Add 2 byte length header to message using NACChannel.

Shareefuddin Mohammed

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Jan 9, 2020, 9:21:59 PM1/9/20

to jPOS Users

Hi,

I am using NACChannel to send ISO message to server which require [2 byte + message length] as length header prepended to ISO message.

Example : Hex string : 004f303130307038000100c09000130600649128699990086531000000000000000014084514084501060606128630526f785465737439393939393939393939303030303008403030303038303636

Server is complaining that they are not getting 004f as the message header.

Used below code to send :

import org.jpos.iso.*;
import org.jpos.util.*;
import org.jpos.iso.channel.*;
import org.jpos.iso.header.BaseHeader;
import org.jpos.iso.packager.*;
import java.nio.ByteBuffer;

public class NACChannelTest1 {
    public static void main (String[] args) throws Exception {
        try {
            String HOST = "xxxxxx.xxxx.xxx";
            int PORT = xxxx;
            Logger logger = new Logger();
            logger.addListener (new SimpleLogListener (System.out));
            // Create Packager based on XML that contain DE type
            ISOBasePackager packager = new GenericPackager("resources/fields.xml");
            ISOMsg isoMsg = build200ISOMessage(packager);

            byte[] data = isoMsg.pack();
            short messageLength = (short)data.length;
            ByteBuffer bb = ByteBuffer.allocate(2);
            bb.putShort(messageLength);
            byte[] headerArr1 = bb.array();
            byte fByte = headerArr1[0];
            byte sByte = (byte) (headerArr1[1] + (byte)2);
            byte[] headerArr2 = new byte[2];
            headerArr2[0] = fByte;
            headerArr2[1] = sByte;

            BaseHeader bh = new BaseHeader(headerArr2);
            isoMsg.setHeader((ISOHeader)bh);

            String hexStr = ISOUtil.byte2hex(data);
            System.out.println("hexStr : "+hexStr);

            NACChannel nc = new NACChannel(HOST, PORT, isoMsg.getPackager(), null);
            ((LogSource)nc).setLogger (logger, "test-channel");
            ISOMUX mux = new ISOMUX(nc);
            new Thread(mux).start();
            ISOMsg response = mux.request(isoMsg, 5*1000);

            System.out.println("Getting response "+response);
            if (response != null) {
                response.dump(System.out, "");
                System.out.println("MTI : "+response.getMTI());
            }
        } catch (Exception e) {
            System.out.println("Exception found");
        }
    }

    private static ISOMsg build200ISOMessage(ISOBasePackager packager) throws ISOException {
        // Create ISO Message
        ISOMsg isoMsg = new ISOMsg();
        isoMsg.setPackager(packager);
        isoMsg.setMTI("0100");
        isoMsg.set("2", "6006491286999980958");
        isoMsg.set("3", "310000");
        isoMsg.set("4", "000000000000");
        isoMsg.set("11", "025220");
        isoMsg.set("12", "025220");
        isoMsg.set("13", "0109");
        isoMsg.set("32", "061286");
        isoMsg.set("41", "RoxTest1");
        isoMsg.set("42", "999999999900000");
        isoMsg.set("49", "0840");

        return isoMsg;
    }

}

Logs :

hexStr : 303130307038000100c080001306006491286999980958310000000000000000025220025220010906061286526f7854657374313939393939393939393930303030300840
<log realm="test-channel/208.224.248.174:5122" at="2020-01-09T16:47:19.601" lifespan="220ms">
<connect>
    Try 0 xxxx.xxx.xxx:xxxx
</connect>
</log>
<log realm="test-channel/xxx.xxx.xxx.xxx:xxxx" at="2020-01-09T16:47:19.673">
<send>
    <isomsg direction="outgoing">
      
      <header>0047</header>
      <field id="0" value="0100"/>
      <field id="2" value="6006491286999980958"/>
      <field id="3" value="310000"/>
      <field id="4" value="000000000000"/>
      <field id="11" value="025220"/>
      <field id="12" value="025220"/>
      <field id="13" value="0109"/>
      <field id="32" value="061286"/>
      <field id="41" value="TesTest1"/>
      <field id="42" value="999999999900000"/>
      <field id="49" value="0840"/>
    </isomsg>
</send>
</log>
<log realm="test-channel/xxx.xxx.xxx.xxx:xxxx" at="2020-01-09T16:47:19.887" lifespan="214ms">
<receive>
    <peer-disconnect/>
</receive>
</log>
<log realm="test-channel/xxx.xxx.xxx.xxx:xxxx" at="2020-01-09T16:47:19.888">
<usable>
    false
</usable>
</log>

Server support reported that they are not getting valid ISO message from client.

