[SNMP4J] IOException - SEQUENCE length

[Frank Fock]

Bobby,

This exception means that your agent sometimes fails
to BER encode its responses correctly.
You can work around the agent's bug by calling the
following before using the Snmp class:
BER.setCheckSequenceLength(true);

Caution, this disables length checks which may impose
a security risk - OK, since we are using Java it is not
really a risk ;-)

Hope this helps.

Best regards,
Frank

Bobby Bosch wrote:

>Hi I am performing a snmp walk (GETBULK) using snmp with version 2c option.
>I am receiving abgout 650 proper responses, and then It stops and I get the
>following error:
>
> 
>
>java.io.IOException: The actual length of the SEQUENCE object
>org.snmp4j.smi.VariableBinding is 17, but 16 was expected
>
>at org.snmp4j.asn1.BER.checkSequenceLength(BER.java:853)
>
>at org.snmp4j.smi.VariableBinding.decodeBER(VariableBinding.java:145)
>
>at org.snmp4j.PDU.decodeBER(PDU.java:296)
>
>at org.snmp4j.mp.MPv2c.prepareDataElements(MPv2c.java:172)
>
>at
>org.snmp4j.MessageDispatcherImple.dispatchMessag(MessageDispatcherImpl.java:
>204)
>
>at
>org.snmp4j.MessageDispatcherImple.processMessage(MessageDispatcherImpl.java:
>263)
>
>at
>org.snmp4j.transport.DefaultUdpTransportMapping$ListenThread.run(DefaultUdpT
>ransportMapping.java:172)
>
> 
>
>Can anyone tell me what this means or is this a bug of some kind?
>
> 
>
>Thanks,
>
>Bobby
>
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