chain overlay and chaining

[Pierangelo Masarati <ando@sys-net.it>]

The chain overlay still needs some cleanup; I erroneously made it chase 
__all__ referrals, if more than one is provided, while it should simply 
try until one can be chased.  I have a patch that fixes this.  Moreover, 
when chasing referrals within other oprations, only the first referral 
was tried.  I've modified the overlay to try all until one succeeds, and 
modified test032 accordingly.

Finally, after having a look at <draft-sermersheim-ldap-chaining-02>, I 
note that the current implementation of the chain overlay corresponds to 
having both a resolveBehavior and a continuationBehavior of 
chainingPreferred, so it could be interesting to implement the chaining 
control to allow the other combinations.  Unfortunately the draft has 
expired without being resubmitted 
<http://www.ietf.org/internet-drafts/draft-sermersheim-ldap-chaining-03.txt>.

Comments?

p.



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