Java ChannelOption类代码示例

import io.netty.channel.ChannelOption; //导入依赖的package包/类
@Override
public void connect(final InetSocketAddress socketAddress) {
    workerGroup = new NioEventLoopGroup(workerGroupThreads);
    Bootstrap bootstrap = new Bootstrap();
    try {
        bootstrap
            .group(workerGroup)
            .channel(NioSocketChannel.class)
            .option(ChannelOption.SO_KEEPALIVE, true)
            .option(ChannelOption.TCP_NODELAY, true)
            .handler(clientChannelInitializer);
    } catch (final Exception ex) {
        throw new ClientException(ex);
    }
    channel = bootstrap.connect(socketAddress.getAddress().getHostAddress(), socketAddress.getPort()).syncUninterruptibly().channel();
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
@Override
protected void initChannel(SocketChannel ch) throws Exception {
    try {
        ch.config().setOption(ChannelOption.TCP_NODELAY, true);
        ch.config().setOption(ChannelOption.IP_TOS, 0x18);
    } catch (ChannelException ex) {
        // IP_TOS not supported by platform, ignore
    }
    ch.config().setAllocator(PooledByteBufAllocator.DEFAULT);
    
    PacketRegistry r = new PacketRegistry();

    ch.pipeline().addLast("idleStateHandler", new IdleStateHandler(0, 0, 30));
    ch.pipeline().addLast(new HttpServerCodec());
    ch.pipeline().addLast(new HttpObjectAggregator(65536));
    ch.pipeline().addLast(new WebSocketHandler());
    ch.pipeline().addLast(new PacketDecoder(r));
    ch.pipeline().addLast(new PacketEncoder(r));
    ch.pipeline().addLast(mExecutorGroup, "serverHandler", new ClientHandler(mServer));
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
@Override
protected FastdfsPool newPool(InetSocketAddress addr) {
    if (LOG.isDebugEnabled()) {
        LOG.debug("channel pool created : {}", addr);
    }

    Bootstrap bootstrap = new Bootstrap().channel(NioSocketChannel.class).group(loopGroup);
    bootstrap.remoteAddress(addr);
    bootstrap.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, (int) connectTimeout);
    bootstrap.option(ChannelOption.TCP_NODELAY, true);
    bootstrap.option(ChannelOption.SO_KEEPALIVE, true);
    return new FastdfsPool(
            bootstrap,
            readTimeout,
            idleTimeout,
            maxConnPerHost
    );
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
public void start() {
    bootstrap.group(group).channel(NioSocketChannel.class);
    bootstrap.option(ChannelOption.TCP_NODELAY, true);
    bootstrap.handler(new ChannelInitializer<SocketChannel>() {
        @Override
        public void initChannel(SocketChannel ch) throws Exception {
            //                ch.pipeline().addLast(new IdleStateHandler(1, 1, 5));
            ch.pipeline().addLast(new KyroMsgDecoder());
            ch.pipeline().addLast(new KyroMsgEncoder());
            ch.pipeline().addLast(new ClientHandler());
        }
    });

    new ScheduledThreadPoolExecutor(1).scheduleAtFixedRate(new Runnable() {
        @Override
        public void run() {
            scanResponseTable(3000);
        }
    }, 1000, 1000, TimeUnit.MILLISECONDS);
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
public static void main(String[] args) throws Exception {

        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup)
                .channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_REUSEADDR, true)
                .childHandler(new ChannelInitializer<NioSocketChannel>() {
                    @Override
                    protected void initChannel(NioSocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new SimpleServerHandler());
                    }
                });
        b.bind(8090).sync().channel().closeFuture().sync();
    }
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
protected AbstractNettyServer(String serverName) {
	this.serverName = Objects.requireNonNull(serverName, "server name");
	bootstrap = new ServerBootstrap();
	if (Epoll.isAvailable()) {
		bootstrap.option(ChannelOption.SO_BACKLOG, 1024).channel(EpollServerSocketChannel.class)
				.childOption(ChannelOption.SO_LINGER, 0).childOption(ChannelOption.SO_REUSEADDR, true)
				.childOption(ChannelOption.SO_KEEPALIVE, true);
		log.info(serverName + " epoll init");
	} else {
		bootstrap.channel(NioServerSocketChannel.class);
		log.info(serverName + " nio init");
	}
	bootstrap.group(bossGroup, workerGroup).option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT)
			.childOption(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT)
			.childOption(ChannelOption.TCP_NODELAY, true).childHandler(new ChannelInitializer<SocketChannel>() {

