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Re: When are Message Headers retreived??

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On 6/05/2026 6:52 am, Ralph Fox wrote:
> On Tue, 5 May 2026 20:42:11 +1000, Daniel70 wrote:
> 
>> In eternal-september.support, there is a discussion going on about when
>> Message Filters are applied to a message/newsgroup. The thread is ...
>>
>> Maximum number of crossposts allowed on eternal-september?
>>
>> I've altered that Subject: to ....
>>
>> OT: When is the Message Body retreived from the Server?? was Re: Maximum
>> number of crossposts allowed on eternal-september?
>>
>> Yesterday (4th May), Mickey posted (in part) ....
>>
>> Quote
>> Since the Newsgroups header typically is not included in the xover,
>> isn't this an expensive filter that doesn't work until you retrieve
>> the body?
>> End Quote
>>
>> to which I replied ...
>>
>> Quote
>> Sorry. WHAT?? I could be wrong but ....Isn't the Header AND the Body of
>> a message retrieved from the Server in the one go .... rather that the
>> above seeming to suggesting the Header is retrieved and THEN the Body is
>> (maybe) retrieved??
>> End Quote
>>
>> So, when I click on a Newsgroup in the Server Pane of SM's Mail and
>> Newsgroups screen and the various Threads are listed in the Threads pane
>> (i.e. one thread I see listed here is 'How can I move the "open new tab"
>> Button?' posted by Hank back on the 19/04/2026'), but, without clicking
>> on that line in the Threads pane, have I actually downloaded anything of
>> the message header so that a filter can be applied to any lines in the
>> Header information of a particular message??
> 
> You have downloaded only a SUBSET [^1] of the header fields, for all
> messages in the threads pane.
> 
>> Or is the Message Header information (and the Message content) ONLY
>> retreived from the News Server (E-S in my particular case) when I select
>> a particular Message in the Threads pane??
> 
> The header fields which are NOT in the subset (and the message content)
> are only retrieved when you select a message (or if you have selected
> the group for offline use, when you 'Download Now').
> 
> 
> You can enable NNTP logging in SeaMonkey and check the log for yourself
> to see what it is doing.  That way you won't have to trust people on
> Usenet.
> <https://kb.mozillazine.org/Session_logging_for_mail/news>
> <https://wiki.mozilla.org/MailNews:Logging>
> 
> 
> The NNTP log will you this:
> 
> When you enter a group with (say) 100 new posts, SeaMonkey will use
> a single XOVER command to download a subset [^1] of header fields
> for all 100 posts in one go.
> 
> To download the message content will take 100 separate goes, with a
> separate ARTICLE command for each post.
> 
> 
> ____
> FOOTNOTE
> 
> [^1]  Which header fields are in this subset, is defined in the NNTP
>        specifications here:
> 
>        RFC2980 section 2.8
>        <https://datatracker.ietf.org/doc/html/rfc2980#section-2.8>
> 
>        RFC3977 section 8.3.2
>        <https://datatracker.ietf.org/doc/html/rfc3977#section-8.3.2>
> 
> 
> 
Sorry, Ralph, I had a quick look at both those articles and they seem to 
go over my head!

The way I was think of it was that the news server would have a file 
containing the message numbers and the Subject: of the message .... No!! 
The more I think about MY system the more complex I would have to make it!!

Disregard!!
-- 
Daniel70

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Thread

When are Message Headers retreived?? Daniel70 <daniel47@nomail.afraid.org> - 2026-05-05 20:42 +1000
  Re: When are Message Headers retreived?? Ralph Fox <-rf-nz-@-.invalid> - 2026-05-06 08:52 +1200
    Re: When are Message Headers retreived?? Daniel70 <daniel47@nomail.afraid.org> - 2026-05-06 20:15 +1000
      Re: When are Message Headers retreived?? Ralph Fox <-rf-nz-@-.invalid> - 2026-05-07 17:17 +1200
        Re: When are Message Headers retreived?? Daniel70 <daniel47@nomail.afraid.org> - 2026-05-07 20:49 +1000

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