Server does not see a valid request as we cannot identify what is being sent:

08:00:29 $TNM1 ISO8583 : Unknown Msg [999]

08:01:27 $TNM1 ISO8583 : Unknown Msg [999]

Please help me in figuring out the issue.

Regards,

Shareef

Alejandro Revilla

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Jan 9, 2020, 9:40:47 PM1/9/20

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I believe you are going through a huge effort, dealing with the header, packing the message and computing its length, and all that is handled by jPOS automatically.

Take a look at the jPOS gateway tutorial (http://jpos.org/tutorials), use Q2 to setup your MUX and ChannelAdaptor, then you just need to create an ISOMsg (don't have to create packager/channel, etc.) and call `mux.request`

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Shareefuddin Mohammed

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Jan 13, 2020, 12:58:44 AM1/13/20

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Thank you Alejandro, I'll follow the tutorials to send header length.

I am facing one more issue :
Server unable to receive complete message from client, once client closes connection then receiving the remaining message.

Tried in netcat server :

Receive this which is not a complete message,

00000000 00 47 30 31 30 30 70 38 00 01 00 c0 80 00 13 06 |.G0100p8........|
00000010 00 64 91 28 69 99 98 09 58 31 00 00 00 00 00 00 |.d.(i...X1......|
00000020 00 00 10 34 20 10 34 20 11 26 06 06 12 86 52 6f |...4 .4 .&....Ro|
00000030 78 54 65 73 74 31 39 39 39 39 39 39 39 39 39 39 |xTest19999999999|

Receive this(remaining) once client connection is closed.

00000040 30 30 30 30 30 08 40 |00000.@|
00000047

Regards,

Shareef

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Alejandro Revilla

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Jan 20, 2020, 7:28:25 PM1/20/20

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I’m not sure I properly understand what those logs and dumps actually mean. What is the client? a jPOS based application or a third party one? Can you explain in more detail?

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chhil

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Jan 21, 2020, 1:04:28 AM1/21/20

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Alejandro,

Check the slack jpos support channel.

https://jpos.slack.com/archives/CHAB8RFKK/p1579265877000900

For clarity, netcat server was being used with a custom channel class that overrode some methods.

The netcat server displayed a partial message when the request was sent using the simple channel client.

-chhil

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Shareefuddin Mohammed

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Jan 21, 2020, 1:15:42 AM1/21/20

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Hi Alejandro,

Thanks for helping me.

Client is a jPOS based application and trying to send request to Netcat server using NACChannel.

My requirement is to add 2 byte length header prepended to ISO message.

Length header(2 byte) + ISO message

Length header should include length of message too.

Ex: If length of message = 69 bytes then length header should be 69 + 2 = 71 bytes which is hex 47 but netcat server is showing only 69 bytes(hex 45).

1. Code using Netcat as server:

import java.io.IOException;
import org.jpos.core.Configuration;
import org.jpos.core.ConfigurationException;
import org.jpos.core.SimpleConfiguration;
import org.jpos.iso.ISOBasePackager;
import org.jpos.iso.ISOException;
import org.jpos.iso.ISOMsg;
import org.jpos.iso.ISOServer;
import org.jpos.iso.ISOUtil;
import org.jpos.iso.channel.NACChannel;
import org.jpos.iso.packager.GenericPackager;
import org.jpos.util.Logger;
import org.jpos.util.SimpleLogListener;
import org.jpos.util.ThreadPool;

public class NACChannelTestChhil {
int lenlen = 2;
public static void main(String[] args) throws IOException, ISOException {
createISOMessage();
}

public static byte[] createISOMessage() throws ISOException {
Thread t;
String HOST = "127.0.0.1";
int PORT = 9300;
ISOServer server;
Logger l = new Logger();
l.addListener(new SimpleLogListener());

