[NNTP] Article Numbers Becoming Invalid (RFC 3977)
mail at sabahattin-gucukoglu.com
Wed Dec 30 21:36:11 PST 2009
Is there any chance we (nntp) can have some sort of teleconference?
On 30 Dec 2009, at 13:31, Julien ÉLIE wrote:
>> Contrary to my previous messagess, GROUP doesn't set it to LWM but to the
>> lowest valid article number.
> I still do not understand.
> Section 126.96.36.199 of RFC 3977 clearly states for GROUP:
> The successful selection response will return the article numbers of
> the first and last articles in the group at the moment of selection
> (these numbers are referred to as the "reported low water mark" and
> the "reported high water mark") and an estimate of the number of
> articles in the group currently available.
> When a valid group is selected by means of this command, the
> currently selected newsgroup MUST be set to that group, and the
> current article number MUST be set to the first article in the group
> (this applies even if the group is already the currently selected
> The first article in the group is LWM.
> So in fact, you say that RFC 3977 is to be amended so that LWM is the
> lowest valid article number? But what for reinstatement?
No, I believe he simply means that LWM has no significance whatsoever other than it being LWM. It is the minimum possible article number; it need not be valid. This makes perfect sense, otherwise NEXT and LAST are basically useless.
> Otherwise, the notion of "first article" is wrong in RFC 3977 and the
> paragraph should be amended.
> I am more and more confused...
I think it could be clearer, but it's only just starting to make sense to me too. :-)
But, and I hate to be a nuisance about this, my question is still not quite answered: if I cannot manipulate the article pointer while an invalid article number is the next to be fetched, how can I really use NEXT? I have to target articles in ascending order till I find the first valid one by number, then I can use NEXT, is this not right? I don't begin at the start of the group.
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