    LOGGER.info(format("ClientConnector %s -> %s sends to %s", localAddress, remoteAddress,
            channel.remoteAddress()));//w  w  w.  j a  v  a 2 s.  c om
}

---

From source file:com.hazelcast.simulator.protocol.handler.ConnectionHandler.java

License:Open Source License

@Override
public void channelRead(ChannelHandlerContext ctx, Object obj) throws Exception {
    if (!(obj instanceof ByteBuf)) {
        return;/*from  w  w  w .j ava 2 s.c om*/
    }

    ByteBuf buf = (ByteBuf) obj;
    if (buf.readableBytes() < MINIMUM_BYTE_BUFFER_SIZE) {
        return;
    }

    if (!isSimulatorMessage(buf) && !isResponse(buf)) {
        LOGGER.warn(format("Invalid connection from %s (no magic bytes found)", ctx.channel().remoteAddress()));
        ctx.close();
        return;
    }

    // the connection is valid so we remove this handler and forward the buffer to the pipeline
    LOGGER.info(format("Valid connection from %s (magic bytes found)", ctx.channel().remoteAddress()));
    isConnectionValid.countDown();
    ctx.pipeline().remove(this);
    ctx.fireChannelRead(obj);

    ctx.channel().closeFuture().addListener(new ChannelFutureListener() {
        @Override
        public void operationComplete(ChannelFuture future) throws Exception {
            connectionListener.disconnected(future.channel());
        }
    });

    connectionListener.connected(ctx.channel());
}

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From source file:com.hazelcast.simulator.protocol.handler.ConnectionListenerHandler.java

License:Open Source License

@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
    ctx.channel().closeFuture().addListener(new ChannelFutureListener() {
        @Override//  w w  w.  jav a2s.co  m
        public void operationComplete(ChannelFuture future) throws Exception {
            connectionListener.disconnected(future.channel());
        }
    });

    connectionListener.connected(ctx.channel());
}

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From source file:com.heelenyc.research.netty.basic.TimeClient.java

License:Apache License

/**
 * @param port//  w  ww.  j a  v  a2 s  . co  m
 * @param host
 * @throws Exception
 */
public void connect(int port, String host) throws Exception {
    // ?NIO
    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 {
                        ch.pipeline().addLast(new TimeClientHandler());
                    }
                });

        // ??
        ChannelFuture f = b.connect(host, port).sync();

        // 
        f.channel().closeFuture().sync();
    } finally {
        // NIO
        group.shutdownGracefully();
    }
}

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From source file:com.heliosapm.streams.onramp.OnRampBoot.java

