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Re: supportedControl and recognized controls



Does anybody has a suggestion or opinion with regards to this issue (see below)? If the posting of such things on LDAPEXT is inappropriate, please excuse me. Is there a more appropriate discussion list for this?

Thanks,
Mircea.

MIRCEA PANA wrote:

In RFC2251, section "4.1.12 Controls", last paragraph specifies:
"Servers list the controls which they recognize in the supportedControl
attribute in the root DSE"

How should this be interpreted?
Option 1: "Servers SHOULD list all the controls which they recognize in
the supportedControl attribute in the root DSE"
Option 2: "Servers MAY list (some of the) controls which they recognize
in the supportedControl attribute in the root DSE".

The same question goes for RFC2252, section "5.2.4 supportedControl"
which specifies: "The values of this attribute are the OBJECT
IDENTIFIERs identifying controls which the server supports. If the
server does not support any controls, this attribute will be absent."
Should this read: "... identifying all the controls which the server
supports."
or should it read: "... identifying (some of the) controls which the
server supports."

Or put it this way:
How should a client deal with extensions?
Option A: The client should search the root DSE to find out if a
specific control is supported. If not in the "supportedControl" list of
OID.s, then the client should not attempt to use the control.
Option B: The client should ignore the root DSE's "supportedControl"
list of OID.s and attempt to use the control any way. The server should
then perform according to the specifications of RFC2251, section 4.1.12.

Any thoughts or suggestions?
Thanks,
Mircea.

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