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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.tests;

import org.jgroups.util.Util;

import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.SocketChannel;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicLong;

/**
 * NIO based client for measuring heap-based vs direct byte buffers. Use {@link NioServer} as server
 * @author Bela Ban
 * @since  3.6.4
 */
public class NioClient {
    protected volatile boolean    running=true;
    protected final AtomicLong    total_bytes_sent=new AtomicLong(0);
    protected final AtomicLong    total_msgs=new AtomicLong(0);
    protected Sender[]            senders;



    protected static ByteBuffer create(int size, boolean direct) {
        return direct? ByteBuffer.allocateDirect(size) : ByteBuffer.allocate(size);
    }

    protected void start(InetAddress host, boolean direct, int num_threads) throws Exception {
        boolean looping=true;
        while(looping) {
            int c=Util.keyPress("[1] send [x] exit");
            switch(c) {
                case '1':
                    sendMessages(host, direct, num_threads);
                    break;
                case 'x':
                    looping=false;
                    break;
            }
        }
    }


    protected void sendMessages(InetAddress host, boolean direct, int num_threads) throws Exception {
        total_msgs.set(0);
        total_bytes_sent.set(0);
        senders=new Sender[num_threads];
        final CountDownLatch latch=new CountDownLatch(1);
        for(int i=0; i < senders.length; i++)
            senders[i]=new Sender(host, direct, latch);
        for(Sender sender: senders)
            sender.start();
        latch.countDown();
        for(Sender sender: senders)
            sender.join();
    }



    protected class Sender extends Thread {
        protected SocketChannel        ch;
        protected final CountDownLatch latch;
        protected final InetAddress    host;
        protected final boolean        direct;
        protected final ByteBuffer     buf;

        public Sender(InetAddress host, boolean direct, CountDownLatch latch) {
            this.latch=latch;
            this.host=host;
            this.direct=direct;
            buf=create(NioServer.SIZE, direct);
        }

        public void run() {
             try {
                 ch=SocketChannel.open();
                 ch.configureBlocking(true); // we want blocking behavior
                 ch.connect(new InetSocketAddress(host, 7500));
                 latch.await();
             }
             catch(Exception e) {
                e.printStackTrace();
            }
            for(;;) {
                if(total_bytes_sent.addAndGet(NioServer.SIZE) > NioServer.BYTES_TO_SEND)
                    break;
                buf.rewind();
                try {
                    ch.write(buf);
                    total_msgs.incrementAndGet();
                }
                catch(IOException e) {
                    e.printStackTrace();
                }
            }

            Util.close(ch);
        }
    }


    public static void main(String[] args) throws Exception {
        String host="localhost";
        boolean direct=false;
        int num_threads=5;

        for(int i=0; i < args.length; i++) {
            if(args[i].equals("-host")) {
                host=args[++i];
                continue;
            }
            if(args[i].equals("-direct")) {
                direct=Boolean.parseBoolean(args[++i]);
                continue;
            }
            if(args[i].equals("-num_threads")) {
                num_threads=Integer.parseInt(args[++i]);
                continue;
            }
            System.out.println("NioClient [-host host] [-direct true|false] [-num_threads num]");
            return;
        }

        new NioClient().start(InetAddress.getByName(host), direct, num_threads);
    }


}