// Create Packager based on XML that contain DE type

GenericPackager packager = new GenericPackager("resources/fields.xml");

NACChannel nacchannel = new NACChannel();
nacchannel.setLogger(l, "channel");
nacchannel.setHost(HOST, PORT);

ISOMsg isoMsg = build200ISOMessage(packager);

      byte[] message = isoMsg.pack();
try {
nacchannel.setPackager(packager);
SimpleConfiguration cfg = new SimpleConfiguration();
cfg.put("include-header-length", Boolean.TRUE);
nacchannel.setConfiguration(cfg);
            nacchannel.connect();
nacchannel.send(isoMsg);
if (nacchannel.isConnected()) {
System.out.println("Connected");
ISOMsg isoMsgResp = nacchannel.receive();                         // Getting EOFException here
System.out.println("isoMsgResp "+isoMsgResp);
}
} catch (Exception e) {
System.out.println("Exception in sending msg");
e.printStackTrace();
}
return message;

}

private static ISOMsg build200ISOMessage(ISOBasePackager packager) throws ISOException {
// Create ISO Message
ISOMsg isoMsg = new ISOMsg();
isoMsg.setPackager(packager);
isoMsg.setMTI("0100");
isoMsg.set("2", "6006491286999980958");
isoMsg.set("3", "310000");
isoMsg.set("4", "000000000000");

isoMsg.set("11", "020820");
isoMsg.set("12", "020820");
isoMsg.set("13", "0120");

isoMsg.set("32", "061286");
isoMsg.set("41", "RoxTest1");
isoMsg.set("42", "999999999900000");

isoMsg.set("49", "840");
return isoMsg;
}

}

Result Netcat server:

00000000 00 45 30 31 30 30 70 38 00 01 00 c0 80 00 13 06 |.E0100p8........| --> Length is showing as '00 45' instead it should be '00 47'

00000010 00 64 91 28 69 99 98 09 58 31 00 00 00 00 00 00 |.d.(i...X1......|

00000020 00 00 02 08 20 02 08 20 01 20 06 06 12 86 52 6f |.... .. . ....Ro|
00000030 78 54 65 73 74 31 39 39 39 39 39 39 39 39 39 39 |xTest19999999999| --> Showing upto here until Java application shutdown

00000040 30 30 30 30 30 08 40 |00000.@| --> Once Java application shutdown(Eclipse Terminate) then showing this line of output

00000047

2. Code using ISOServer as server :

import java.io.IOException;
import org.jpos.core.Configuration;
import org.jpos.core.ConfigurationException;
import org.jpos.core.SimpleConfiguration;
import org.jpos.iso.ISOBasePackager;
import org.jpos.iso.ISOException;
import org.jpos.iso.ISOMsg;
import org.jpos.iso.ISOServer;
import org.jpos.iso.ISOUtil;
import org.jpos.iso.channel.NACChannel;
import org.jpos.iso.packager.GenericPackager;
import org.jpos.util.Logger;
import org.jpos.util.SimpleLogListener;
import org.jpos.util.ThreadPool;

public class NACChannelTestChhil {
int lenlen = 2;
public static void main(String[] args) throws IOException, ISOException {
createISOMessage();
}

public static byte[] createISOMessage() throws ISOException {
Thread t;
String HOST = "127.0.0.1";
int PORT = 9300;
ISOServer server;
Logger l = new Logger();
l.addListener(new SimpleLogListener());

// Create Packager based on XML that contain DE type

GenericPackager packager = new GenericPackager("resources/fields.xml");

NACChannel nacchannel = new NACChannel();
nacchannel.setLogger(l, "channel");
nacchannel.setHost(HOST, PORT);

