Java ServerBootstrap.group方法代码示例

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
@Override
public void openServer(URL url) throws Exception{
    EventLoopGroup eventLoop = new NioEventLoopGroup();
    EventLoopGroup workLoop = new NioEventLoopGroup();
    serverBootstrap = new ServerBootstrap();
    serverBootstrap.group(eventLoop, workLoop);
    serverBootstrap.channel(NioServerSocketChannel.class);
    serverBootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);
    serverBootstrap.childHandler(new ChannelInitializer<SocketChannel>(){

        @Override
        protected void initChannel(SocketChannel ch) throws Exception {
            ch.pipeline()
                    .addLast("decoder", new ObjectDecoder(ClassResolvers.cacheDisabled(getClass().getClassLoader()))) // in 1
                    .addLast("handler", new ServerHandler()) // in 2
                    .addLast("encoder", new ObjectEncoder()); // out 3

        }
    });
    serverChannel = serverBootstrap.bind(url.getPort()).sync().sync().channel();
    logger.info("start server at:" + url.getPort());
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
public void doOpen() throws InterruptedException {
    EventLoopGroup bossGroup = new NioEventLoopGroup();
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try{
        ServerBootstrap serverBootstrap = new ServerBootstrap();
        serverBootstrap.group(bossGroup,workerGroup);
        serverBootstrap.channel(NioServerSocketChannel.class);
        serverBootstrap.childHandler(new ChannelInitializer<SocketChannel>() {
            protected void initChannel(SocketChannel socketChannel) throws Exception {
                ChannelPipeline pipeline = socketChannel.pipeline();
                pipeline.addLast(new ObjectDecoder(1024*1024, ClassResolvers.weakCachingConcurrentResolver(this.getClass().getClassLoader())));
                pipeline.addLast(new ObjectEncoder());
                pipeline.addLast((SimpleChannelInboundHandler)handler);
            }
        });
        serverBootstrap.option(ChannelOption.SO_BACKLOG,1024);
        serverBootstrap.childOption(ChannelOption.SO_KEEPALIVE,true);
        ChannelFuture future = serverBootstrap.bind(address,port).sync();
        //future.channel().closeFuture().sync();
    }finally{
        //workerGroup.shutdownGracefully();
        //bossGroup.shutdownGracefully();
    }
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
private void startAcceptingConnections() throws InterruptedException {
    ServerBootstrap b = new ServerBootstrap();
    b.option(ChannelOption.WRITE_BUFFER_HIGH_WATER_MARK, 32 * 1024);
    b.option(ChannelOption.WRITE_BUFFER_LOW_WATER_MARK, 8 * 1024);
    b.option(ChannelOption.SO_RCVBUF, 1048576);
    b.option(ChannelOption.TCP_NODELAY, true);
    b.option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
    b.group(serverGroup, clientGroup);
    b.channel(serverChannelClass);
    if (enableNettyTls) {
        b.childHandler(new SslServerCommunicationChannelInitializer());
    } else {
        b.childHandler(new OnosCommunicationChannelInitializer());
    }
    b.option(ChannelOption.SO_BACKLOG, 128);
    b.childOption(ChannelOption.SO_KEEPALIVE, true);

    // Bind and start to accept incoming connections.
    b.bind(localEp.port()).sync().addListener(future -> {
        if (future.isSuccess()) {
            log.info("{} accepting incoming connections on port {}", localEp.host(), localEp.port());
        } else {
            log.warn("{} failed to bind to port {}", localEp.host(), localEp.port(), future.cause());
        }
    });
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
public void start(){
	logger.debug( "--Socket Server will start------------" ) ;
	boss = new NioEventLoopGroup() ;
	work = new NioEventLoopGroup() ;
	int port = CommonConfig.getInteger( SOCKET_PORT1 );
	try {
		
		logger.info( "Netty Server[" + port + "] started..." ) ;
		ServerBootstrap b = new ServerBootstrap() ;

		b.group( boss , work ) ;
		b.channel( NioServerSocketChannel.class ) ;
		b.childHandler( nettyInitializer ) ;
		b.bind( port ).sync().channel().closeFuture().sync() ;
	} catch ( Exception e ) {
		String err_string = e.toString();
		if( err_string.indexOf( "childHandler" ) != -1 ){
			logger.error( "Netty Server[" + port + "] NettyInitializer can't find." ) ;
		}else{
			logger.error( "Netty Server[" + port + "] onload err:" + e.toString() , e  ) ;
		}
	} finally {
		logger.error( "Netty Server[" + port + "] will be unload..."  ) ;
		unload();
	}
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
public void start(int port) {
    // TODO review listening use
    listening = true;

