connect to netcat server

pks!!@

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Dec 30, 2016, 7:30:15 AM12/30/16

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Hi,

I am trying to send request to Netcat server (running on my local machine) using MUX but not getting success.

I am using as below code :

MUX modMux = QMUX.getMUX(this.cfg.get("target"));

ISOMsg resp = modMux.request(req, this.cfg.getLong("timeout"));

310_ubi_mux.xml file is as below

<?xml version="1.0" ?>

<in>receive</in>

</mux>

311_ubi_channel.xml file is as below

<?xml version="1.0" ?>

<channel-adaptor name='adaptor' class="org.jpos.q2.iso.ChannelAdaptor" logger="Q2">

</channel>

<out>receive</out>

<reconnect-delay>10000</reconnect-delay>

</channel-adaptor>

chhil

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Dec 30, 2016, 7:46:31 AM12/30/16

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​Go through your Q2 log. Spot exceptions if any.

Make sure ​

​your files show up as deployed and without errors.

​Look for entries which indicate that your client connected to the server.
Provide snippet of your ​

​class that contains request being made with the mux.​

-chhil

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pks!!@

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Dec 30, 2016, 8:06:13 AM12/30/16

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Hi,

I am gettins as below in log.

<log realm="org.jpos.q2.iso.ChannelAdaptor" at="Fri Dec 30 18:26:11 IST 2016.225">
<warn>
channel-receiver-ubi-host-receive
<exception name="null">
java.lang.NullPointerException
at org.jpos.iso.BaseChannel.createISOMsg(BaseChannel.java:609)
at org.jpos.iso.BaseChannel.createMsg(BaseChannel.java:606)
at org.jpos.iso.BaseChannel.receive(BaseChannel.java:634)
at org.jpos.q2.iso.ChannelAdaptor$Receiver.run(ChannelAdaptor.java:295)
at java.lang.Thread.run(Thread.java:745)
</exception>
</warn>
</log>

1st I started Netcat serevr & it runs very well.

But, I am not getting able to connect Netcat server through code. On first time startup my client code ( to send request ) Netcat server goes disconnect.

Class Snippet from where i am trying to send request.

public class TestNetcat extends TxnSupport implements TransactionParticipant {

@Override

public void setConfiguration(Configuration cfg) throws ConfigurationException {

this.cfg = cfg;

}

@Override

public void prepare(long l, Serializable context) {

TxnContext ctx = (TxnContext) context;

ctx.checkPoint("start" + new Date());

try {

ISOMsg req = (ISOMsg) ctx.get("RMT");

MUX modMux = QMUX.getMUX(this.cfg.get("target"));

ISOMsg resp = modMux.request(req, this.cfg.getLong("timeout"));

if (resp != null) {

}else{

System.out.println("Response NULL !!");

}

} catch (Exception e) {

e.printStackTrace();

}

@Override

public void commit(long l, Serializable srlzbl) {

}

@Override

public void abort(long l, Serializable srlzbl) {

}

Please guide me in right way.

Thanks & Regards

PKS

chhil

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Dec 30, 2016, 8:43:08 AM12/30/16

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Do you see something like this in the log?

<log realm="channel/127.0.0.1:3660" at="Fri Dec 30 18:52:26 IST 2016.977" lifespan="1ms">
  <connect>
    localhost:3660
  </connect>
</log>

In your mux deploy add

<ready>adaptor.ready</ready> <!-- needs to be channel adaptor name + .ready-->

When you from the request from the participant, use the mux.isconnected() to check if its connected before sending the message.

-chhil

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chhil

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Dec 30, 2016, 8:55:53 AM12/30/16

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One ore thing.... you should change your file numbering, have the channel deploy file prefixed number smaller than the mux deploy file prefixed number.

This way the channel initializes before the mux and does its connection. This way you wont run into a timing issue.

-chhil

pks!!@

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Jan 2, 2017, 12:55:22 AM1/2/17

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Hi Sir,

Sorry for delay.

Thanks for your guide. I did proper changes as per your instructions,

now my files are as below.

210_channel.xml

<?xml version="1.0" ?>

<channel-adaptor name='adaptor' class="org.jpos.q2.iso.ChannelAdaptor" logger="Q2">

</channel>

<out>xx-host-receive</out>

<reconnect-delay>10000</reconnect-delay>

</channel-adaptor>

211_mux.xml

<?xml version="1.0" ?>

<in>xx-host-receive</in>

<ready>adaptor.ready</ready>

</mux>

But, I am getting same error.When i start my application & at the time of deploy

my application shows as below error & net-cat server get disconnected without show any error on console.

<info>

au-34 start

</info>

</log>

<info>

au-19 start

</info>

</log>

<info>

au-27 start

</info>

</log>

<warn>

channel-receiver-host-receive

java.lang.NullPointerException

at org.jpos.iso.BaseChannel.createISOMsg(BaseChannel.java:609)

at org.jpos.iso.BaseChannel.createMsg(BaseChannel.java:606)

at org.jpos.iso.BaseChannel.receive(BaseChannel.java:634)

at org.jpos.q2.iso.ChannelAdaptor$Receiver.run(ChannelAdaptor.java:295)

at java.lang.Thread.run(Thread.java:745)

</exception>

</warn>

</log>

<info>

au-17 start

</info>

</log>

Here my point is that, as per my knowledge netcat server runs & accept on TCP than,

is above xml configuration file (210_channel.xml) correct way to connect this server.

Please point me, where am i missing?

Thanks & regards

pks

Victor Salaman

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Jan 2, 2017, 1:08:01 AM1/2/17

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Your channel does not contain a packager... Please fix

<?xml version="1.0" ?>

<channel-adaptor name='adaptor' class="org.jpos.q2.iso.ChannelAdaptor" logger="Q2">

<channel name="xx-channel" class="org.jpos.iso.channel.ASCIIChannel" logger="Q2" realm="xx-channel"

packager="org.jpos.iso.packager.GenericPackager">

</channel>

<out>xx-host-receive</out>

<reconnect-delay>10000</reconnect-delay>

</channel-adaptor>

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pks!!@

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Jan 2, 2017, 1:44:38 AM1/2/17

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Hi,

Thanks for your right guidance.Now, it works.

But, here i have another requirement. I have to sent request ( hexdump of isomessage as string ) to a server, listening on TCP using MUX & above defined configuration file.

Please guide me the right process.

Thanks & Regards

pks

Victor Salaman

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Jan 2, 2017, 1:53:26 AM1/2/17

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You would need a packager to match what your endpoint is expecting (hexdump of isomessage as string). If you need additional guidance, may I suggest the jPOS programmer's guide, or you invest in consulting through sa...@jpos.org ?

/V

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Mark Salter

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Jan 2, 2017, 11:46:58 AM1/2/17

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On 02/01/17 06:44, pks!!@ wrote:
> But, here i have another requirement.

Then you really need a new thread/post?

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Mark

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