License:Apache License

/**
 * Creates a new OnRampBoot//from  w  w w  .  j  a  va  2 s  .  c  o m
 * @param appConfig  The application configuration
 */
public OnRampBoot(final Properties appConfig) {
    final String jmxmpUri = ConfigurationHelper.getSystemThenEnvProperty("jmx.jmxmp.uri",
            "jmxmp://0.0.0.0:1893", appConfig);
    JMXHelper.fireUpJMXMPServer(jmxmpUri);
    MessageForwarder.initialize(appConfig);
    port = ConfigurationHelper.getIntSystemThenEnvProperty("onramp.network.port", 8091, appConfig);
    bindInterface = ConfigurationHelper.getSystemThenEnvProperty("onramp.network.bind", "0.0.0.0", appConfig);
    bindSocket = new InetSocketAddress(bindInterface, port);
    workerThreads = ConfigurationHelper.getIntSystemThenEnvProperty("onramp.network.worker_threads", CORES * 2,
            appConfig);
    connectTimeout = ConfigurationHelper.getIntSystemThenEnvProperty("onramp.network.sotimeout", 0, appConfig);
    backlog = ConfigurationHelper.getIntSystemThenEnvProperty("onramp.network.backlog", 3072, appConfig);
    writeSpins = ConfigurationHelper.getIntSystemThenEnvProperty("onramp.network.writespins", 16, appConfig);
    recvBuffer = ConfigurationHelper.getIntSystemThenEnvProperty("onramp.network.recbuffer", 43690, appConfig);
    sendBuffer = ConfigurationHelper.getIntSystemThenEnvProperty("onramp.network.sendbuffer", 8192, appConfig);
    disableEpoll = ConfigurationHelper.getBooleanSystemThenEnvProperty("onramp.network.epoll.disable", false,
            appConfig);
    async = ConfigurationHelper.getBooleanSystemThenEnvProperty("onramp.network.async_io", true, appConfig);
    tcpNoDelay = ConfigurationHelper.getBooleanSystemThenEnvProperty("onramp.network.tcp_no_delay", true,
            appConfig);
    keepAlive = ConfigurationHelper.getBooleanSystemThenEnvProperty("onramp.network.keep_alive", true,
            appConfig);
    reuseAddress = ConfigurationHelper.getBooleanSystemThenEnvProperty("onramp.network.reuse_address", true,
            appConfig);
    tcpPipelineFactory = new PipelineFactory(appConfig);
    udpPipelineFactory = new UDPPipelineFactory();
    tcpServerBootstrap.handler(new LoggingHandler(getClass(), LogLevel.INFO));
    tcpServerBootstrap.childHandler(tcpPipelineFactory);
    // Set the child options
    tcpServerBootstrap.childOption(ChannelOption.ALLOCATOR, BufferManager.getInstance().getAllocator());
    tcpServerBootstrap.childOption(ChannelOption.TCP_NODELAY, tcpNoDelay);
    tcpServerBootstrap.childOption(ChannelOption.SO_KEEPALIVE, keepAlive);
    tcpServerBootstrap.childOption(ChannelOption.SO_RCVBUF, recvBuffer);
    tcpServerBootstrap.childOption(ChannelOption.SO_SNDBUF, sendBuffer);
    tcpServerBootstrap.childOption(ChannelOption.WRITE_SPIN_COUNT, writeSpins);
    // Set the server options
    tcpServerBootstrap.option(ChannelOption.SO_BACKLOG, backlog);
    tcpServerBootstrap.option(ChannelOption.SO_REUSEADDR, reuseAddress);
    tcpServerBootstrap.option(ChannelOption.SO_RCVBUF, recvBuffer);
    tcpServerBootstrap.option(ChannelOption.SO_TIMEOUT, connectTimeout);

    final StringBuilder tcpUri = new StringBuilder("tcp");
    final StringBuilder udpUri = new StringBuilder("udp");
    if (IS_LINUX && !disableEpoll) {
        bossExecutorThreadFactory = new ExecutorThreadFactory("EpollServerBoss", true);
        bossGroup = new EpollEventLoopGroup(1, (ThreadFactory) bossExecutorThreadFactory);
        workerExecutorThreadFactory = new ExecutorThreadFactory("EpollServerWorker", true);
        workerGroup = new EpollEventLoopGroup(workerThreads, (ThreadFactory) workerExecutorThreadFactory);
        tcpChannelType = EpollServerSocketChannel.class;
        udpChannelType = EpollDatagramChannel.class;
        tcpUri.append("epoll");
        udpUri.append("epoll");
    } else {
        bossExecutorThreadFactory = new ExecutorThreadFactory("NioServerBoss", true);
        bossGroup = new NioEventLoopGroup(1, bossExecutorThreadFactory);
        workerExecutorThreadFactory = new ExecutorThreadFactory("NioServerWorker", true);
        workerGroup = new NioEventLoopGroup(workerThreads, workerExecutorThreadFactory);
        tcpChannelType = NioServerSocketChannel.class;
        udpChannelType = NioDatagramChannel.class;
        tcpUri.append("nio");
        udpUri.append("nio");
    }