    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();

    EthereumChannelInitializer ethereumChannelInitializer = ethereumChannelInitializerFactory.newInstance("");

    ethereumListener.trace("Listening on port " + port);


    try {
        ServerBootstrap b = new ServerBootstrap();

        b.group(bossGroup, workerGroup);
        b.channel(NioServerSocketChannel.class);

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

        b.handler(new LoggingHandler());
        b.childHandler(ethereumChannelInitializer);

        // Start the client.
        logger.info("Listening for incoming connections, port: [{}] ", port);
        logger.info("NodeId: [{}] ", Hex.toHexString(config.nodeId()));

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

        // Wait until the connection is closed.
        f.channel().closeFuture().sync();
        logger.debug("Connection is closed");

        // TODO review listening use
        listening = false;
    } catch (Exception e) {
        logger.debug("Exception: {} ({})", e.getMessage(), e.getClass().getName());
        throw new Error("Server Disconnected");
    } finally {
        workerGroup.shutdownGracefully();

    }
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
public void startSocket() throws InterruptedException {
    EventLoopGroup boss = new NioEventLoopGroup();
    EventLoopGroup worker = new NioEventLoopGroup();

    try {
        ServerBootstrap boot = new ServerBootstrap();
        boot.group(boss,worker);

        boot.channel(NioServerSocketChannel.class);
        boot.childHandler(new ChannelInitializer<SocketChannel>() {
            @Override
            protected void initChannel(SocketChannel ch) throws Exception {
                ch.pipeline().addLast(new LengthFieldBasedFrameDecoder(1024*1024,0,4,-4,0,false));
                ch.pipeline().addLast(new ByteToPacketCodec());
                //ch.pipeline().addLast(new LoginChannelHandler(listener));
                ch.pipeline().addLast(new PacketChannelHandler(listener));
            }
        });

        boot.option(ChannelOption.SO_BACKLOG,128);
        boot.childOption(ChannelOption.SO_KEEPALIVE,true);
        channelFuture = boot.bind(port).sync();
        System.out.println("服务器"+port+"开启成功...");
        channelFuture.channel().closeFuture().sync();
    }finally {
        boss.shutdownGracefully().sync();
        worker.shutdownGracefully().sync();
        channelFuture = null;
        System.out.println("服务器关闭成功...");
    }
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
public void start() throws Exception {
    try {
        ServerBootstrap bootstrap = new ServerBootstrap();
        bootstrap.group(boss, worker);
        bootstrap.channel(NioServerSocketChannel.class);
        bootstrap.handler(new LoggingHandler(LogLevel.INFO));
        bootstrap.childHandler(ProxyServerChannelInitializerFactory.getChannelInitializer(definition));
        bootstrap.childOption(ChannelOption.AUTO_READ, false);
        bootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);
        server = bootstrap.bind(port).sync().channel();
        log.info("Started proxy server at port: " + port);
    } catch (Exception e) {
        log.error(String.format("Failed starting proxy server at port: %d", port), e);
    }
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
/**
 * Starts the network for a {@link Server}.
 * 
 * @param server The {@link Server} to use for building the network.
 * @return <True> If the network started successfully.
 */
public static void start() {
	EventLoopGroup boss = new NioEventLoopGroup();
	EventLoopGroup worker = new NioEventLoopGroup();
	ServerBootstrap bootstrap = new ServerBootstrap();

	bootstrap.group(boss, worker);
	bootstrap.channel(NioServerSocketChannel.class);
	bootstrap.childHandler(new ChannelInitializer<SocketChannel>() {

		@Override
		protected void initChannel(SocketChannel ch) throws Exception {
			ChannelPipeline pipeline = ch.pipeline();

			pipeline.addLast("decoder", new ConnectionDecoder());
			pipeline.addLast("encoder", new ConnectionEncoder());
			pipeline.addLast("adapter", new NetworkMessageHandler());
		}

