Re: [pysnmp-users] GETNEXT and maxRows

[Frédéric P. <fr...@fp...>]

Le jeudi 12 à 16:51, Frédéric Perrin a écrit :
> Hi Ilya,
>
> What Debian calls 4.2.5 is actually 4.2.5rc2. 

I'm getting confused somewhere... The file listed on the SF.net download
page as pysnmp-4.2.5.tar.gz contains a CHANGES file whose first line is
"Revision 4.2.5rc2", and the commit I list further down is not part of
it.

The file you linked to identifies itself as 4.2.6rc0, and lists that
commit under "Revision 4.2.5".

>                                               This means the Debian
> version is missing the following commit:
>
> Mon Aug 18 07:21:17 2014 UTC (5 months, 3 weeks ago) by elie
>
> CommandGenerator.getNext() & .getBulk() methods now support the
> maxCalls kwarg to limit the maximum number of request-response
> iterations to perform
>
> http://pysnmp.cvs.sourceforge.net/viewvc/pysnmp/pysnmp/pysnmp/entity/rfc3413/oneliner/cmdgen.py?r1=1.96&r2=1.97
>
> (with this change, the size of varBindTotalTable is compared to maxRows
> AFTER extending the table)
>
> Thanks Ilya, I think I need to take this with the Debian maintainer.
>
> Le jeudi 12 à 16:24, Ilya Etingof a écrit :
>> Hi Frédéric,
>>
>> Just checked the latest (development) pysnmp operation: with maxRows=1
>> it sends just one GETNEXT:
>>
>> http://pysnmp.cvs.sourceforge.net/viewvc/pysnmp/pysnmp/?view=tar
>>
>> ilya
>>
>> On 02/12/2015 06:14 PM, Frédéric Perrin wrote:
>>> Hi list,
>>>
>>> It seems that nextCmd() always sends one request too many. IOW, with the
>>> following:
>>>
>>>>>> print cmdgen.CommandGenerator().nextCmd(
>>> ...     cmdgen.CommunityData("public"),
>>> ...     cmdgen.UdpTransportTarget(("192.168.100.240", 161)),
>>> ...     "1.3.6.1.2.1.1.4.0",
>>> ...     lexicographicMode = True,
>>> ...     maxRows = 1)
>>> (None, Integer('noError'), Integer(0), [[(ObjectName(1.3.6.1.2.1.1.5.0),
>>> OctetString('dut-1'))]])
>>>
>>> Wireshark shows two GETNEXT being sent (and responded to), even though
>>> only the first response is returned to me. I was expecting only one
>>> request to be sent, as per maxRows.
>>>
>>> Am I doing something wrong? Or is there an off-by-one somewhere in
>>> pysnmp?
>>>
>>> I'm running with python-pysnmp4 4.2.5-1 on Debian Sid.
>>>
>>> Cheers,
>>>
>>

-- 
Fred