Hi,
I'm using snmp4j 1.11.1 in our application and occasionally, we're seeing this
exception encountered when trying to send an SNMP get request:
org.snmp4j.MessageException: Protocol family unavailable
at
org.snmp4j.MessageDispatcherImpl.sendPdu(MessageDispatcherImpl.java:485)[195:org.snmp4j:1.11.1]
at
org.snmp4j.util.MultiThreadedMessageDispatcher.sendPdu(MultiThreadedMessageDispatcher.java:146)[195:org.snmp4j:1.11.1]
at
org.snmp4j.Snmp.sendMessage(Snmp.java:1082)[195:org.snmp4j:1.11.1]
at org.snmp4j.Snmp.send(Snmp.java:971)[195:org.snmp4j:1.11.1]
at org.snmp4j.Snmp.send(Snmp.java:955)[195:org.snmp4j:1.11.1]
...
... (stack truncated)
I looked at the snmp4j code for 1.11.1 and it basically catches an IOException
and wraps only the message from the exception into the "MessageException" as
below:
Line 485: throw new MessageException(iox.getMessage());
1) Any idea what would cause the IOException to be thrown?
2) If the code set the IOException as the cause of the MessageException,
we could unwind the whole exception cause chain, and find out the root cause of
the IOException, like:
throw new MessageException( iox );
Thanks,
Syed
Syed F. Ali
CA Technologies
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