	});
	bootstrap.childOption(ChannelOption.TCP_NODELAY, true);

	try {
		bootstrap.bind(Constants.HOST_NAME, Constants.HOST_PORT).sync();
	} catch (InterruptedException e) {
		e.printStackTrace();
	}

	System.out.println("Server successfully bootstrapped on port " + Constants.HOST_PORT + " and address " + Constants.HOST_NAME + ".");
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
public void run() {
	ServerBootstrap b = new ServerBootstrap();// 引导辅助程序

	bossGroup = new NioEventLoopGroup(BIZGROUPSIZE);
	workerGroup = new NioEventLoopGroup(BIZTHREADSIZE);
	try {
		b.group(bossGroup, workerGroup);
		b.channel(NioServerSocketChannel.class);// 设置nio类型的channel
		b.childHandler(new ChannelInitializer<SocketChannel>() {// 有连接到达时会创建一个channel
			protected void initChannel(SocketChannel ch) throws Exception {
				logger.debug("客户端:{} 初始化", ch.remoteAddress());
				// pipeline管理channel中的Handler，在channel队列中添加一个handler来处理业务
				ch.pipeline().addLast("frameDecoder",
						new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE, 0, 4, 0, 4));
				ch.pipeline().addLast("frameEncoder", new LengthFieldPrepender(4));
				ch.pipeline().addLast("decoder", msgPackDecode);
				ch.pipeline().addLast("encoder", msgPackEncode);
				ch.pipeline().addLast(serverHandler);
			}
		});
		b.option(ChannelOption.SO_BACKLOG, 128);
		b.childOption(ChannelOption.SO_KEEPALIVE, true);
		logger.info("server start : {}", port);
		ChannelFuture f = b.bind(port).sync();// 配置完成，开始绑定server，通过调用sync同步方法阻塞直到绑定成功
		channel = f.channel();
		f.channel().closeFuture().sync();// 应用程序会一直等待，直到channel关闭
	} catch (Exception e) {
		e.printStackTrace();
	}

}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
@Override
protected void doStart() {
    boolean success = false;
    try {
        this.serverOpenChannels = new Netty4OpenChannelsHandler(logger);

        serverBootstrap = new ServerBootstrap();

        serverBootstrap.group(new NioEventLoopGroup(workerCount, daemonThreadFactory(settings,
            HTTP_SERVER_WORKER_THREAD_NAME_PREFIX)));
        serverBootstrap.channel(NioServerSocketChannel.class);

        serverBootstrap.childHandler(configureServerChannelHandler());

        serverBootstrap.childOption(ChannelOption.TCP_NODELAY, SETTING_HTTP_TCP_NO_DELAY.get(settings));
        serverBootstrap.childOption(ChannelOption.SO_KEEPALIVE, SETTING_HTTP_TCP_KEEP_ALIVE.get(settings));

        final ByteSizeValue tcpSendBufferSize = SETTING_HTTP_TCP_SEND_BUFFER_SIZE.get(settings);
        if (tcpSendBufferSize.getBytes() > 0) {
            serverBootstrap.childOption(ChannelOption.SO_SNDBUF, Math.toIntExact(tcpSendBufferSize.getBytes()));
        }

        final ByteSizeValue tcpReceiveBufferSize = SETTING_HTTP_TCP_RECEIVE_BUFFER_SIZE.get(settings);
        if (tcpReceiveBufferSize.getBytes() > 0) {
            serverBootstrap.childOption(ChannelOption.SO_RCVBUF, Math.toIntExact(tcpReceiveBufferSize.getBytes()));
        }

        serverBootstrap.option(ChannelOption.RCVBUF_ALLOCATOR, recvByteBufAllocator);
        serverBootstrap.childOption(ChannelOption.RCVBUF_ALLOCATOR, recvByteBufAllocator);

        final boolean reuseAddress = SETTING_HTTP_TCP_REUSE_ADDRESS.get(settings);
        serverBootstrap.option(ChannelOption.SO_REUSEADDR, reuseAddress);
        serverBootstrap.childOption(ChannelOption.SO_REUSEADDR, reuseAddress);

