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

Example 36 with ServerSocketChannel

use of java.nio.channels.ServerSocketChannel in project nifi by apache.

the class ChannelListener method addServerSocket.

/**
 * Adds a server socket channel for listening to connections.
 *
 * @param nicIPAddress - if null binds to wildcard address
 * @param port - port to bind to
 * @param receiveBufferSize - size of OS receive buffer to request. If less
 * than 0 then will not be set and OS default will win.
 * @throws IOException if unable to add socket
 */
public void addServerSocket(final InetAddress nicIPAddress, final int port, final int receiveBufferSize) throws IOException {
    final ServerSocketChannel ssChannel = ServerSocketChannel.open();
    ssChannel.configureBlocking(false);
    if (receiveBufferSize > 0) {
        ssChannel.setOption(StandardSocketOptions.SO_RCVBUF, receiveBufferSize);
        final int actualReceiveBufSize = ssChannel.getOption(StandardSocketOptions.SO_RCVBUF);
        if (actualReceiveBufSize < receiveBufferSize) {
            LOGGER.warn(this + " attempted to set TCP Receive Buffer Size to " + receiveBufferSize + " bytes but could only set to " + actualReceiveBufSize + "bytes. You may want to consider changing the Operating System's " + "maximum receive buffer");
        }
    }
    ssChannel.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    ssChannel.bind(new InetSocketAddress(nicIPAddress, port));
    ssChannel.register(serverSocketSelector, SelectionKey.OP_ACCEPT);
}

Example 37 with ServerSocketChannel

use of java.nio.channels.ServerSocketChannel in project TeeTime by teetime-framework.

the class AbstractTcpReader method run.

@Override
public final void run() {
    ServerSocketChannel serversocket = null;
    try {
        serversocket = ServerSocketChannel.open();
        serversocket.socket().bind(new InetSocketAddress(this.port));
        if (logger.isDebugEnabled()) {
            logger.debug("Listening on port " + this.port);
        }
        final SocketChannel socketChannel = serversocket.accept();
        try {
            final ByteBuffer buffer = ByteBuffer.allocateDirect(bufferCapacity);
            while (socketChannel.read(buffer) != -1 && !terminated) {
                process(buffer);
            }
        } finally {
            socketChannel.close();
        }
    } catch (final IOException ex) {
        logger.error("Error while reading.", ex);
    } finally {
        if (null != serversocket) {
            try {
                serversocket.close();
            } catch (final IOException e) {
                logger.debug("Failed to close TCP connection.", e);
            }
        }
    }
}

Example 38 with ServerSocketChannel

use of java.nio.channels.ServerSocketChannel in project pancm_project by xuwujing.

the class socketTest method serve1.

/**
 * socket 实现非阻塞 I/O
 * @param port
 * @throws IOException
 */
public void serve1(int port) throws IOException {
    ServerSocketChannel serverChannel = ServerSocketChannel.open();
    serverChannel.configureBlocking(false);
    ServerSocket ssocket = serverChannel.socket();
    InetSocketAddress address = new InetSocketAddress(port);
    ssocket.bind(address);
    // 打开Selector来处理Channel
    Selector selector = Selector.open();
    // 将ServerSocket 注册到Selector以接受连接
    serverChannel.register(selector, SelectionKey.OP_ACCEPT);
    final ByteBuffer msg = ByteBuffer.wrap("Hi!\r\n".getBytes());
    for (; ; ) {
        try {
            // 等待需要处理的新事件； 阻 塞 将一直持续到下一个传入事件
            selector.select();
        } catch (IOException ex) {
            ex.printStackTrace();
            break;
        }
        // 获取所有接收事件的Selection-Key实例
        Set<SelectionKey> readyKeys = selector.selectedKeys();
        Iterator<SelectionKey> iterator = readyKeys.iterator();
        while (iterator.hasNext()) {
            SelectionKey key = iterator.next();
            iterator.remove();
            try {
                // 检查事件是否是一个新的已经就绪可以被接受的连接
                if (key.isAcceptable()) {
                    ServerSocketChannel server = (ServerSocketChannel) key.channel();
                    SocketChannel client = server.accept();
                    client.configureBlocking(false);
                    // 接受客户端，并将它注册到选择器
                    client.register(selector, SelectionKey.OP_WRITE | SelectionKey.OP_READ, msg.duplicate());
                    System.out.println("Accepted connection from " + client);
                }
                // 检查套接字是否已经准备好写数据
                if (key.isWritable()) {
                    SocketChannel client = (SocketChannel) key.channel();
                    ByteBuffer buffer = (ByteBuffer) key.attachment();
                    // 将数据写到已连接的客户端
                    while (buffer.hasRemaining()) {
                        if (client.write(buffer) == 0) {
                            break;
                        }
                    }
                    client.close();
                }
            } catch (IOException ex) {
                key.cancel();
                try {
                    key.channel().close();
                } catch (IOException cex) {
                // ignore on close
                }
            }
        }
    }
}

Example 39 with ServerSocketChannel

use of java.nio.channels.ServerSocketChannel in project chuidiang-ejemplos by chuidiang.

the class Client method main.

public static void main(String[] args) {
    try (ServerSocketChannel server = ServerSocketChannel.open()) {
        server.bind(new InetSocketAddress("0.0.0.0", 5557));
        while (true) {
            SocketChannel client = server.accept();
            new Thread(new Client(client)).start();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

Example 40 with ServerSocketChannel

use of java.nio.channels.ServerSocketChannel in project chuidiang-ejemplos by chuidiang.

the class Client method main.

public static void main(String[] args) throws IOException {
    ServerSocketChannel server = ServerSocketChannel.open();
    server.bind(new InetSocketAddress("127.0.0.1", 5557));
    while (true) {
        SocketChannel client = server.accept();
        new Thread(new Client(client)).start();
    }
}