Example usage for java.nio.channels ServerSocketChannel setOption

Introduction

In this page you can find the example usage for java.nio.channels ServerSocketChannel setOption.

Prototype

public abstract <T> ServerSocketChannel setOption(SocketOption<T> name, T value) throws IOException;

Source Link

Usage

From source file:com.byteatebit.nbserver.simple.tcp.TcpConnectorFactory.java

@Override
public IConnector create(ISelectorRegistrarBalancer selectorRegistrarBalancer,
        IComputeTaskScheduler taskScheduler, SocketAddress listenAddress) throws IOException {
    Preconditions.checkNotNull(selectorRegistrarBalancer, "selectorRegistrarBalancer cannot be null");
    Preconditions.checkNotNull(taskScheduler, "taskScheduler cannot be null");
    Preconditions.checkNotNull(listenAddress, "listenAddress cannot be null");
    // open the server socketChannel
    ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();
    serverSocketChannel.configureBlocking(false);
    IOTimeoutTask timeoutTask = (selectionKey, ops) -> {
        LOG.error("selectionKey timeout");
        selectionKey.cancel();//from  w  ww  .j  a  v a  2 s  . c om
        IOUtils.closeQuietly(selectionKey.channel());
    };
    for (SocketOptionValue socketOptionValue : socketOptionValues)
        serverSocketChannel.setOption(socketOptionValue.getOption(), socketOptionValue.getValue());
    SelectionKey serverSocketSelectionKey = selectorRegistrarBalancer.getSelectorRegistrar().register(
            serverSocketChannel, SelectionKey.OP_ACCEPT,
            selectionKey -> connectHandler.accept(
                    new NbContext(selectorRegistrarBalancer.getSelectorRegistrar(), taskScheduler),
                    selectionKey, serverSocketChannel),
            timeoutTask, -1);
    serverSocketChannel.socket().bind(listenAddress, maxServerSocketBacklog);
    return new TcpConnector(serverSocketSelectionKey, serverSocketChannel);
}

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From source file:org.apache.nifi.io.nio.ChannelListener.java

/**
 * Adds a server socket channel for listening to connections.
 *
 * @param nicIPAddress - if null binds to wildcard address
 * @param port - port to bind to/* ww w.  j av a2 s.  c  om*/
 * @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);
}

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From source file:org.apache.nifi.processor.util.listen.dispatcher.SocketChannelDispatcher.java

@Override
public void open(final InetAddress nicAddress, final int port, final int maxBufferSize) throws IOException {
    stopped = false;//from  w  w  w.  j  a v a  2s.  c om
    executor = Executors.newFixedThreadPool(maxConnections);

    final ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();
    serverSocketChannel.configureBlocking(false);
    if (maxBufferSize > 0) {
        serverSocketChannel.setOption(StandardSocketOptions.SO_RCVBUF, maxBufferSize);
        final int actualReceiveBufSize = serverSocketChannel.getOption(StandardSocketOptions.SO_RCVBUF);
        if (actualReceiveBufSize < maxBufferSize) {
            logger.warn("Attempted to set Socket Buffer Size to " + maxBufferSize
                    + " bytes but could only set to " + actualReceiveBufSize
                    + "bytes. You may want to consider changing the Operating System's "
                    + "maximum receive buffer");
        }
    }

    serverSocketChannel.socket().bind(new InetSocketAddress(nicAddress, port));

    selector = Selector.open();
    serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT);
}

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