        this.boundAddress = createBoundHttpAddress();
        if (logger.isInfoEnabled()) {
            logger.info("{}", boundAddress);
        }
        success = true;
    } finally {
        if (success == false) {
            doStop(); // otherwise we leak threads since we never moved to started
        }
    }
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
private void createServerBootstrap(String name, Settings settings) {
    if (logger.isDebugEnabled()) {
        logger.debug("using profile[{}], worker_count[{}], port[{}], bind_host[{}], publish_host[{}], compress[{}], "
                + "connect_timeout[{}], connections_per_node[{}/{}/{}/{}/{}], receive_predictor[{}->{}]",
            name, workerCount, settings.get("port"), settings.get("bind_host"), settings.get("publish_host"), compress,
            defaultConnectionProfile.getConnectTimeout(),
            defaultConnectionProfile.getNumConnectionsPerType(TransportRequestOptions.Type.RECOVERY),
            defaultConnectionProfile.getNumConnectionsPerType(TransportRequestOptions.Type.BULK),
            defaultConnectionProfile.getNumConnectionsPerType(TransportRequestOptions.Type.REG),
            defaultConnectionProfile.getNumConnectionsPerType(TransportRequestOptions.Type.STATE),
            defaultConnectionProfile.getNumConnectionsPerType(TransportRequestOptions.Type.PING),
            receivePredictorMin, receivePredictorMax);
    }

    final ThreadFactory workerFactory = daemonThreadFactory(this.settings, TRANSPORT_SERVER_WORKER_THREAD_NAME_PREFIX, name);

    final ServerBootstrap serverBootstrap = new ServerBootstrap();

    serverBootstrap.group(new NioEventLoopGroup(workerCount, workerFactory));
    serverBootstrap.channel(NioServerSocketChannel.class);

    serverBootstrap.childHandler(getServerChannelInitializer(name, settings));

    serverBootstrap.childOption(ChannelOption.TCP_NODELAY, TCP_NO_DELAY.get(settings));
    serverBootstrap.childOption(ChannelOption.SO_KEEPALIVE, TCP_KEEP_ALIVE.get(settings));

    final ByteSizeValue tcpSendBufferSize = TCP_SEND_BUFFER_SIZE.getDefault(settings);
    if (tcpSendBufferSize != null && tcpSendBufferSize.getBytes() > 0) {
        serverBootstrap.childOption(ChannelOption.SO_SNDBUF, Math.toIntExact(tcpSendBufferSize.getBytes()));
    }

    final ByteSizeValue tcpReceiveBufferSize = TCP_RECEIVE_BUFFER_SIZE.getDefault(settings);
    if (tcpReceiveBufferSize != null && tcpReceiveBufferSize.getBytes() > 0) {
        serverBootstrap.childOption(ChannelOption.SO_RCVBUF, Math.toIntExact(tcpReceiveBufferSize.bytesAsInt()));
    }

    serverBootstrap.option(ChannelOption.RCVBUF_ALLOCATOR, recvByteBufAllocator);
    serverBootstrap.childOption(ChannelOption.RCVBUF_ALLOCATOR, recvByteBufAllocator);

    final boolean reuseAddress = TCP_REUSE_ADDRESS.get(settings);
    serverBootstrap.option(ChannelOption.SO_REUSEADDR, reuseAddress);
    serverBootstrap.childOption(ChannelOption.SO_REUSEADDR, reuseAddress);

    serverBootstrap.validate();

    serverBootstraps.put(name, serverBootstrap);
}
 

import io.netty.bootstrap.ServerBootstrap; //导入方法依赖的package包/类
public void start(int port) {

        bossGroup = new NioEventLoopGroup(1);
        workerGroup = new NioEventLoopGroup();

        ethereumChannelInitializer = ctx.getBean(EthereumChannelInitializer.class, "");

        ethereumListener.trace("Listening on port " + port);


        try {
            ServerBootstrap b = new ServerBootstrap();

            b.group(bossGroup, workerGroup);
            b.channel(NioServerSocketChannel.class);

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

            b.handler(new LoggingHandler());
            b.childHandler(ethereumChannelInitializer);

            // Start the client.
            logger.info("Listening for incoming connections, port: [{}] ", port);
            logger.info("NodeId: [{}] ", Hex.toHexString(config.nodeId()));

            channelFuture = b.bind(port).sync();

            listening = true;
            // Wait until the connection is closed.
            channelFuture.channel().closeFuture().sync();
            logger.debug("Connection is closed");

        } catch (Exception e) {
            logger.debug("Exception: {} ({})", e.getMessage(), e.getClass().getName());
            throw new Error("Server Disconnected");
        } finally {
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
            listening = false;
        }
    }