perl-ldap-dev

Re: how to handle connection to server if server runs away?

[Kurt D. Z. <Ku...@Op...>]

At 12:20 PM 7/27/00 +0100, Chris Ridd wrote:
>Jonathan Leto <jon...@le...> wrote:
>>If I had problem with timeouts, you would just have to come up with a
>>heuristic of checking if the server is alive ( I dont' think anything
>>like $ldap->ping exists, THAT would be cool ) and then do a check at the
>>beginning of every function.

I suggest you attempt an anonymous bind.  This should always return
a result (possibly indicating an error).  If you want to force an
error, select version MAXINT.


>The best (ie cheapest in terms of protocol) way to do that in LDAPv3 would be to read a specific attribute (eg supportedLDAPVersions) from the root DSE, and throw away the results.

Or ask for attribute "1.1"... (you'll have less to throw away).

>I can't think of a simple and portable way to do this in LDAPv2.

Anonymous bind.  In fact, I suggest as a cheap general solution
for all versions of LDAP.  Anonymous binds are generally quite
cheap... in fact may be even cheaper than accessing the LDAPv3
root DSE (depending on implementation).

Kurt

Re: how to handle connection to server if server runs away?

[Graham B. <gb...@po...>]

On Thu, Jul 27, 2000 at 08:03:42AM -0700, Kurt D. Zeilenga wrote:
> At 12:20 PM 7/27/00 +0100, Chris Ridd wrote:
> >Jonathan Leto <jon...@le...> wrote:
> >>If I had problem with timeouts, you would just have to come up with a
> >>heuristic of checking if the server is alive ( I dont' think anything
> >>like $ldap->ping exists, THAT would be cool ) and then do a check at the
> >>beginning of every function.
> 
> I suggest you attempt an anonymous bind.  This should always return
> a result (possibly indicating an error).  If you want to force an
> error, select version MAXINT.

Would that not be a problem if you are already bound as a user ?

Graham.