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From Alex Karasulu <>
Subject Re: Client API : unsolicited notification support
Date Tue, 09 Feb 2010 14:33:15 GMT
On Tue, Feb 9, 2010 at 6:29 AM, Emmanuel Lecharny <>wrote:

> Hi,
> we haven't add support for the Unsolicited Notification, as specified in
> RFC 4511, chap. 4.4 :
We had it with the old RFC AFAIK. But are you suggesting this new revision
has some aspects we have not implemented and therefore need to re-implement
this protocol feature?

4.4.  Unsolicited Notification
>   An unsolicited notification is an LDAPMessage sent from the server to
>   the client that is not in response to any LDAPMessage received by the
>   server.  It is used to signal an extraordinary condition in the
>   server or in the LDAP session between the client and the server.  The
>   notification is of an advisory nature, and the server will not expect
>   any response to be returned from the client.
>   The unsolicited notification is structured as an LDAPMessage in which
>   the messageID is zero and protocolOp is set to the extendedResp
>   choice using the ExtendedResponse type (See Section 4.12).  The
>   responseName field of the ExtendedResponse always contains an LDAPOID
>   that is unique for this notification.
>   One unsolicited notification (Notice of Disconnection) is defined in
>   this document.  The specification of an unsolicited notification
>   consists of:
>   - the OBJECT IDENTIFIER assigned to the notification (to be specified
>     in the responseName,
>   - the format of the contents of the responseValue (if any),
>   - the circumstances which will cause the notification to be sent, and
>   - the semantics of the message.
> 4.4.1.  Notice of Disconnection
>   This notification may be used by the server to advise the client that
>   the server is about to terminate the LDAP session on its own
>   initiative.  This notification is intended to assist clients in
>   distinguishing between an exceptional server condition and a
>   transient network failure.  Note that this notification is not a
>   response to an Unbind requested by the client.  Uncompleted
>   operations are handled as specified in Section 3.1.
>   The responseName is, the responseValue field
>   is absent, and the resultCode is used to indicate the reason for the
>   disconnection.  When the strongerAuthRequired resultCode is returned
>   with this message, it indicates that the server has detected that an
>   established security association between the client and server has
>   unexpectedly failed or been compromised.
>   Upon transmission of the Notice of Disconnection, the server
>   gracefully terminates the LDAP session as described in Section 5.3.
> --
> Regards,
> Cordialement,
> Emmanuel L├ęcharny

Alex Karasulu
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