Hello Robert, Wes,... please help!
I wonder how can be some request droped from the registered handler in some
special case, when I don't want to be snmp pdu genereated and returned to
the manager above?
To be a little more specific: I've registered handler 'HandleR' that takes
care for data, retriving from underlying drivers communicating directly
with hardware through proprietary protocol. If timeout on my device for the
first time occurs, I don't wanna generate snmp pdu with error, but just want
to drop request and do not respond at all. Of course, error event is written
to the syslog of the device.
I looked at the net-snmp code, but couldn't find any flag that I can setup
from the HandleR itself. No matter what kind of exit status HandleR have,
after that netsnmp_handle_request(...) is called, which doesn't foreseen
this kind of behaviour (I will be very pleased, if i'm wrong...).
TRACE
=============================================
verbose:asp: asp 0xa267d60 reqinfo 0xa268d48 assigned to request
trace: netsnmp_add_varbind_to_cache(): snmp_agent.c, 1899:
verbose:asp: asp 0xa267d60 reqinfo 0xa268d48 assigned to request
trace: netsnmp_call_handlers(): agent_handler.c, 498:
handler:calling: main handler bulk_to_next
trace: netsnmp_call_handler(): agent_handler.c, 418:
handler:calling: calling handler bulk_to_next for mode GET
trace: netsnmp_call_handler(): agent_handler.c, 426:
handler:returned: handler bulk_to_next returned 0
trace: netsnmp_call_handler(): agent_handler.c, 418:
handler:calling: calling handler alarmDescrText for mode GET
trace: row_idx_helper_itr_can_next(): itr_helpers.c, 1556:
Called 'row_idx_helper_itr_can_next' with root oid:
.1.3.6.1.4.1.1448.2.10.1.1.1.1.4.2.101
returned object size: 10, exit code: 0
trace: netsnmp_call_handler(): agent_handler.c, 426:
handler:returned: handler alarmDescrText returned 0
trace: netsnmp_handle_request(): snmp_agent.c, 2975:
^^^^^^^^^^^^^^^^^^^^^^^^
results: request results (status = 0):
trace: netsnmp_handle_request(): snmp_agent.c, 2978:
results: trace: sprint_realloc_by_type(): mib.c, 1975:
output: sprint_by_type, type 4
.1.3.6.1.4.1.1448.2.10.1.1.1.1.4.2.101.1 = STRING: "E1 loss 1
"
trace: _snmp_build(): snmp_api.c, 2879:
snmp_send: Building SNMPv2 message...
trace: _snmp_build(): snmp_api.c, 2882:
....
END OF TRACE
==========================================================
Any help, tip, advice would be encouraging...
Have a nice day,
Igor
P.S.: (System: Linux, RedHat 9.1, net-snmp 5.2.1.rc2)
Igor Grasic, Ms. D.
Development Engineer
Iskra Transmission, d. d., Ljubljana
Stegne 11, SI-1000 Ljubljana, Slovenia
phone: +386 1 5003 000
fax: +386 1 5003 500
www.iskratr.si, www.iskratr.com
........................................................
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