ISOMsg isoMsg = build200ISOMessage(packager);

byte[] message = isoMsg.pack();
try {
nacchannel.setPackager(packager);
SimpleConfiguration cfg = new SimpleConfiguration();
cfg.put("include-header-length", Boolean.TRUE);
nacchannel.setConfiguration(cfg);

server = new ISOServer(PORT, nacchannel, new ThreadPool());
server.setLogger(l, "server");

server.addISORequestListener((source, m) -> {
try {
m.setResponseMTI();
m.dump(System.out, "Received");
source.send(m);
return false;
}
catch (ISOException | IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return false;
});

t = new Thread(server);
t.start();

nacchannel.connect();
nacchannel.send(isoMsg);
if (nacchannel.isConnected()) {
System.out.println("Connected");
ISOMsg isoMsgResp = nacchannel.receive();
System.out.println("isoMsgResp "+isoMsgResp);
}
} catch (Exception e) {
System.out.println("Exception in sending msg");
e.printStackTrace();
}
return message;

}

private static ISOMsg build200ISOMessage(ISOBasePackager packager) throws ISOException {
// Create ISO Message
ISOMsg isoMsg = new ISOMsg();
isoMsg.setPackager(packager);
isoMsg.setMTI("0100");
isoMsg.set("2", "6006491286999980958");
isoMsg.set("3", "310000");
isoMsg.set("4", "000000000000");

isoMsg.set("11", "020820");
isoMsg.set("12", "020820");
isoMsg.set("13", "0120");

isoMsg.set("32", "061286");
isoMsg.set("41", "RoxTest1");
isoMsg.set("42", "999999999900000");

isoMsg.set("49", "840");
return isoMsg;
}

}

Result :-

<log realm="server" at="2020-01-21T11:32:49.267">
<iso-server>
listening on port 9300
</iso-server>
</log>
<log realm="channel/127.0.0.1:9300" at="2020-01-21T11:32:49.280" lifespan="14ms">
<connect>
Try 0 127.0.0.1:9300
</connect>
</log>
<log realm="channel/127.0.0.1:9300" at="2020-01-21T11:32:49.280">

<field id="49" value="840"/>
</isomsg>
</send>
</log>
Connected
<log realm="server.session/127.0.0.1:42968" at="2020-01-21T11:32:49.280">
<session-start/>
</log>
<log realm="channel/127.0.0.1:42968" at="2020-01-21T11:32:49.281">
<receive>
<isomsg direction="incoming">

<field id="49" value="840"/>
</isomsg>
</receive>
</log>
Received<isomsg direction="incoming">
Received 
Received <field id="0" value="0110"/>
Received <field id="2" value="6006491286999980958"/>
Received <field id="3" value="310000"/>
Received <field id="4" value="000000000000"/>
Received <field id="11" value="020820"/>
Received <field id="12" value="020820"/>
Received <field id="13" value="0120"/>
Received <field id="32" value="061286"/>
Received <field id="41" value="RoxTest1"/>
Received <field id="42" value="999999999900000"/>
Received <field id="49" value="840"/>
Received</isomsg>
<log realm="channel/127.0.0.1:42968" at="2020-01-21T11:32:49.282" lifespan="1ms">

<field id="49" value="840"/>
</isomsg>
</receive>
</log>
isoMsgResp In: 0110 020820 RoxTest1

3. Code using Netcat as server(overriding sendMessageLength and getMessageLength methods) :

import org.jpos.core.SimpleConfiguration;
import org.jpos.iso.ISOException;
import org.jpos.iso.ISOMsg;
import org.jpos.iso.ISOServer;
import org.jpos.iso.packager.GenericPackager;
import java.io.*;
import org.jpos.iso.channel.NACChannel;
import org.jpos.iso.ISOBasePackager;
import org.jpos.util.Logger;
import org.jpos.util.SimpleLogListener;
import org.jpos.util.ThreadPool;

public class NACChannelTest extends NACChannel {
int lenlen = 0;
public static void main(String[] args) throws IOException, ISOException {
createISOMessage();
}

public static byte[] createISOMessage() throws ISOException {
String HOST = "127.0.0.1";
int PORT = 9300;
ISOServer server;
Thread t;

