RE: Multiple traps in a session

Thanks for the info.
I am using code partially taken from snmptrap.c & snmpdemoapp.c to send
traps. 
Here is the code. I have made comments "/* First trap*/" and "/* second
trap*/" at the code where send 2 traps. Please let me know if there is
anything wrong.

Thanks,
Edison

  putenv (strdup ("POSIXLY_CORRECT=1"));

  snmp_enable_stderrlog ();

  snmp_sess_init (&session);	/* set up defaults */
  session.peername = (char *) malloc (25);
  memset (session.peername, 0, 25);

  strcpy (session.peername, (const char *) TrapServer);

  session.version = SNMP_VERSION_1;


  session.community = (u_char *) malloc (25);
  memset (session.community, 0, 25);

  strcpy ((char *) session.community, (const char *) CommunityString);

  session.community_len = strlen ((const char *) session.community);

  session.callback = snmp_input;
  session.callback_magic = NULL;

  netsnmp_ds_set_int (NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DEFAULT_PORT,
		      SNMP_TRAP_PORT);

  ss = snmp_open (&session);

  if (ss == NULL)
    {
      /*
       * diagnose snmp_open errors with the input netsnmp_session
pointer 
       */
      snmp_sess_perror ("snmpapp", &session);
      snmp_shutdown ("snmpapp ");
      return 0;
    }

  pdu = snmp_pdu_create (SNMP_MSG_TRAP);
  pdu_in_addr_t = (in_addr_t *) pdu->agent_addr;

  pdu->enterprise = (oid *) malloc (sizeof (objid_enterprise));
  memcpy (pdu->enterprise, objid_enterprise, sizeof (objid_enterprise));
  pdu->enterprise_length = sizeof (objid_enterprise) / sizeof (oid);
  *pdu_in_addr_t = get_myaddr ();

  pdu->trap_type = 6;

  pdu->specific_type = 1;

  pdu->time = get_uptime ();
/* add some variables here to the pdu */

/* First trap*/
  status = snmp_send (ss, pdu) == 0;
  if (status)
    {
	  snmp_sess_perror ("snmpapp ", &session);
      printf ("1\n");
      snmp_free_pdu (pdu);
      exitval = 1;
    }

/* Second trap*/
  status = snmp_send (ss, pdu) == 0;
  if (status)
    {
	  snmp_sess_perror ("snmpapp ", &session);
      printf ("1\n");
      snmp_free_pdu (pdu);
      exitval = 1;
    }

  snmp_close (ss);

  snmp_shutdown ("snmpapp ");

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Dave Shield
Sent: Thursday, September 06, 2007 2:34 PM
To: Edison C.
Cc: [email protected]
Subject: Re: Multiple traps in a session

On 05/09/07, Edison C. <[email protected]> wrote:
> Is there a way to send multiple traps in a session?
> Can some one give some pointers?

It's certainly possible - that's exactly what the current
agent trap sessions do.


> If I opened a session & tried sending multiple traps I get a " ***
glibc
> detected *** double free or corruption" error when attempting to send
> the second trap

What is your code for sending these traps?
In particular, what is the code for creating the two trap PDUs?

Dave

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