Hi,
I am running code similar to snmptrapd on linux server. Currently there
are no traps receiving on the system. I am getting Time Out. Is it a valid
behavior to timeout if there are no traps .
while (netsnmp_running)
{
trapd_update_config();
numfds = 0;
/* Initialize the descriptors to null set */
FD_ZERO(&readfds);
FD_ZERO(&writefds);
FD_ZERO(&exceptfds);
block = 0;
tvp = &timeout;
timerclear(tvp);
/* Set TimeOut as 5 sec */
tvp->tv_sec = 10;
tvp->tv_usec = 0;
/* Setting values in absence of SNMP */
snmp_select_info(&numfds, &readfds, tvp, &block);
if (block == 1)
tvp = NULL; /* block without timeout */
/* Adding an external event fds to read, write, excep fds.
* Returns biggest descriptor , when fd_sets ready for select(). */
netsnmp_external_event_info(&numfds, &readfds, &writefds,
&exceptfds);
/* Checking File Descriptor to Read */
/* Call to select with return value from snmp_select_info */
count = select(numfds, &readfds, &writefds, &exceptfds, tvp);
gettimeofday(&Now, 0);
/* IF found descriptor */
if (count > 0)
{
netsnmp_dispatch_external_events(&count, &readfds, &writefds,
&exceptfds);
/* If there any more events after external events then try SNMP
events */
if (count > 0)
{
/*Reads each snmp socket that has inputs*/
snmp_read(&readfds);
}
}
else
switch (count)
{
/* Cases depending number of descriptor */
case 0:
print ----> spLogErr("\n TIME OUT");
snmp_timeout();
break;
case -1:
spLogErr("\n Error at Select for Descriptor");
if (errno == EINTR)
continue;
snmp_log_perror("select");
netsnmp_running = 0;
break;
default:
spLogErr("\n %s::%d Default Running", __FUNCTION__,
__LINE__);
fprintf(stderr, "select returned %d\n", count);
netsnmp_running = 0;
}
Thanks & Regards
Jayshankar
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