Logger l = new Logger();
l.addListener(new SimpleLogListener());

// Create Packager based on XML that contain DE type
ISOBasePackager packager = new GenericPackager("resources/fields.xml");

NACChannelTest nacchannel = new NACChannelTest();
nacchannel.setHost(HOST, PORT);
nacchannel.setLogger(l, "channel");

ISOMsg isoMsg = build200ISOMessage(packager);

// Get and print the output result
byte[] message = isoMsg.pack();

try {
nacchannel.setPackager(isoMsg.getPackager());

SimpleConfiguration cfg = new SimpleConfiguration();
cfg.put("include-header-length", Boolean.TRUE);
nacchannel.setConfiguration(cfg);

nacchannel.connect();
nacchannel.send(isoMsg);
if (nacchannel.isConnected()) {
System.out.println("Connected");
nacchannel.getMessageLength();
ISOMsg isoMsgResp = nacchannel.receive();                                       // Getting EOFException here
System.out.println("isoMsgResp "+isoMsgResp);
}

} catch (Exception e) {
System.out.println("Exception in sending msg");
e.printStackTrace();
}
return message;
}

protected void sendMessageLength(int len) throws IOException {
len += 2;
serverOut.write (len >> 8);
serverOut.write (len);
serverOut.flush();
}

protected int getMessageLength() throws IOException, ISOException {
int l = 0;
byte[] b = new byte[2];
while (l == 0) {
System.out.println("Avail "+serverIn.available());                                                 // "Avail 0" is printing here
serverIn.readFully(b, 0, 2);                                                                                   // EOFException he
l = ((((int) b[0]) & 0xFF) << 8) | (((int) b[1]) & 0xFF);
if (l == 0) {
serverOut.write(b);
serverOut.flush();
}
}
return l;

}

private static ISOMsg build200ISOMessage(ISOBasePackager packager) throws ISOException {
// Create ISO Message
ISOMsg isoMsg = new ISOMsg();
isoMsg.setPackager(packager);
isoMsg.setMTI("0100");
isoMsg.set("2", "6006491286999980958");
isoMsg.set("3", "310000");
isoMsg.set("4", "000000000000");

isoMsg.set("11", "044620");
isoMsg.set("12", "044620");
isoMsg.set("13", "0117");

isoMsg.set("32", "061286");
isoMsg.set("41", "RoxTest1");
isoMsg.set("42", "999999999900000");

isoMsg.set("49", "840"); return isoMsg;
}

private static void logISOMsg(ISOMsg msg) {
System.out.println("----ISO MESSAGE-----");
try {
System.out.println(" MTI : " + msg.getMTI());
for (int i = 1; i <= msg.getMaxField(); i++) {
if (msg.hasField(i)) {
System.out.println(" Field-" + i + " : "
+ msg.getString(i));
}
}
} catch (ISOException e) {
e.printStackTrace();
} finally {
System.out.println("--------------------");
}
}

}

My packager xml file :

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE isopackager PUBLIC
"-//jPOS/jPOS Generic Packager DTD 1.0//EN"
"http://jpos.org/dtd/generic-packager-1.0.dtd">



