Request-reply client in Java

package guide;

import org.zeromq.SocketType;
import org.zeromq.ZMQ;
import org.zeromq.ZMQ.Socket;
import org.zeromq.ZContext;

/**

  • Hello World client
  • Connects REQ socket to tcp://localhost:5559
  • Sends "Hello" to server, expects "World" back

*/
public class rrclient
{

public static void main(String[] args)
{
try (ZContext context = new ZContext()) {
// Socket to talk to server
Socket requester = context.createSocket(SocketType.REQ);
requester.connect("tcp://localhost:5559");

System.out.println("launch and connect client.");

for (int request_nbr = 0; request_nbr < 10; request_nbr++) {
requester.send("Hello", 0);
String reply = requester.recvStr(0);
System.out.println(
"Received reply " + request_nbr + " [" + reply + "]"
);
}
}
}
}