Re: [pysnmp-users] Debugging SNMPv3 processing

[Ilya E. <il...@gl...>]

> I'm Using PySNMP 4.1.8a and am trying to debug a problem with processing
> of SNMPv3 trap/inform PDUs or lack thereof with little success.
> 
> My application is asynchronous and the examples and tutorial both
> mention calls to runDispatcher() periodically, which is noted terminates
> when there are no pending requests.

Assuming your application is trap receiver, make sure you register a dummy 
"job" to snmp engine before running dispatcher:

snmpEngine.transportDispatcher.jobStarted(1) # this job would never finish
snmpEngine.transportDispatcher.runDispatcher()

This would not let runDispatcher() ever finish.

> I've enabled debugging, however I'm not seeing any 'DBG: receiveMessage'
> messages that I receive when I run the example trapd code with debugging.

Do you in fact receive messages? Or it's rather a debugging issue? Have 
you enabled all debug categories like this:

debug.setLogger(debug.Debug('all'))

?

> Am I missing something? Is there something I should be using instead in
> order to receive traps?

Take a look at pysnmp/examples/v3arch/manager/ntfrcv.py script.

-ilya