# perldoc > Net::LDAP::Extension::Cancel

## NAME
    [Net::LDAP::Extension::Cancel](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP%3A%3AExtension%3A%3ACancel/markdown) - LDAP Cancel Operation

## SYNOPSIS
     use [Net::LDAP](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP/markdown);
     use [Net::LDAP::Constant](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP%3A%3AConstant/markdown) qw(LDAP_SUCCESS LDAP_CANCELED)
     use [Net::LDAP::Extension::Cancel](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP%3A%3AExtension%3A%3ACancel/markdown);

     $ldap = [Net::LDAP](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP/markdown)->new( 'ldap.mydomain.eg' );

     $ldap->bind('cn=Joe User,cn=People,dc=example,dc=com',
                 password => 'secret');

     $search = $ldap->search(
                            base     => 'c=US',
                            filter   => '(&(sn=Barr) (o=Texas Instruments))',
                            callback => \&process_entry, # Call this sub for each entry
                          );

     $mesg = $ldap->cancel($search);

     die "error :", $mesg->code(), ": ", $mesg->error()
       if ($mesg->code() != LDAP_CANCELED && mesg->code() != LDAP_SUCCESS);

## DESCRIPTION
    "[Net::LDAP::Extension::Cancel](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP%3A%3AExtension%3A%3ACancel/markdown)" implements the "Cancel" extended LDAPv3 operation as described in
    RFC 3909.

    The "Cancel" extended operation is very similar to the "Abandon" standard operation, and has the
    same call signature. Unlike the "Abandon" operation, it has a response which provides an
    indication of its outcome.

    It implements no object by itself but extends the [Net::LDAP](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP/markdown) object by another method:

## METHODS
    cancel ( OPERATION, OPTIONS )
        Cancel an outstanding operation. "OPERATION" may be a number or an object which is a
        sub-class of [Net::LDAP::Message](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP%3A%3AMessage/markdown), returned from a previous method call.

        OPTIONS is a list of key/value pairs. The following keys are recognized:

        control => CONTROL
        control => [ CONTROL, .. ]
            Control(s) to be passed to the operation.

## SEE ALSO
    [Net::LDAP](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP/markdown), [Net::LDAP::Extension](https://www.chedong.com/phpMan.php/perldoc/Net%3A%3ALDAP%3A%3AExtension/markdown)

## AUTHOR
    Peter Marschall <<peter@adpm.de>>.

    Please report any bugs, or post any suggestions, to the perl-ldap mailing list
    <<perl-ldap@perl.org>>

## COPYRIGHT
    Copyright (c) 2011 Peter Marschall. All rights reserved. This program is free software; you can
    redistribute it and/or modify it under the same terms as Perl itself.