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LDAP_RESULT(3)                                                  LDAP_RESULT(3)

       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  rou-
       tines 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, point-
       ing 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 operation.

       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 received.

       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 interpretation.

       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_msg-
       type() 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.

OpenLDAP 2.4.40                   2014/09/20                    LDAP_RESULT(3)