Using Unix socket domain for SNMP client (snmpget)

Hey,
 
I'd like to perform an SNMP get query to the localhost master agent
(onthe same machine),
and do it over the unix socket domain.
 
I'm using this scheme:
    snmp_sess_init(&session);
    ss = snmp_open(&session); 
    pdu = snmp_pdu_create(SNMP_MSG_GET);
    snmp_synch_response(ss, pdu, &response);
 
I guess I should specify, somewhere in the session structure, which
socket to use.
1) Where?
 
2) Shouldn't the master agent be configured for a specified socket? how?
 
thanks,
Erez.