On 10/12/2007, Giuseppe Modugno <[EMAIL PROTECTED]> wrote:
> I'm reading watcher code and I found the following:
> whandler = netsnmp_get_watcher_handler();
> netsnmp_inject_handler(reginfo, whandler);
> return netsnmp_register_scalar(reginfo);
> The injected handler is whandler or the handler in the reginfo struct
> ('netsnmp_mib_handler *handler' field)?
The newly-created handler 'whandler' is inserting into the existing
handler chain 'reginfo->handler'
> So, what is the purpose of reginfo->handler if it isn't used?
When a request is received, the agent detects the 'reginfo'
structure that is relevant for that OID, and invokes the list
of handler routines (reginfo->handler). These will each
apply certain specific processing, and then pass the request
on to the next handler in the list - finally ending up at the
handler specific for that particular MIB.
Dave
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