    tcpUri.append("://").append(bindInterface).append(":").append(port);
    udpUri.append("://").append(bindInterface).append(":").append(port);
    URI u = null;
    try {
        u = new URI(tcpUri.toString());
    } catch (URISyntaxException e) {
        log.warn("Failed TCP server URI const: [{}]. Programmer Error", tcpUri, e);
    }
    tcpServerURI = u;
    try {
        u = new URI(udpUri.toString());
    } catch (URISyntaxException e) {
        log.warn("Failed UDP server URI const: [{}]. Programmer Error", udpUri, e);
    }
    udpServerURI = u;

    log.info(">>>>> Starting OnRamp TCP Listener on [{}]...", tcpServerURI);
    log.info(">>>>> Starting OnRamp UDP Listener on [{}]...", udpServerURI);
    final ChannelFuture cf = tcpServerBootstrap.channel(tcpChannelType).group(bossGroup, workerGroup)
            .bind(bindSocket).awaitUninterruptibly()
            .addListener(new GenericFutureListener<Future<? super Void>>() {
                public void operationComplete(final Future<? super Void> f) throws Exception {
                    log.info("<<<<< OnRamp TCP Listener on [{}] Started", tcpServerURI);
                };
            }).awaitUninterruptibly();
    final ChannelFuture ucf = udpBootstrap.channel(udpChannelType).group(workerGroup)
            .option(ChannelOption.SO_BROADCAST, true).handler(new UDPPipelineFactory()).bind(bindSocket)
            .awaitUninterruptibly().addListener(new GenericFutureListener<Future<? super Void>>() {
                public void operationComplete(final Future<? super Void> f) throws Exception {
                    log.info("<<<<< OnRamp UDP Listener on [{}] Started", udpServerURI);
                };
            }).awaitUninterruptibly();

    tcpServerChannel = cf.channel();
    udpServerChannel = ucf.channel();
    tcpCloseFuture = tcpServerChannel.closeFuture();
    udpCloseFuture = udpServerChannel.closeFuture();
    Runtime.getRuntime().addShutdownHook(shutdownHook);

}

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From source file:com.heliosapm.streams.tracing.writers.NetWriter.java

License:Apache License

/**
 * Attempts to connect to the specified host/port and updates the channel tracking structures accordingly
 * @param uri The <b><code>host:port</code></b> pair
 *//*from w w w  . j  a v a 2  s  . co  m*/
protected void connect(final String uri) {
    String _host = null;
    int _port = -1;
    try {
        final String[] hostPort = StringHelper.splitString(uri, ':', true);
        _host = hostPort[0];
        _port = Integer.parseInt(hostPort[1]);
    } catch (Exception ex) {
        log.warn("Invalid Remote URI [{}]", uri);
    }
    final ChannelFuture cf = bootstrap.connect(_host, _port);
    cf.addListener(new GenericFutureListener<Future<Void>>() {
        @Override
        public void operationComplete(final Future<Void> f) throws Exception {
            if (f.isSuccess()) {
                final Channel channel = cf.channel();
                ChannelFuture closeFuture = channel.closeFuture();
                closeFutures.put(uri, closeFuture);
                disconnected.remove(new DelayedReconnect(uri));
                closeFuture.addListener(new GenericFutureListener<Future<? super Void>>() {
                    @Override
                    public void operationComplete(final Future<? super Void> future) throws Exception {
                        closeFutures.remove(uri);
                        if (group.isShutdown() || group.isShuttingDown() || group.isTerminated()) {
                            /* No Op */
                        } else {
                            final DelayedReconnect dc = new DelayedReconnect(uri);
                            if (!disconnected.contains(dc)) {
                                disconnected.add(dc);
                            }
                        }
                        channels.remove(channel); // may have been removed already
                        fireDisconnected();
                    }
                });
                channels.add(channel);
                fireConnected();
                log.info("Channel [{}] connected to [{}]", channel, uri);
            } else {
                final DelayedReconnect dc = new DelayedReconnect(uri);
                if (!disconnected.contains(dc)) {
                    disconnected.add(dc);
                }
                log.warn("Channel failed to connect to [{}]", uri, f.cause());
            }
        }
    });
}

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