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 Administrative / General / 49
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Subject: 
Re: Trouble seeing new articles with Free Agent
Newsgroups: 
lugnet.admin.general
Date: 
Tue, 29 Sep 1998 19:40:50 GMT
Viewed: 
510 times
  
sarah@eskimo.com (Perhaps a Princess....) writes:

On Mon, 28 Sep 1998 01:39:56 GMT, lehman@javanet.com (Todd Lehman)
wrote:

Ever seen Agent or Free Agent fail to recognize the existence of newly
posted article on a server?

All 4 of the articles I posted to lugnet.general today were ignored by Free
Agent until I unsubscribed the group and re-added it.  Netscape news can
see them just fine.  And they show up just fine interactively with "telnet
lugnet.com 119".  The server software hasn't changed recently and appears
to be working 100% correctly.  Bug in Free Agent or something I'm missing?

Interesting. When you reset the groups, Todd, I had this exact same
problem with Agent. I wondered why I was not getting any mail in
announce or lugnet.general :) THen I did a manual Get All Messages and
downloaded 7 in announce and 39+ in lugnet.general. ANd it is
downloading new fine now.

I fixed the problem -- and I think it affected everyone, not just Free
Agent -- I introduced a stoopit bugaboo when I diddled with the cancel mods
last week.  Here's a repost of the article I posted 2 days ago right before
the groups were wiped:

--Todd


___________________________________________________________________________
Xref: lugnet.com lugnet.general:292
Newsgroups: lugnet.general
Path: lugnet.com!lugnet
From: lehman@javanet.com (Todd Lehman)
Subject: Re: Trouble seeing new articles with Free Agent
X-Newsreader: Forte Free Agent 1.11/32.235
Organization: Fibblesnork Software
Message-ID: <360f36c6.55437893@lugnet.com>
References: <360ee87d.35393825@lugnet.com>
X-Nntp-Posting-Host: bos-us435.javanet.com
Date: Mon, 28 Sep 1998 07:19:22 GMT
Lines: 49

lehman@javanet.com (Todd Lehman) writes:


Mike/Sarah/anyone --

Ever seen Agent or Free Agent fail to recognize the existence of newly
posted article on a server?

All 4 of the articles I posted to lugnet.general today were ignored by Free
Agent until I unsubscribed the group and re-added it.  Netscape news can
see them just fine.  And they show up just fine interactively with "telnet
lugnet.com 119".  The server software hasn't changed recently and appears
to be working 100% correctly.  Bug in Free Agent or something I'm missing?

--Todd


Shame on me -- it was my fault.  I didn't understand (and may still not)
all the subtleties of the code change I made 2-3 days ago when I made the
cancelling rename article files instead of actually deleting them.

Turns out CNews's implementation GROUP command in NNTP scans the directory
(for a newsgroup) on the fly counting articles.  A snippet of relevant code
from scandir.c:

   while ((dirent = readdir(dirp)) != NULL) {
      artnum = atoi(dirent->d_name);
         if (artnum == 0 || artnum < low_msg || artnum > high_msg)
            continue;

So the cancelled files like

   260!

were matching in this section of code as regular articles, since atoi()
returns an integer up to a non-digit character.  Derrr.  And this was
throwing off the counts when the GROUP command said how many articles
existed.

So.  Names like

   _260

do not confuse the code above.  God forbid if they confuse some other
obscure little chunk of code!  I never would have guessed it was scanning
the directory on-the-fly.  But then again it'll be cached in memory and
still quite fast under Unix.

--Todd



Message has 1 Reply:
  Re: Trouble seeing new articles with Free Agent
 
(...) But I was not having the same problems when you were having it. Rather, I had the problem only in the groups which 1) were wiped, but stuck around 2) I had old messages still sitting in inside of Agent. (because of information I needed to (...) (26 years ago, 29-Sep-98, to lugnet.admin.general)

Message is in Reply To:
  Re: Trouble seeing new articles with Free Agent
 
(...) Interesting. When you reset the groups, Todd, I had this exact same problem with Agent. I wondered why I was not getting any mail in announce or lugnet.general :) THen I did a manual Get All Messages and downloaded 7 in announce and 39+ in (...) (26 years ago, 29-Sep-98, to lugnet.admin.general)

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