Path: utzoo!utstat!news-server.csri.toronto.edu!math.lsa.umich.edu!zaphod.mps.ohio-state.edu!samsung!cs.utexas.edu!uunet!cos!hqda-ai!media!unixbox!rmf
From: rmf@media.medianette (Roger Fujii)
Newsgroups: news.software.b
Subject: C News Ihave/Sendme
Message-ID: <1990Aug14.051835.209@media.medianette>
Date: 14 Aug 90 05:18:35 GMT
Organization: media
Lines: 27

After sending some time digging through the Cnews source code, it seems to
me that the Ihave-Sendme implementation is 'less than optimal'.  Unless
I am missing something, it seems that Cnews generates a 'sendme' AS
SOON AS it processes the ihaves.  This destroys any advantage of delaying
the sendbatches of Host.sendme to 'disfavor' a slow ihave site (My
situation is several incoming ihave/sendme sites, some TB+s, and some
2400s - we would like to favor the TB sites).

Anyway, I rigged up a set of changes to (hopefully) fix this.  Here is
what I did:
	1) I produced a program that will re-check article ids to see
	   if it has arrived.  This is to check to see if the article
	   has come in after receiving the ihave, but before I gen
	   the sendme.
	2) Changed batchsm to call this program instead of cat.
	3) Fixed spacefor to accept "ihave" & "sendme" flags to
	   calculate saner numbers.
	4) Changed batchsplit to check for ihave/sendme messages
	   and calculate saner sizes
	5) Changed sendbatches to pass the ihave/sendme flag to
	   the modified spacefor.

This seems to work, but I have this nasty feeling that this is too simple
and I am missing something.  Any comments?
-- 
Roger Fujii - Media Cybernetics		Phone: (301)495-3305
Internet: rmf%media@uunet.uu.net 	UUCP: {uunet,hqda-ai}!media!rmf