<isopackager>
<isofield
id="0"
length="4"
name="MESSAGE TYPE INDICATOR"
pad="true"
class="org.jpos.iso.IFA_NUMERIC"/>
<isofield
id="1"
length="16"
name="BIT MAP"
class="org.jpos.iso.IFB_BITMAP"/>
<isofield
id="2"
length="19"
name="PAN - PRIMARY ACCOUNT NUMBER"
pad="true"
class="org.jpos.iso.IFB_LLHNUM"/>
<isofield
id="3"
length="6"
name="PROCESSING CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="4"
length="12"
name="AMOUNT, TRANSACTION"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="5"
length="12"
name="AMOUNT, SETTLEMENT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="6"
length="12"
name="AMOUNT, CARDHOLDER BILLING"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="7"
length="10"
name="TRANSMISSION DATE AND TIME"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="8"
length="8"
name="AMOUNT, CARDHOLDER BILLING FEE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="9"
length="8"
name="CONVERSION RATE, SETTLEMENT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="10"
length="8"
name="CONVERSION RATE, CARDHOLDER BILLING"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="11"
length="6"
name="SYSTEM TRACE AUDIT NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="12"
length="6"
name="TIME, LOCAL TRANSACTION"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="13"
length="4"
name="DATE, LOCAL TRANSACTION"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="14"
length="4"
name="DATE, EXPIRATION"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="15"
length="4"
name="DATE, SETTLEMENT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="16"
length="4"
name="DATE, CONVERSION"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="17"
length="4"
name="DATE, CAPTURE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="18"
length="4"
name="MERCHANTS TYPE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="19"
length="3"
name="ACQUIRING INSTITUTION COUNTRY CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="20"
length="3"
name="PAN EXTENDED COUNTRY CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="21"
length="3"
name="FORWARDING INSTITUTION COUNTRY CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="22"
length="3"
name="POINT OF SERVICE ENTRY MODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="23"
length="3"
name="CARD SEQUENCE NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="24"
length="3"
name="NETWORK INTERNATIONAL IDENTIFIEER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="25"
length="2"
name="POINT OF SERVICE CONDITION CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="26"
length="2"
name="POINT OF SERVICE PIN CAPTURE CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="27"
length="1"
name="AUTHORIZATION IDENTIFICATION RESP LEN"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="28"
length="9"
name="AMOUNT, TRANSACTION FEE"
pad="true"
class="org.jpos.iso.IFB_AMOUNT"/>
<isofield
id="29"
length="9"
name="AMOUNT, SETTLEMENT FEE"
pad="true"
class="org.jpos.iso.IFB_AMOUNT"/>
<isofield
id="30"
length="9"
name="AMOUNT, TRANSACTION PROCESSING FEE"
pad="true"
class="org.jpos.iso.IFB_AMOUNT"/>
<isofield
id="31"
length="9"
name="AMOUNT, SETTLEMENT PROCESSING FEE"
pad="true"
class="org.jpos.iso.IFB_AMOUNT"/>
<isofield
id="32"
length="11"
name="ACQUIRING INSTITUTION IDENT CODE"
pad="true"
class="org.jpos.iso.IFB_LLHNUM"/>
<isofield
id="33"
length="11"
name="FORWARDING INSTITUTION IDENT CODE"
pad="false"
class="org.jpos.iso.IFB_LLNUM"/>
<isofield
id="34"
length="28"
name="PAN EXTENDED"
class="org.jpos.iso.IFB_LLCHAR"/>
<isofield
id="35"
length="37"
name="TRACK 2 DATA"
pad="false"
class="org.jpos.iso.IFB_LLNUM"/>
<isofield
id="36"
length="104"
name="TRACK 3 DATA"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="37"
length="12"
name="RETRIEVAL REFERENCE NUMBER"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="38"
length="6"
name="AUTHORIZATION IDENTIFICATION RESPONSE"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="39"
length="2"
name="RESPONSE CODE"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="40"
length="3"
name="SERVICE RESTRICTION CODE"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="41"
length="8"
name="CARD ACCEPTOR TERMINAL IDENTIFICACION"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="42"
length="15"
name="CARD ACCEPTOR IDENTIFICATION CODE"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="43"
length="40"
name="CARD ACCEPTOR NAME/LOCATION"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="44"
length="25"
name="ADITIONAL RESPONSE DATA"
class="org.jpos.iso.IFB_LLCHAR"/>
<isofield
id="45"
length="76"
name="TRACK 1 DATA"
class="org.jpos.iso.IFB_LLCHAR"/>
<isofield
id="46"
length="999"
name="ADITIONAL DATA - ISO"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="47"
length="999"
name="ADITIONAL DATA - NATIONAL"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="48"
length="999"
name="ADITIONAL DATA - PRIVATE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="49"
length="3"
name="CURRENCY CODE, TRANSACTION"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="50"
length="3"
name="CURRENCY CODE, SETTLEMENT"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="51"
length="3"
name="CURRENCY CODE, CARDHOLDER BILLING"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="52"
length="8"
name="PIN DATA"
class="org.jpos.iso.IFB_BINARY"/>
<isofield
id="53"
length="16"
name="SECURITY RELATED CONTROL INFORMATION"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="54"
length="120"
name="ADDITIONAL AMOUNTS"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="55"
length="999"
name="RESERVED ISO"
class="org.jpos.iso.IFB_LLLBINARY"/>
<isofield
id="56"
length="999"
name="RESERVED ISO"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="57"
length="999"
name="RESERVED NATIONAL"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="58"
length="999"
name="RESERVED NATIONAL"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="59"
length="999"
name="RESERVED NATIONAL"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="60"
length="999"
name="RESERVED PRIVATE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="61"
length="999"
name="RESERVED PRIVATE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="62"
length="999"
name="RESERVED PRIVATE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="63"
length="999"
