Send ISOMsg to ISOServer

Question

I have to send ISO8583 messages to an ISOServer using jPOS. I was able to communicate with a QServer from a client-simulator sending messages and getting responses. Now, I have to implement a java project (client) that sends those messages to that same server.

I have a QServer listening on port 10000 and an ISOMsg object in the main class of my project. How can I send this message to the server (localhost:10000) ?

Thank you in advance.

Answer 1

The best thing you can do is not to use a main class at all, but use the Client Simulator replacing the client simulator deploy descriptor by one that uses a QBean written by you.Chapters 7.4 - 7.6 of the programmers guide. Walk you through the process of creating one, you just need to change the code to get the MUX (you can use the ClientSimulator code as a base to do that) and use it to make a request as the client simulator does.

Here you have an example QBean that sends a request at the start face and prints the response.

package stack.examples;

import org.jpos.iso.ISOMsg;
import org.jpos.iso.MUX;
import org.jpos.iso.packager.ISO87APackager;
import org.jpos.q2.QBeanSupport;
import org.jpos.q2.iso.QMUX;
public class SendMessageQBean extends  QBeanSupport{

    @Override
    protected void startService() throws Exception {
        super.startService();
        ISOMsg request = new ISOMsg();

        request.setMTI("0200");

        request.set(2, "16");

        request.set(2, "5421287475388412");

        request.set(3, "000000");

        request.set(4, "400.0");

        request.set(7, "0716070815");

        request.set(11, "844515");

        MUX mux = QMUX.getMUX(cfg.get("dest-mux", "clientsimulator-mux"));
        log.info("sending request", request);
        ISOMsg response = mux.request(request, cfg.getInt("timeout", 5000));

        log.info("received response", response);
    }

}

Hope this point you in the right direction.

Also if you really want to write a main for understanding the basic concepts here you have a minimalist code (without muxes, logger, etc).

package stack.examples;

import java.io.IOException;

import org.jpos.iso.ISOChannel;
import org.jpos.iso.ISOException;
import org.jpos.iso.ISOMsg;
import org.jpos.iso.ISOPackager;
import org.jpos.iso.channel.XMLChannel;
import org.jpos.iso.packager.XMLPackager;

public class JposClient {

    public static void main(String[] args) throws ISOException, IOException {
        ISOPackager packager = new XMLPackager();
        ISOChannel channel = new XMLChannel("localhost", 10000,packager);
        channel.connect();
        ISOMsg request = new ISOMsg();

        request.setMTI("0200");

        request.set(2, "16");

        request.set(2, "5421287475388412");

        request.set(3, "000000");

        request.set(4, "400.0");

        request.set(7, "0716070815");

        request.set(11, "844515");

        channel.send(request);

        ISOMsg response = channel.receive();

        response.dump(System.out, "response:");

    }

}