LDAP_CONTROL_ENTRYCHANGE examples against eDirectory

[Don Miller]

I am able to do a persistent search against the server but I cannot figure out how to 
use/extract population of the ENTRYCHANGE control.  I was wondering if anyone had any 
complete examples about how to start the search properly to return the ENTRYCHANGE 
control and how to use it.  I am setting the returnECs but it doesn't appear to be 
returning anything.

Here is the jist of my current persistent search.

my $asn = Convert::ASN1->new;
$asn->prepare(<<EOASN);
  PersistentSearch ::= SEQUENCE {
    changeTypes INTEGER,
    changesOnly BOOLEAN,
    returnECs BOOLEAN
  }
EOASN

my $params = $asn->encode(
  changeTypes => 15, 
  changesOnly => 1, 
  returnECs => 1
);

my $persistctl = Net::LDAP::Control->new(
  critical => true,
  type => LDAP_CONTROL_PERSISTENTSEARCH,
  value => $params
);

my $result = $ldap->search(
  base => '',
  filter => '(objectclass=person)',
  attrs => [ 'cn' ],
  control => [ $persistctl ],
  callback => \&check_home
);

if ($result->code) {
  my $error = $result->code;
  my $errstr = $result->error;
  print "Error: $error ($errstr)\n";
}

sub check_home {
  my $message = shift;
  my $entry = shift;
  print $entry->dn,"\n";
}

$result->pop_entry;


Thanks!