Re: Pass the port number to an extension command in snmpd.conf

On 14 January 2011 14:56, Wes Hardaker <[email protected]> wrote:
>
> VC> pass_persist .1.3.6.1.4.1.1206 /usr/bin/custom_app 5200
>
> VC> What I want to do is pass the port number that the request came in on to
> VC> custom_app as a parameter, instead of "5200" above.
>
> Unfortunately, you can't do that.  In fact, the transport system is
> designed *not* to pass that type of information all over the place.

There's also another (fundamental) problem with this idea.
The point of "pass_persist"  (as opposed to "pass") is that the
program is invoked *once*, triggered by the first request for this subtree.
It then keeps running, in order to respond to subsequent requests
without needing to be re-run.

So if the first request came in on 5201, then the app would be invoked
as   "custom_app 5201".
   If another request then came in on 5202,  this would be processed
by the same running app - so the arguments would still be the same.

Dave

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