how to use snmp_async_send?

[Vladimir Akkerman]

I write multithread program, how should I use snmp_async_send? Here is code of every thread. Session is created and destroyed every time thread is running.

struct snmp_session session; //separated in every thread
struct snmp_session *sess_handle;
struct snmp_pdu *pdu;
struct snmp_pdu *response;

oid id_oid[MAX_OID_LEN];
oid serial_oid[MAX_OID_LEN];

size_t id_len = MAX_OID_LEN;
size_t serial_len = MAX_OID_LEN;

struct variable_list *vars;

int status;


snmp_sess_init(&session);
session.peername=this->ip;
session.version=SNMP_VERSION_1;
session.community="public";

session.community_len=strlen(session.community);
sess_handle=snmp_open(&session);

pdu=snmp_pdu_create(SNMP_MSG_GET);

read_objid(oid1, id_oid, &id_len);
snmp_add_null_var(pdu, id_oid, id_len);
read_objid(oid2, id_oid, &id_len);
snmp_add_null_var(pdu, id_oid, id_len);

/* next code gives an error Segmentatio Fault, cause snmp_sync_response should not be used in multithreading code. Help me with snmp_async_send
*/
status=snmp_synch_response(sess_handle, pdu, &response);