Re: Strange error in test program...

On 08/04/2008, Kris van Rens <krisvanrens.list@gmail.com> wrote:

> I'm trying this now, but for some reason, I get stuck at the first
> object. Here's what I do:


> read_objid("IF-MIB::ifPhysAddress", if_oid, &if_oid_len);
>
> // Walk the list of IF-MIB::ifPhysAddress.x
> for (i = 0; i < 10; i++) {
> req = snmp_pdu_create(SNMP_MSG_GETNEXT);
> snmp_add_null_var(req, if_oid, if_oid_len);

> ret = snmp_synch_response(sess_h, req, &resp);
> if (ret != STAT_SUCCESS || resp->errstat != SNMP_ERR_NOERROR)
> goto out_snmp_synch_response;
>
>
> // DEBUG
> print_variable(resp->variables->name, resp->variables->name_length,
> resp->variables);

You need to update the 'if_oid' buffer with the OID from this response.

At the moment, you're asking for the same OID every time.

> Here's the output:
> ---
> # ./snmptest
>
> IF-MIB::ifPhysAddress.1 = STRING:
> IF-MIB::ifPhysAddress.1 = STRING:

which is why you get the same answer every time.

The key with GetNext is to use the results from one request
as the input to the next.

Dave

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