Re: draft-ietf-ldapext-ldap-c-api-03 & timeout

[fan jiao <fjiao@cisco.com>]

Yes I agree.

Ed Reed wrote:

> Such higher level APIs are candidates for development in the
> Directory Interoperability Forum SDK group, would you agree?
>
> Ed
>
> =================
> Ed Reed
> Reed-Matthews, Inc.
> +1 801 785 0315
> eer@oncalldba.com
>
> >>> Mark C Smith <mcs@netscape.com> 09/28/1999 09:13:09 >>>
> The timeout mechanism provided in the C API draft is very simple.  While
> I agree that more complex and full featured timeouts are desirable,
> applications are able to implement those themselves on top of the
> defined ldap_result() interface.  Therefore, I suggest we defer this
> feature for now but revive it as an API extension if there is enough
> interest.
>
> --
> Mark Smith
> iPlanet Directory Architect / Sun-Netscape Alliance
> My words are my own, not my employer's.   Got LDAP?
>
> Fan Jiao wrote:
> >
> > Mark,
> >
> > See inlines.
> >
> > Mark Wahl wrote:
> >
> > > Do you mean as part of the ldap_result() call and the synchronous Bind calls
> > > (e.g. ldap_sasl_bind_s), or as a control transmitted over protocol with the
> > > requset?
> >
> > At least the former - may be both.
> >
> > >
> > >
> > > Also, I am not familiar with the term 'exponential timeout'; could you provide
> > > an example, please?
> >
> > A simple timeout has the same timeout intervals. For example, one might have
> > Retry=3, Timeout=3. Then if client fails to connect to Directory, it will wait for
> >
> > 3 secs and try again and so forth. The drawback is that the odds for a client to
> > get
> > connected to server is not usually very good in a congested network.
> >
> > Exponential timeout uses different timeout intervals which are calculated by an
> > exponential function. One would define it using integers, Seed,
> > Limit, and Retry. For example, S=3, L=60, R=3, a client would wait for 3 secs
> > to try to connect first. If it fails, it would wait for say 12 secs, then may be
> > 56 secs.
> > One would also define the meaning of Retry = 0 - try as many time as it can as
> > long
> > as calculated interval doesn't exceed the Limit.
> >
> > By using such timeout mechanism with ldap bind/ldap result API, some higher level
> > APIs which are easy-to-use can be easily designed, for example.
> >
> > >
> > >
> > > Mark Wahl, Directory Product Architect
> > > Innosoft International, Inc.