if ( (ld = ldap_init("192.xxx.xxx.xxx",389 ))== NULL )
if ( ldap_simple_bind_s( ld,"CN=nina
wang,CN=Users,DC=ldap,DC=qtier,DC=com","0000" ) != LDAP_SUCCESS )
ldap_perror( ld, "ldap_simple_bind_s" );
insert "ldap_unbind( ld );" here. Does that fix the problem?
That's how to free the LDAP* structure.
In LDAP, "unbind" is the "disconnect" command, it's not the
opposite of "bind". The misleading name came about because
originally one had to bind after connect.
ldap_msgfree( res );
res == NULL here in this particular code, so you can drop
this and the declaration of 'res'.
/* close and free connection resources */
ldap_unbind( ld );