Examples with SelectionKey java.nio.channels.SelectionKey used on opensource projects

Example 66 with SelectionKey

use of java.nio.channels.SelectionKey in project runesource by PureCS.

the class Server method accept.

/**
     * Accepts any incoming connections.
     *
     * @throws IOException
     */
private void accept() throws IOException {
    SocketChannel socket;
    /*
         * Here we use a for loop so that we can accept multiple clients per
		 * tick for lower latency. We limit the amount of clients that we
		 * accept per tick to better combat potential denial of service type
		 * attacks.
		 */
    for (int i = 0; i < 10; i++) {
        socket = serverChannel.accept();
        if (socket == null) {
            // No more connections to accept (as this one was invalid).
            break;
        }
        // Register the connection
        HostGateway.enter(socket.socket().getInetAddress().getHostAddress());
        // Set up the new connection.
        socket.configureBlocking(false);
        SelectionKey key = socket.register(selector, SelectionKey.OP_READ);
        Client client = new Player(key);
        System.out.println("Accepted " + client + ".");
        getClientMap().put(key, client);
    }
}

Example 67 with SelectionKey

use of java.nio.channels.SelectionKey in project yyl_example by Relucent.

the class Receive method main.

public static void main(String[] args) throws Exception {
    ByteBuffer buffer = ByteBuffer.allocate(1024);
    ServerSocketChannel ss = ServerSocketChannel.open();
    ss.socket().bind(new InetSocketAddress(9998));
    ss.configureBlocking(false);
    Selector se = Selector.open();
    ss.register(se, SelectionKey.OP_ACCEPT);
    while (se.select() > 0) {
        Set<SelectionKey> set = se.selectedKeys();
        for (SelectionKey key : set) {
            System.out.println("-------------");
            SocketChannel sc = null;
            try {
                if (key.isAcceptable()) {
                    sc = ss.accept();
                    System.err.println("ACCEPTABLE:" + sc.socket());
                    sc.configureBlocking(false);
                    sc.register(se, SelectionKey.OP_READ);
                } else if (key.isReadable()) {
                    sc = (SocketChannel) key.channel();
                    System.out.println(sc.isConnected());
                    sc.read(buffer);
                    buffer.flip();
                    System.out.println(new String(buffer.array(), 0, buffer.remaining()));
                    sc.write(ByteBuffer.wrap("+".getBytes()));
                }
            } catch (Exception e) {
                key.cancel();
                if (sc != null) {
                    sc.close();
                }
                e.printStackTrace();
            }
        }
        set.clear();
    }
}

Example 68 with SelectionKey

use of java.nio.channels.SelectionKey in project yyl_example by Relucent.

the class Send method main.

public static void main(String[] args) throws Exception {
    SocketChannel socketChannel = SocketChannel.open();
    socketChannel.configureBlocking(false);
    Selector selector = Selector.open();
    socketChannel.register(selector, SelectionKey.OP_CONNECT | SelectionKey.OP_READ | SelectionKey.OP_WRITE);
    socketChannel.connect(new InetSocketAddress("127.0.0.1", 9998));
    while (!socketChannel.finishConnect()) {
    }
    ByteBuffer buffer = ByteBuffer.allocate(1024);
    socketChannel.write(ByteBuffer.wrap("-".getBytes()));
    int index = 0;
    while (true) {
        if (selector.select() == 0) {
            Thread.sleep(1000);
            continue;
        }
        Set<SelectionKey> set = selector.selectedKeys();
        for (SelectionKey key : set) {
            int ops = key.readyOps();
            if ((ops & SelectionKey.OP_CONNECT) == SelectionKey.OP_CONNECT) {
                socketChannel.write(buffer);
                System.out.println("OP_CONNECT:");
            }
            if ((ops & SelectionKey.OP_READ) == SelectionKey.OP_READ) {
                socketChannel.read(buffer);
                buffer.flip();
                System.out.println(new String(buffer.array(), 0, buffer.remaining()));
                buffer.clear();
                socketChannel.write(ByteBuffer.wrap(("No-" + index + " | ").getBytes()));
                index++;
            }
        }
        set.clear();
        Thread.sleep(1000);
    }
}

Example 69 with SelectionKey

use of java.nio.channels.SelectionKey in project CshBBrain by CshBBrain.

the class Worker method process.

public void process(Object selectKey) {
    if (selectKey instanceof SelectionKey) {
        SelectionKey selectionKey = (SelectionKey) selectKey;
        Client key = Client.getSockector(selectionKey);
        if (key.getMessages(charBuffer)) {
            // 已完成握手，从客户端读取报刊
            // 进行业务处理
            key.process();
        }
    } else if (selectKey instanceof Client) {
        // 直接发送消息
        ((Client) selectKey).send();
    }
}

Example 70 with SelectionKey

use of java.nio.channels.SelectionKey in project CshBBrain by CshBBrain.

the class MasterServer method startClustersMonitor.

/**
	 * 
	 * <li>方法名：startClustersMonitor
	 * <li>
	 * <li>返回类型：void
	 * <li>说明：开始监听集群服务器节点中的连接请求
	 * <li>创建人：CshBBrain, 技术博客：http://cshbbrain.iteye.com/
	 * <li>创建日期：2012-10-21
	 * <li>修改人： 
	 * <li>修改日期：
	 */
private void startClustersMonitor() {
    try {
        // Create a new selector
        Selector selector = Selector.open();
        // Create a new non-blocking server socket channel
        ServerSocketChannel serverChannel = ServerSocketChannel.open();
        serverChannel.configureBlocking(false);
        // 集群端口
        InetSocketAddress isa = new InetSocketAddress(this.clustersPort);
        serverChannel.socket().bind(isa);
        // Register the server socket channel, indicating an interest in 
        // accepting new connections
        serverChannel.register(selector, SelectionKey.OP_ACCEPT);
        log.info("集群服务器准备就绪，等待集群请求到来");
        while (noStopRequested) {
            try {
                int num = 0;
                // Wait for an event one of the registered channels
                num = selector.select(100);
                if (num > 0) {
                    // Iterate over the set of keys for which events are available
                    Iterator<SelectionKey> selectedKeys = selector.selectedKeys().iterator();
                    while (selectedKeys.hasNext()) {
                        SelectionKey key = (SelectionKey) selectedKeys.next();
                        selectedKeys.remove();
                        if (!key.isValid()) {
                            continue;
                        }
                        // Check what event is available and deal with it
                        if (key.isAcceptable()) {
                            // 注册集群连接
                            this.accept(key, true);
                        }
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        // 关闭服务器
        serverChannel.close();
    } catch (Exception e) {
        e.printStackTrace();
        System.out.println("Clusters Server start up fail");
    }
}