				@Override
				protected void initChannel(SocketChannel ch) throws Exception {
					initPipeline(ch.pipeline());
				}
			});
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
/**
 * Connect to remote servers.  We'll initiate the connection to
 * any nodes with a lower ID so that there will be a single connection
 * between each pair of nodes which we'll use symmetrically
 */
protected void startClients(RPCChannelInitializer channelInitializer) {
    final Bootstrap bootstrap = new Bootstrap();
    bootstrap.group(workerGroup)
    .channel(NioSocketChannel.class)
    .option(ChannelOption.SO_REUSEADDR, true)
    .option(ChannelOption.SO_KEEPALIVE, true)
    .option(ChannelOption.TCP_NODELAY, true)
    .option(ChannelOption.SO_SNDBUF, SEND_BUFFER_SIZE)
    .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, CONNECT_TIMEOUT)
    .handler(channelInitializer);
    clientBootstrap = bootstrap;

    ScheduledExecutorService ses = 
            syncManager.getThreadPool().getScheduledExecutor();
    reconnectTask = new SingletonTask(ses, new ConnectTask());
    reconnectTask.reschedule(0, TimeUnit.SECONDS);
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
public ChannelFuture connectAsync(String host, int port, String remoteId, boolean discoveryMode) {
    ethereumListener.trace("Connecting to: " + host + ":" + port);

    EthereumChannelInitializer ethereumChannelInitializer = ctx.getBean(EthereumChannelInitializer.class, remoteId);
    ethereumChannelInitializer.setPeerDiscoveryMode(discoveryMode);

    Bootstrap b = new Bootstrap();
    b.group(workerGroup);
    b.channel(NioSocketChannel.class);

    b.option(ChannelOption.SO_KEEPALIVE, true);
    b.option(ChannelOption.MESSAGE_SIZE_ESTIMATOR, DefaultMessageSizeEstimator.DEFAULT);
    b.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, config.peerConnectionTimeout());
    b.remoteAddress(host, port);

    b.handler(ethereumChannelInitializer);

    // Start the client.
    return b.connect();
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
private final Future<Void> bootstrap(final NettyChannel channel) {
  final Promise<Void> p = Promise.apply();
  new Bootstrap().group(eventLoopGroup).channel(NioSocketChannel.class)
      .option(ChannelOption.SO_KEEPALIVE, true)
      .option(ChannelOption.AUTO_READ, false)
      .handler(new ChannelInitializer<io.netty.channel.Channel>() {
        @Override
        protected void initChannel(final io.netty.channel.Channel ch) throws Exception {
          ch.pipeline().addLast(new MessageDecoder(), new MessageEncoder(),
              new FlowControlHandler(), channel);
        }
      })
      .connect(new InetSocketAddress(host, port))
      .addListener(future -> p.become(Future.VOID));
  return p;
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
/**
 * 启动服务
 *
 * @throws Exception 异常
 */
public void start() throws Exception {
    try {
        ServerBootstrap bootstrap = new ServerBootstrap();
        bootstrap.group(bossGroup, workerGroup)
                .channel(NioServerSocketChannel.class)
                .childHandler(channelInitializer)
                .option(ChannelOption.SO_BACKLOG, aceServerConfig.getBackSize())
                .childOption(ChannelOption.SO_KEEPALIVE, true)
                .childOption(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
        ChannelFuture future = bootstrap.bind(aceServerConfig.getPort()).sync();
        System.out.println("ace server starter on port : " + aceServerConfig.getPort());
        future.channel().closeFuture().sync();
    } finally {
        close();
    }


}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
@Async("myTaskAsyncPool")
public void run(int udpReceivePort) {

