Example usage for java.net StandardSocketOptions SO_RCVBUF

Introduction

In this page you can find the example usage for java.net StandardSocketOptions SO_RCVBUF.

Prototype

SocketOption SO_RCVBUF

To view the source code for java.net StandardSocketOptions SO_RCVBUF.

Click Source Link

Document

The size of the socket receive buffer.

Usage

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//w w w. java 2s . c  o  m
 * @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);
}

---

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

private DatagramChannel createAndBindDatagramChannel(final InetAddress nicIPAddress, final int port,
        final int receiveBufferSize) throws IOException {
    final DatagramChannel dChannel = DatagramChannel.open();
    dChannel.configureBlocking(false);/*from  w  ww.ja  v a 2 s.c om*/
    if (receiveBufferSize > 0) {
        dChannel.setOption(StandardSocketOptions.SO_RCVBUF, receiveBufferSize);
        final int actualReceiveBufSize = dChannel.getOption(StandardSocketOptions.SO_RCVBUF);
        if (actualReceiveBufSize < receiveBufferSize) {
            LOGGER.warn(this + " attempted to set UDP 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");
        }
    }
    dChannel.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    dChannel.bind(new InetSocketAddress(nicIPAddress, port));
    return dChannel;
}

---

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

@Override
public void open(final InetAddress nicAddress, final int port, final int maxBufferSize) throws IOException {
    stopped = false;/*from  www  . ja v  a2s . co m*/
    datagramChannel = DatagramChannel.open();
    datagramChannel.configureBlocking(false);

    if (maxBufferSize > 0) {
        datagramChannel.setOption(StandardSocketOptions.SO_RCVBUF, maxBufferSize);
        final int actualReceiveBufSize = datagramChannel.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");
        }
    }

    // we don't have to worry about nicAddress being null here because InetSocketAddress already handles it
    datagramChannel.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    datagramChannel.socket().bind(new InetSocketAddress(nicAddress, port));

    // if a sending host and port were provided then connect to that specific address to only receive
    // datagrams from that host/port, otherwise we can receive datagrams from any host/port
    if (sendingHost != null && sendingPort != null) {
        datagramChannel.connect(new InetSocketAddress(sendingHost, sendingPort));
    }

    selector = Selector.open();
    datagramChannel.register(selector, SelectionKey.OP_READ);
}

---

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 va  2  s .  com*/
    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);
}

---