[SNMP4J] IOException - SEQUENCE length

[Bobby Bosch]

That stopped that error, now I am getting:

java.io.Exception: Invalid sequence encoding: 16
at org.snmp4j.smi.VariableBinding.decodeBER(VariableBinding.java:141)
at org.snmp4j.PDU.decodeBER(PDU.java:296)

could this be an issue with my snmp device not sending the correct data
back? (I only ask because it is a simulated device)

Thanks again,
-Bobby

-----Original Message-----
From: Frank Fock [mailto:fock at agentpp.com] 
Sent: Thursday, September 09, 2004 1:39 PM
To: Bobby Bosch
Cc: snmp4j at agentpp.org
Subject: Re: [SNMP4J] IOException - SEQUENCE length

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(DefaultUdp
T
>ransportMapping.java:172)
>
> 
>
>Can anyone tell me what this means or is this a bug of some kind?
>
> 
>
>Thanks,
>
>Bobby
>
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