I've got a loop that adds a 36 null vars to an get request PDU but after waiting for
synchronous processing of that request, I get only one value back. I copied this code
from elsewhere in my application where it works fine and I see nothing in the
adaptations that would cause it to fail here. This I what I've got:
...
size_t s;
struct snmp_pdu *pdu;
struct snmp_pdu *response;
struct variable_list *vars;
int status;
int count;
int retval;
// Base for speed, adminStatus, operStatus
oid ifoid[] = { 1, 3, 6, 1, 4, 1, 20540, 2, 1, 1, 1 };
// duplexStatus
oid dot3oid[] = { 1, 3, 6, 1, 2, 1, 10, 7, 2, 1, 19, 1 };
size_t oidSize;
pdu = snmp_pdu_create(SNMP_MSG_GET);
for (s = 0; s < numPort; ++s) {
oidSize = OID_LENGTH(ifoid);
ifoid[oidSize-1] = ports[s];
ifoid[oidSize-2] = 5;// Speed
snmp_add_null_var(pdu, ifoid, oidSize);
ifoid[oidSize-2] = 7;// AdminStatus
snmp_add_null_var(pdu, ifoid, oidSize);
ifoid[oidSize-2] = 8;// OperStatus
snmp_add_null_var(pdu, ifoid, oidSize);
oidSize = OID_LENGTH(dot3oid);
dot3oid[oidSize-1] = ports[s];
snmp_add_null_var(pdu, dot3oid, oidSize);
}
status = snmp_synch_response(ss, pdu, &response);
if (status == STAT_SUCCESS && response->errstat == SNMP_ERR_NOERROR) {
/*
* SUCCESS: Print the result variables
*/
/* manipuate the information ourselves */
for(count = 0, vars = response->variables;
vars;
++count, vars = vars->next_variable) {
snmp_log(LOG_ERR,
"Handling variable %d, rec %d, index %d, type %d\n",
count, count / 4, count % 4, vars->type);
...
But the last for loop only executes once. It appears that the response->variables
list is only one node long. Is there something clearly wrong in my code? I need
fresh eyes and no one else here knows SNMP at all. Thanks.
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