client channel receives io-timeout

[netma...@gmail.com]

Hi,

We received below logs in channel
<log realm="channel/172.16.20.34:39570" at="2017-11-10T16:19:54.717" lifespan="300110ms">
  <receive>
    <io-timeout/>
  </receive>
</log>

below is my server.xml
<server class="org.jpos.q2.iso.QServer" logger="Q2" name="TxnmgrServer">
    <attr name="port" type="java.lang.Integer">1111</attr>
    <attr name="maxSessions" type="java.lang.Integer">20</attr>   
    <attr name="minSessions" type="java.lang.Integer">10</attr>

    <channel name="ClientChannel" class="org.jpos.iso.channel.ASCIIChannel" logger="Q2"
             packager="com.iz.zealcon.txnmgr.packager.ISO93CustomizedPackager" >
             <!-- <property name="packager-config" value="cfg/iso93ascii.xml" /> -->
    </channel>
<!-- Filtering IP Address To Connect To Our Server
        <property name="allow" value="192.168.1.1" />
    -->
    <request-listener class="com.iz.zealcon.txnmgr.server.TxnMgrRequestListener" logger="Q2">
        <property name="space" value="tspace:mySpace"/><!-- transient:default" /> -->
        <property name="queue" value="TransactionQueue" />
        <property name="timeout" value="10000" />
    </request-listener>
   
   
</server>

below is my channel.xml
<channel-adaptor name='Test' class="org.jpos.q2.iso.ChannelAdaptor"
    logger="Q2">
    <!-- <channel class="org.jpos.iso.channel.ASCIIChannel" logger="Q2"
        packager="org.jpos.iso.packager.ISO93APackager">

        <property name="host" value="192.168.0.32" />
        <property name="port" value="1111" />
    </channel> -->
   
    <channel class="org.jpos.iso.channel.ASCIIChannel" logger="Q2"
        packager="org.jpos.iso.packager.GenericPackager">
<property name="packager-config" value="/home/client/jpostranslater/dist/cfg/iso8583_93.xml" />
        <property name="host" value="192.168.0.20" />
        <property name="port" value="1111" />
    </channel>
   
    <in>Test-SEND</in>
    <out>Test-RECEIVE</out>
    <reconnect-delay>10000</reconnect-delay>
</channel-adaptor>


Why does i received such error related to io-timeout?
I observed after having transaction immediately in 5 seconds, I received this error in channel, there is no such disconnection at server.

Please guide


Thanks,
prd

[chhil]

Long story short you need to configure a timeout in your client/server deploy files.

What you see in the log is thrown by this piece of jpos code.
https://github.com/jpos/jPOS/blob/master/jpos/src/main/java/org/jpos/iso/BaseChannel.java#L763-L766

Which leads to understanding the exception.

http://craftingjava.blogspot.in/2012/06/javaiointerruptedioexception.html

Which leads to http://jpos.org/blog/2014/04/you-want-a-timeout/

You need to set a timeout.

https://github.com/jpos/jPOS/blob/master/jpos/src/main/java/org/jpos/iso/BaseChannel.java#L1018

If you are not using the newer code the timeout is not set.

-chhil

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[netma...@gmail.com]

Hi Chil,

Thanks a lot for information. Here we haven't provided a timeout in channel or server, so by default it should take as 5 min.

What we observed that though we have sent request or received the response in channel, immediately after 5-10 seconds, we received io-timeout. Actualy if its default 5min, we shouldn't face the issue. However , there is no logs in server that channel has been disconnected at same time.

Please guide.


Thanks,
prd

To unsubscribe from this group and stop receiving emails from it, send an email to jpos-users+...@googlegroups.com.

[netma...@gmail.com]

Hi Chil,

Please find below logs for more details:
<log realm="channel/172.16.20.34:49112" at="2017-11-10T20:01:50.657" lifespan="1ms">
  <send>
    <isomsg direction="outgoing">
      <!-- org.jpos.iso.packager.GenericPackager[/home/client/jpostranslator/dist/cfg/iso8583_87.xml] -->
      <field id="0" value="0210"/>
      <field id="2" value="629887______6601"/>
      <field id="3" value="000000"/>
      <field id="4" value="000000010000"/>
      <field id="7" value="1110143149"/>
      <field id="11" value="107021"/>
      <field id="12" value="201649"/>
      <field id="13" value="1110"/>
      <field id="15" value="1110"/>
      <field id="18" value="4814"/>
      <field id="22" value="AEM"/>
      <field id="37" value="117314107021"/>
      <field id="38" value="729320"/>
      <field id="39" value="00"/>
      <field id="41" value="1       "/>
      <field id="49" value="840"/>
    </isomsg>
  </send>
</log>
<log realm="channel/172.16.20.34:58368" at="2017-11-10T20:01:54.710" lifespan="300103ms">
  <receive>
    <io-timeout/>
  </receive>
</log>

[chhil]

I am out of ideas, maybe someone else can assist you here.

One thing to note is the lifespan="300103ms" when your io-timeout is logged. That tells me is that your channel has been up for that long without any interaction (data) and hence it timed out.

Also not that the channel where you received the message is different from the channel that timed out 

Timeout : channel/172.16.20.34:58368

Message Received : channel/172.16.20.34:49112

-chhil

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