    EventLoopGroup group = new NioEventLoopGroup();
    logger.info("Server start!  Udp Receive msg Port:" + udpReceivePort);

    try {
        Bootstrap b = new Bootstrap();
        b.group(group)
                .channel(NioDatagramChannel.class)
                .option(ChannelOption.SO_BROADCAST, true)
                .handler(new UdpServerHandler());   // 设置服务端接收消息的 Handler (保存消息到 mysql 和 redis 中)

        b.bind(udpReceivePort).sync().channel().closeFuture().await();
    } catch (InterruptedException e) {
        e.printStackTrace();
    } finally {
        group.shutdownGracefully();
    }
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
public Receiver ( final ReceiverHandlerFactory factory, final SocketAddress addr )
{
    this.factory = factory;

    this.bossGroup = new NioEventLoopGroup ();
    this.workerGroup = new NioEventLoopGroup ();
    this.bootstrap = new ServerBootstrap ();
    this.bootstrap.group ( this.bossGroup, this.workerGroup );
    this.bootstrap.channel ( NioServerSocketChannel.class );
    this.bootstrap.option ( ChannelOption.SO_BACKLOG, 5 );
    this.bootstrap.option ( ChannelOption.SO_REUSEADDR, true );
    this.bootstrap.childHandler ( new ChannelInitializer<SocketChannel> () {

        @Override
        protected void initChannel ( final SocketChannel ch ) throws Exception
        {
            handleInitChannel ( ch );
        }
    } );

    this.channel = this.bootstrap.bind ( addr ).channel ();

    logger.info ( "Receiver running ..." );
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
private ChannelFuture bindToPlainSocket() throws InterruptedException {
    String hostname = configuration.getHostName();
    int port = Integer.parseInt(configuration.getPlain().getPort());

    ServerBootstrap b = new ServerBootstrap();
    b.group(bossGroup, workerGroup)
            .channel(NioServerSocketChannel.class)
            .childHandler(new SocketChannelInitializer(ioExecutors))
            .option(ChannelOption.SO_BACKLOG, 128)
            .childOption(ChannelOption.SO_KEEPALIVE, true);

    // Bind and start to accept incoming connections.
    ChannelFuture future = b.bind(hostname, port).sync();
    LOGGER.info("Listening AMQP on " + hostname + ":" + port);
    return future;
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
private ChannelFuture bindToSslSocket()
        throws InterruptedException, CertificateException, UnrecoverableKeyException, NoSuchAlgorithmException,
        KeyStoreException, KeyManagementException, IOException {
    String hostname = configuration.getHostName();
    int port = Integer.parseInt(configuration.getSsl().getPort());

    ServerBootstrap b = new ServerBootstrap();
    b.group(bossGroup, workerGroup)
     .channel(NioServerSocketChannel.class)
     .childHandler(new SslSocketChannelInitializer(ioExecutors, new SslHandlerFactory(configuration)))
     .option(ChannelOption.SO_BACKLOG, 128)
     .childOption(ChannelOption.SO_KEEPALIVE, true);

    // Bind and start to accept incoming connections.
    ChannelFuture future = b.bind(hostname, port).sync();
    LOGGER.info("Listening AMQP/" + configuration.getSsl().getProtocol() + " on " + hostname + ":" + port);
    return future;
}
 

import io.netty.channel.ChannelOption; //导入依赖的package包/类
public void run() {
    try {
        // Configure the server.
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.option(ChannelOption.SO_BACKLOG, 1024);
            b.group(group)
                    .channel(NioServerSocketChannel.class)
                    .handler(new LoggingHandler(LogLevel.INFO))
                    .childHandler(new Http2ServerInitializer(mSslCtx));

            sServerChannel = b.bind(PORT).sync().channel();
            Log.i(TAG, "Netty HTTP/2 server started on " + getServerUrl());
            sBlock.open();
            sServerChannel.closeFuture().sync();
        } finally {
            group.shutdownGracefully();
        }
        Log.i(TAG, "Stopped Http2TestServerRunnable!");
    } catch (Exception e) {
        Log.e(TAG, e.toString());
    }
}