Causes Assertion failed: fds.size () <= FD_SETSIZE (\zeromq2\src\select.cpp:67)

PushTest.java

import org.zeromq.ZMQ;

public class PushTest
{
  public static void main(String[] args)
  {
    final ZMQ.Context ctx = ZMQ.context(1);
    new Thread()
    {
      @Override
      public void run()
      {
        ZMQ.Socket socket = ctx.socket(ZMQ.PULL);
        socket.bind("tcp://*:5000");
        boolean stop = false;
        while (!stop)
        {
          String item = new String(socket.recv(0));
          System.out.println(item);
          if ("stop".equals(item))
          {
            stop = true;
          }
        }
        socket.close();
      }
    }.start();
    for (int i = 0; i < 50; i++)
      send(ctx, "" + i);
    send(ctx, "stop");
  }

  public static void send(final ZMQ.Context ctx, String string)
  {
    ZMQ.Socket socket = ctx.socket(ZMQ.PUSH);
    socket.connect("tcp://localhost:5000");
    socket.send(string.getBytes(), 0);
    socket.close();
  }

}