[AGENT++] problem with notify_register() and response through callback function

[Jochen Katz]

Hi Martijn,

> I am trying to receive traps from a printer device, but something goes 
> wrong. I use notify_register() to register the traps I want to subscribe 
> to. I also see (with a sniffer) that the traps are received by my 
> computer successfully but they are not redirected to my callback 
> function I have specified when calling notify_register().

did you try with empty Oid-/Targetcollections?

> When debugging I see that in the receive_snmp_response(), GetEntry() is 
> called with a specified notify_id. This id contains 0 and the GetEntry() 
> returns NULL because absolutely no entries are registered.

receive_snmp_response() should not be invloved for trap receiption. 
Instead receive_snmp_notification() should be called from 
CNotifyEventQueue::HandleEvents().

> What goes wrong, and what can I do about it. If you need more 
> information I will gladly provide it.

You can compile snmp++ with _DEBUG defined and try to receive the trap 
with the receive_trap example.

Regards,
   Jochen