name="RESERVED PRIVATE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="64"
length="8"
name="MESSAGE AUTHENTICATION CODE FIELD"
class="org.jpos.iso.IFB_BINARY"/>
<isofield
id="65"
length="1"
name="BITMAP, EXTENDED"
class="org.jpos.iso.IFB_BINARY"/>
<isofield
id="66"
length="1"
name="SETTLEMENT CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="67"
length="2"
name="EXTENDED PAYMENT CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="68"
length="3"
name="RECEIVING INSTITUTION COUNTRY CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="69"
length="3"
name="SETTLEMENT INSTITUTION COUNTRY CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="70"
length="3"
name="NETWORK MANAGEMENT INFORMATION CODE"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="71"
length="4"
name="MESSAGE NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="72"
length="4"
name="MESSAGE NUMBER LAST"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="73"
length="6"
name="DATE ACTION"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="74"
length="10"
name="CREDITS NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="75"
length="10"
name="CREDITS REVERSAL NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="76"
length="10"
name="DEBITS NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="77"
length="10"
name="DEBITS REVERSAL NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="78"
length="10"
name="TRANSFER NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="79"
length="10"
name="TRANSFER REVERSAL NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="80"
length="10"
name="INQUIRIES NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="81"
length="10"
name="AUTHORIZATION NUMBER"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="82"
length="12"
name="CREDITS, PROCESSING FEE AMOUNT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="83"
length="12"
name="CREDITS, TRANSACTION FEE AMOUNT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="84"
length="12"
name="DEBITS, PROCESSING FEE AMOUNT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="85"
length="12"
name="DEBITS, TRANSACTION FEE AMOUNT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="86"
length="16"
name="CREDITS, AMOUNT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="87"
length="16"
name="CREDITS, REVERSAL AMOUNT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="88"
length="16"
name="DEBITS, AMOUNT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="89"
length="16"
name="DEBITS, REVERSAL AMOUNT"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="90"
length="42"
name="ORIGINAL DATA ELEMENTS"
pad="true"
class="org.jpos.iso.IFB_NUMERIC"/>
<isofield
id="91"
length="1"
name="FILE UPDATE CODE"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="92"
length="2"
name="FILE SECURITY CODE"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="93"
length="6"
name="RESPONSE INDICATOR"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="94"
length="7"
name="SERVICE INDICATOR"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="95"
length="42"
name="REPLACEMENT AMOUNTS"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="96"
length="16"
name="MESSAGE SECURITY CODE"
class="org.jpos.iso.IFB_BINARY"/>
<isofield
id="97"
length="17"
name="AMOUNT, NET SETTLEMENT"
pad="false"
class="org.jpos.iso.IFB_AMOUNT"/>
<isofield
id="98"
length="25"
name="PAYEE"
class="org.jpos.iso.IF_CHAR"/>
<isofield
id="99"
length="11"
name="SETTLEMENT INSTITUTION IDENT CODE"
pad="false"
class="org.jpos.iso.IFB_LLNUM"/>
<isofield
id="100"
length="11"
name="RECEIVING INSTITUTION IDENT CODE"
pad="false"
class="org.jpos.iso.IFB_LLNUM"/>
<isofield
id="101"
length="17"
name="FILE NAME"
class="org.jpos.iso.IFB_LLCHAR"/>
<isofield
id="102"
length="28"
name="ACCOUNT IDENTIFICATION 1"
class="org.jpos.iso.IFB_LLCHAR"/>
<isofield
id="103"
length="28"
name="ACCOUNT IDENTIFICATION 2"
class="org.jpos.iso.IFB_LLCHAR"/>
<isofield
id="104"
length="100"
name="TRANSACTION DESCRIPTION"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="105"
length="999"
name="RESERVED ISO USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="106"
length="999"
name="RESERVED ISO USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="107"
length="999"
name="RESERVED ISO USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="108"
length="999"
name="RESERVED ISO USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="109"
length="999"
name="RESERVED ISO USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="110"
length="999"
name="RESERVED ISO USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="111"
length="999"
name="RESERVED ISO USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="112"
length="999"
name="RESERVED NATIONAL USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="113"
length="999"
name="RESERVED NATIONAL USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="114"
length="999"
name="RESERVED NATIONAL USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="115"
length="999"
name="RESERVED NATIONAL USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="116"
length="999"
name="RESERVED NATIONAL USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="117"
length="999"
name="RESERVED NATIONAL USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="118"
length="999"
name="RESERVED NATIONAL USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="119"
length="999"
name="RESERVED NATIONAL USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="120"
length="999"
name="RESERVED PRIVATE USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="121"
length="999"
name="RESERVED PRIVATE USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="122"
length="999"
name="RESERVED PRIVATE USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="123"
length="999"
name="RESERVED PRIVATE USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="124"
length="999"
name="RESERVED PRIVATE USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="125"
length="999"
name="RESERVED PRIVATE USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="126"
length="999"
name="RESERVED PRIVATE USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="127"
length="999"
name="RESERVED PRIVATE USE"
class="org.jpos.iso.IFB_LLLCHAR"/>
<isofield
id="128"
length="8"
name="MAC 2"
class="org.jpos.iso.IFB_BINARY"/>
</isopackager>

