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Path: utzoo!linus!husc6!rutgers!ames!amdahl!dlb!auspyr!joe
From: joe@auspyr.UUCP
Newsgroups: news.config,news.admin
Subject: News Feeds via Node Hop
Message-ID: <4948@auspyr.UUCP>
Date: Thu, 7-May-87 13:48:59 EDT
Article-I.D.: auspyr.4948
Posted: Thu May  7 13:48:59 1987
Date-Received: Fri, 8-May-87 06:46:14 EDT
Organization: Austec, Inc., San Jose, CA. USA
Lines: 100
Xref: linus news.config:152 news.admin:387


Problem:
	- Sending compressed, batched, network news via a non-news site.
	
Scenario:
	- Two Network News Sites (!newsA and !newsB) are running News2.11
	and wish to send news to each other. !newsA and !newsB aren't
	connected directly, but a common site (!inbetween) links them
	via UUCP. !inbetween does not run the network news.

Solution:
	- Create a fake entry in the /usr/lib/news/sys file for the distant
	systems. For example:

		On !newsA!/usr/lib/news/sys, add:
			newsB:to.newsB,...newsgroups...:F:

		On !newsB!/usr/lib/news/sys, add:
			newsA:to.newsA,...newsgroups...:F:

	- Add cron scripts to execution sendbatch for the fake sites, Eg:

		On !newsA!/usr/lib/crontab:
			1 * * * * /usr/lib/news/sendbatch -c newsB
		and etc...

	- Create an rnews-execution-forwarder on the non-news site. For
	example, on !inbetween create the file /usr/local/bin/rnewsfwd to read:

		uux - $1!rnews

	- Since the /usr/lib/news/sendbatch script will look for a file
	in the form of /usr/spool/batch/$remote.cmd and execute it, then
	create a script for each fake site (on the news sites) that reads:

		uux - -r -z inbetween!rnewsfwd `basename $0 .cmd`

	Or, for folks that don't like to use "ln", the file
	/usr/spool/batch/newsB.cmd would read:

		uux - -r -z inbetween!rnewsfwd newsB


Actions taken, commands executed:

	A user on !newsA posts news to to.newsB.  The article is stored in
	/usr/spool/batch/newsB.

	Cron starts up "/usr/lib/news/sendbatch -c newsB".

	/usr/lib/news/sendbatch sees that /usr/spool/batch/newsB.cmd exists
	and executes it.

	/usr/spool/batch/newsB.cmd generates the command:
		uux inbetween!rnewsfwd newsB

	After UUCICO gets done transfering files, the rnewsfwd script on
	!inbetween then generates the command:
		uux newsB!rnews

	Once again, after UUCICO, rnews on !newsB runs inews and the article
	is posted on !newsB.

	And visa-versa.

	Flow wise, that is...

	!newsA!/usr/lib/news/sendbatch
		-> !newsA!/usr/spool/batch/newsB.cmd
			-> uux inbetween!rnewsfwd newsB

	!inbetween!/usr/lib/uucp/uuxqt
		-> !inbetween!/usr/local/bin/rnewsfwd newsB
			-> uux newsB!rnews

	!newsB!/usr/bin/rnews 
		-> !newsB!inews

Problems:

	- News posted via the rnews-execution-forwarder won't reflex a true
	Path:, so news readers with mail-reply options might not like it.
	[[ This was no problem here since both sites are running smail with
	sendmail. ]] Perhaps the NEXT version of News Software might want to
	consider an rnews-execution-forwarder scheme that attaches the
	node-hoppers-names to the path lines; but if you ask me, it should be
	done with command line args and let the final poster fix the path!
	
	- A better rnews-execution forwarder need be created for multi-node
	hops.

I know the above works on 2.11 news ... should it work on 2.10? 
(Actually, on my implementation, !newsA ran 2.11 and !newsB ran 2.10 ...
worked fine).

-- 
"No matter      Joe Angelo, Sr. Sys. Engineer @ Austec, Inc., San Jose, CA.
where you go,   ARPA: aussjo!joe@lll-tis-b.arpa       PHONE: [408] 279-5533
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