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       ldap_result - Wait for the result of an LDAP operation


       OpenLDAP LDAP (libldap, -lldap)


       #include <ldap.h>

       int ldap_result( LDAP *ld, int msgid, int all,
            struct timeval *timeout, LDAPMessage **result );

       int ldap_msgfree( LDAPMessage *msg );

       int ldap_msgtype( LDAPMessage *msg );

       int ldap_msgid( LDAPMessage *msg );


       The  ldap_result() routine is used to wait for and return the result of
       an operation previously initiated  by  one  of  the  LDAP  asynchronous
       operation   routines   (e.g.,  ldap_search_ext(3),  ldap_modify_ext(3),
       etc.).  Those  routines  all  return  -1  in  case  of  error,  and  an
       invocation  identifier upon successful initiation of the operation. The
       invocation identifier is picked by the library and is guaranteed to  be
       unique  across  the LDAP session.  It can be used to request the result
       of a specific operation from ldap_result() through the msgid parameter.

       The ldap_result() routine will block or not, depending upon the setting
       of the timeout parameter.  If  timeout  is  not  a  NULL  pointer,   it
       specifies   a  maximum interval  to wait for the selection to complete.
       If timeout is a  NULL   pointer,  the  LDAP_OPT_TIMEOUT  value  set  by
       ldap_set_option(3)  is  used.  With  the  default  setting, the  select
       blocks  indefinitely.   To effect   a   poll,   the   timeout  argument
       should  be  a  non-NULL  pointer,  pointing  to  a  zero-valued timeval
       structure.  To obtain the behavior of the  default  setting,  bypassing
       any  value set by ldap_set_option(3), set to -1 the tv_sec field of the
       timeout parameter.  See select(2) for further details.

       If the result of a specific operation is required, msgid should be  set
       to the invocation identifier returned when the operation was initiated,
       otherwise LDAP_RES_ANY or LDAP_RES_UNSOLICITED should  be  supplied  to
       wait for any or unsolicited response.

       The  all  parameter,  if  non-zero,  causes ldap_result() to return all
       responses with msgid, otherwise only the  next  response  is  returned.
       This  is  commonly  used  to  obtain  all  the  responses  of  a search

       A search response is made up of zero or more search  entries,  zero  or
       more  search  references,  and  zero or more extended partial responses
       followed by a search result.  If all is set to 0, search  entries  will
       be  returned  one  at  a  time  as  they come in, via separate calls to
       ldap_result().  If it's set to 1, the  search  response  will  only  be
       returned  in its entirety, i.e., after all entries, all references, all
       extended partial responses, and  the  final  search  result  have  been


       Upon  success,  the  type  of  the  result received is returned and the
       result parameter will contain the result of the  operation;  otherwise,
       the result parameter is undefined.  This result should be passed to the
       LDAP  parsing  routines,   ldap_first_message(3)   and   friends,   for

       The possible result types returned are:

            LDAP_RES_BIND (0x61)
            LDAP_RES_SEARCH_ENTRY (0x64)
            LDAP_RES_SEARCH_REFERENCE (0x73)
            LDAP_RES_SEARCH_RESULT (0x65)
            LDAP_RES_MODIFY (0x67)
            LDAP_RES_ADD (0x69)
            LDAP_RES_DELETE (0x6b)
            LDAP_RES_MODDN (0x6d)
            LDAP_RES_COMPARE (0x6f)
            LDAP_RES_EXTENDED (0x78)
            LDAP_RES_INTERMEDIATE (0x79)

       The  ldap_msgfree()  routine  is  used to free the memory allocated for
       result(s) by ldap_result() or  ldap_search_ext_s(3)  and  friends.   It
       takes  a  pointer to the result or result chain to be freed and returns
       the type of the last message in the chain.  If the parameter  is  NULL,
       the function does nothing and returns zero.

       The ldap_msgtype() routine returns the type of a message.

       The ldap_msgid() routine returns the message id of a message.


       ldap_result()  returns  -1  if  something  bad happens, and zero if the
       timeout specified was exceeded.  ldap_msgtype() and ldap_msgid() return
       -1 on error.


       ldap(3), ldap_first_message(3), select(2)


       OpenLDAP  Software  is developed and maintained by The OpenLDAP Project
       <>.   OpenLDAP   Software   is   derived   from
       University of Michigan LDAP 3.3 Release.