[snmp] Context Listeners and Enterprise Beans

[Birgit Arkesteijn]

Hi,

I thought about a bit more:

Looking at AbstractSnmpContext.run(), I notice that at the end it stops 
listening on ListeningContextFace.DEFAULT_TRAP_PORT (162):

ListeningContextPool lcontext =
   new ListeningContextPool(ListeningContextFace.DEFAULT_TRAP_PORT,
	bindAddr, typeSocket);
lcontext.removeRawPduListenerFromPool(this);

The loop in run() should stop a bit after destroy() is called.

This should mean that calling destroy() on a context should be enough. 
Apparently it doesn't, what surprises me.

Cheers, Birgit


On 05/03/08 18:58, Josh Bers wrote:
> Andy,
> 
> I've run into this problem as well. If I remember right, you have to be very
> careful about removing all trap listeners from a context. The trick is to
> specify the same port number on which you originally setup the trap listener
> in the remove method. If you don't specify the port then the default method
> does not remove it from port 162...
> 
> Josh
> 
> -----Original Message-----
> From: snmp-bounces at snmp.westhawk.co.uk
> [mailto:snmp-bounces at snmp.westhawk.co.uk] On Behalf Of Andrew Chandler
> Sent: Wednesday, March 05, 2008 12:06 PM
> To: snmp at snmp.westhawk.co.uk
> Cc: Andrew Maxwell
> Subject: [snmp] Context Listeners and Enterprise Beans
> 
> Hi folks - one of our other development groups has had to create a trap
> listener which is a part of the stack I haven't really used much.    What
> they have run into is that the trap listener is in the J2EE Bean and when
> they go to redeploy the port 162 isn't being relinquished.     They do have
> code on deploy that says if the context isn't null they should call destroy
> on it but I can't remember what circumstances could cause that port to be
> locked open even temporarily - is there anything we should be watching out
> for?
>  
> 

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