On Wed, 2005-11-09 at 15:27 -0500, Haizhu Liu wrote:
> I see on the other thread:
>
> "Note that it's this 'snmp_sess_transport' API works with
> the opaque (session_list) pointer - *NOT* the "netsnmp_session"
> pointer returned by 'snmp_open()'.
>
> So you probably want something like:
>
> netsnmp_session *sess = snmp_open(...);
> netsnmp_transport *t = snmp_sess_transport(
> snmp_sess_pointer( sess ));
> int sock = t->socket;
> "
>
> the code as above is really using snmp_open() instead of snmp_sess_open(),
But note what parameter is passed to 'snmp_sess_transport'.
This doesn't take 'sess' directly - it uses the result of
the "snmp_sess_pointer(sess)" call. That routine turns a
(traditional) netsnmp_session structure into the corresponding
(opaque) SSI pointer.
Maybe if the code above was expanded a bit, it might help:
netsnmp_session *sess = snmp_open( .... );
void *s2 = snmp_sess_pointer( sess );
netsnmp_transport *t = snmp_sess_transport( s2 );
is basically equivalent to:
void *s2 = snmp_sess_open( .... );
netsnmp_transport *t = snmp_sess_transport( s2 );
Any clearer?
Dave
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