[SNMP4J] Snmp4j agent -- can print and store the incoming requests

[Frank Fock]

Hi Nitin,

AgenPro has a simulation agent built-in.
If you write one yourself, you should start with SNMP4J-Agent.

Best regards,
Frank
 

> On 19 Jan 2015, at 22:33, nitin sharma <kumarsharma.nitin at gmail.com> wrote:
> 
> hi,
> I would like to performance test my application (management) server. In practice this server interacts with multiple devices, but i cant get that many devices in my test environment.
> 
> So, my objective is to built a snmp agent simulator that i can use during load testing . This simulator need to act like various devices that exists in reality. 
> Hence, i would like to decode the incoming request, and based upon the input, change my response and send back to server.
> 
> Regards,
> Nitin Kumar Sharma.
> 
> 
> On Mon, Jan 19, 2015 at 12:36 PM, Frank Fock <fock at agentpp.com <mailto:fock at agentpp.com>> wrote:
> Hi Nitin,
> 
> Wha is your goal? Writing a SNMP agent?
> Then you should use SNMP4J-Agent on top of SNMP4J.
> Beginning writing a SNMP agent with SNMP4J from scratch needs a lot of SNMP know how.
> 
> SNMP4J-Agent already implements most of complex agent stuff.
> 
> But finally, what is the printing for?
> 
> Best regards,
> Frank
> 
> > On 19 Jan 2015, at 05:20, nitin sharma <kumarsharma.nitin at gmail.com <mailto:kumarsharma.nitin at gmail.com>> wrote:
> >
> > thanks Shivi...
> >
> > -- Kindly excuse me for this lengthy email.....
> >
> >
> > i looked at the CommandResponder interface, it does have "ProcessPdu". i
> > created a class ( Snmp_commandResponder) that implements this interface and
> > overrides ProcessPdu(CommandResponder event) method. right now i am just
> > printing event.toString() and getting the following text..
> >
> > ==========================
> > *processPdu received!CommandResponderEvent[securityModel=2,
> > securityLevel=1, maxSizeResponsePDU=65535, pduHandle=PduHandle[16071],
> > stateReference=StateReference[msgID=0,pduHandle=PduHandle[16071],securityEngineID=null,securityModel=null,securityName=public,securityLevel=1,contextEngineID=null,contextName=null,retryMsgIDs=null],
> > pdu=GETBULK[requestID=16071, errorStatus=Success(0), errorIndex=16, VBS[0.0
> > = Null]], messageProcessingModel=1, securityName=public, processed=false,
> > peerAddress=127.0.0.1/65469 <http://127.0.0.1/65469> <http://127.0.0.1/65469 <http://127.0.0.1/65469>>,
> > transportMapping=org.snmp4j.transport.DefaultUdpTransportMapping at 16f144c,
> > tmStateReference=null]*
> >
> > *=====================*
> >
> > However, CommandResponder doesn't have method for sending back the snmp
> > message. So, i looked at the CommandProcessor class in org.snmp4j.agent
> > package.. this class too have ProcessPdu method. Well, as a quick and dirty
> > way i changed my Snmp_commandResponder to extend from CommandProcessor and
> > in overwritten ProcessPdu method, i am calling super.ProcessPdu(event).
> >
> > My code is working, but i would like to know
> > a. if that is a correct way?
> > b. is the printed Pdu message (above) seems to be a correct one?
> > c. Is there a way i can get to know source server and port from where the
> > request to my client was originated ?
> >
> > my Code is attached as zip file to this email
> >
> >
> >
> > Regards,
> > Nitin Kumar Sharma.
> >
> >
> > On Thu, Jan 15, 2015 at 10:46 PM, Shivi Goel -X (shivigoe - NICHEPRO
> > TECHNOLOGIES PRIVATE LIMITED at Cisco) <shivigoe at cisco.com <mailto:shivigoe at cisco.com>> wrote:
> >
> >> Hi Nitin,
> >> An incoming request or notification is stored as an instance of
> >> CommandRespondentEvent class in snmp4j. This class gives you api to get pdu
> >> and other info.
> >> Please refer to the API doc:
> >> http://www.snmp4j.org/doc/org/snmp4j/CommandResponderEvent.html <http://www.snmp4j.org/doc/org/snmp4j/CommandResponderEvent.html>
> >>
> >> Regards,
> >> Shivi
> >>
> >> -----Original Message-----
> >> From: SNMP4J [mailto:snmp4j-bounces at agentpp.org <mailto:snmp4j-bounces at agentpp.org>] On Behalf Of nitin sharma
> >> Sent: Friday, January 16, 2015 7:35 AM
> >> To: snmp4j at agentpp.org <mailto:snmp4j at agentpp.org>
> >> Subject: [SNMP4J] Snmp4j agent -- can print and store the incoming requests
> >>
> >> HI team,
> >>
> >> I am building a Snmp4j agent code that will print the incoming Snmp
> >> request . is it possible scenario to be coded? if yes, then please do
> >> provide some guidance.
> >>
> >> Regards,
> >> Nitin Kumar Sharma.
> >> _______________________________________________
> >> SNMP4J mailing list
> >> SNMP4J at agentpp.org <mailto:SNMP4J at agentpp.org>
> >> https://oosnmp.net/mailman/listinfo/snmp4j <https://oosnmp.net/mailman/listinfo/snmp4j>
> >>
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