Please check and update what I am doing wrong.

Thanks,

Shareef

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Alejandro Revilla

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Jan 21, 2020, 4:06:27 PM1/21/20

to jPOS Users

You want to use the regular NACChannel and set the 'include-header-length' to true in your configuration.

I suggest you take a look at http://jpos.org/tutorials, your life will be much easier.

You just need to add:

to your NACChannel config.

--

@apr

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Shareefuddin Mohammed

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Jan 23, 2020, 6:49:22 AM1/23/20

to jpos-...@googlegroups.com

Hi Alejandro and Chhil,

Thanks for helping me !!!

Able to prepare required format and send it to server, but still server unable to recognize the format.

Getting [AR] from them so checking with them the root cause.

I have a doubt : Is NACChannel sends request in hex format?

Regards,

Shareef

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Alejandro Revilla

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Feb 8, 2020, 5:06:38 PM2/8/20

to jPOS Users

I have a doubt : Is NACChannel sends request in hex format?

NACChannel sends the length as two bytes in network byte order (also called BIG ENDIAN).

HEXChannel sends the length in four hexadecimal ASCII characters.

chhil

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Feb 9, 2020, 9:30:09 PM2/9/20

to jpos-...@googlegroups.com

Alejandro,

This was resolved in the jpos slack support channel.

To sum up the changes, Shareefuddin used the NACChannel with the include length of length in the length header configuration property.

Then he was told to use stunnel as it needed to be TLS, which worked. 

Following which he added the TLS supported at the channel level to avoid using stunnel.

Finally TLS worked for him in one version of JDK and not in the other and he has been debugging it with java's supported property to log all debug TLS info. Which now is out of the jpos domain and into pure java.

-chhil

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Shareefuddin Mohammed

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Feb 10, 2020, 1:14:54 AM2/10/20

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Hi Alenjandro/Chhil,

Thanks for helping.

Issue has been fixed using JPOS_2.1.3 and Java 8 and I am using Java 8.

I'll contact Constantino for JPOS license..

Regards,

Shareef

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