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           The  retcode  overlay  to  slapd(8)  is  useful to test the behavior of
           clients when server-generated erroneous and/or unusual responses occur,
           e.g. error codes, referrals, excessive response times and so on.
           The error responses are generated according to different strategies.
           In  the  first case, all operations targeted at a specific configurable
           subtree cause the object related to the request DN to be looked up  and
           checked for return code data: a response code, plus an optional textual
           message, an optional configurable delay, an optional matched DN  field,
           and, when the response code is "referral", a (list of) referral(s).
           Well-known response codes from standard track documents are provided in
           retcode.conf, which can be included after instantiating the overlay.
           In the second case, objects of classes inherited from the errAbsObject,
           like errObject or errAuxObject, when returned as intermediate responses
           of a search request, are changed into the response  dictated  by  their
           A  third  mode  causes  objects  to  be  looked  up from the underlying
           database to discover if their class inherits from errABsObject; in that
           case, their content is used to compute the corresponding response.
           The  behavior  is disabled by using the manageDSAit control (RFC 3296);
           in that case, the resulting object, either present in the directory  or
           dynamically  generated  by the overlay, or contained in the request, is
           handled as usual.
           The config directives that are specific to the retcode overlay must  be
           prefixed  by  retcode-,  to avoid conflicts with directives specific to
           the underlying database or to other stacked  overlays.   The  following
           specific directives can be used to configure the retcode overlay:
           retcode-parent <DN>
                  This directive defines the parent DN where dynamically generated
                  entries reside.  If not defined, the suffix of the  database  is
           retcode-item    <RDN>    <errCode>    [op=<oplist>]    [text=<message>]
                  [ref=<referral>]        [sleeptime=<sec>]         [matched=<DN>]
                  A dynamically generated  entry,  located  below  retcode-parent.
                  The errCode is the number of the response code; it can be in any
                  format supported by strtol(3).  The optional oplist is a list of
                  operations  that  cause response code generation; if absent, all
                  operations are affected.  The matched field is  the  matched  DN
                  result in a lot of unnecessary overhead.
           retcode-sleep [-]<n>
                  Defines a sleep time in seconds that is  spent  before  actually
                  handling  any  operation.   If negative, a random time between 0
                  and the absolute value of the argument is used.


           The retcode overlay utilizes the "return code" schema described herein.
           This  schema  is specifically designed for use with this overlay and is
           not intended to be used otherwise.  It is also noted  that  the  schema
           described  here  is  a  work  in  progress, and hence subject to change
           without notice.  The schema is loaded automatically by the overlay.
           The schema includes a number of object classes and associated attribute
           types as described below.
           The error code:
                   NAME ( 'errCode' )
                   DESC 'LDAP error code'
                   EQUALITY integerMatch
                   ORDERING integerOrderingMatch
                   SINGLE-VALUE )
           The operations that trigger the response code:
                   NAME ( 'errOp' )
                   DESC 'Operations the errObject applies to'
                   EQUALITY caseIgnoreMatch
                   SUBSTR caseIgnoreSubstringsMatch
                   SYNTAX )
           The text message:
                   NAME ( 'errText' )
                   DESC 'LDAP error textual description'
                   EQUALITY caseIgnoreMatch
                   SUBSTR caseIgnoreSubstringsMatch
                   SINGLE-VALUE )
           The sleep time before the response is actually returned to the client:
                   NAME ( 'errSleepTime' )
                   DESC 'Time to wait before returning the error'
                   EQUALITY integerMatch
                   SINGLE-VALUE )
                   EQUALITY objectIdentifierMatch
                   SINGLE-VALUE )
           The octet string to be returned as extended response data in  RFC  4511
           unsolicited response:
                   NAME ( 'errUnsolicitedData' )
                   DESC 'Data to be returned within unsolicited response'
                   SINGLE-VALUE )
           If  TRUE,  slapd(8)  disconnects  abruptly without notice; if FALSE, it
           disconnects after sending response as appropriate:
                   NAME ( 'errDisconnect' )
                   DESC 'Disconnect without notice'
                   SINGLE-VALUE )
           The abstract class that triggers the overlay:
                   NAME ( 'errAbsObject' )
                   SUP top ABSTRACT
                   MUST ( errCode )
                   MAY ( cn $ description $ errOp $ errText $ errSleepTime
                       $ errMatchedDN ) )
           The standalone structural objectclass for specifically created data:
                   NAME ( 'errObject' )
                   SUP errAbsObject STRUCTURAL )
           The auxiliary objectclass to alter the behavior of existing objects:
                   NAME ( 'errAuxObject' )
                   SUP errAbsObject AUXILIARY )


                  overlay         retcode
                  retcode-parent  "ou=RetCodes,dc=example,dc=com"
                  # retcode.conf is found in tests/data/ of the source tree
                  include         ./retcode.conf
                  # Wait 10 seconds, then return success (0x00)
                  retcode-item    "cn=Success after 10 seconds" 0x00 sleeptime=10
                  # Wait 10 seconds, then return timelimitExceeded (0x03)
                  retcode-item    "cn=Timelimit after 10 seconds" 0x03 sleeptime=10

    OpenLDAP 2.4.40 2014/09/20 SLAPO-RETCODE(5)


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