[13898] in Athena Bugs
Re: sun4 7.7T: zctl add_un
daemon@ATHENA.MIT.EDU (Derek Atkins)
Tue Oct 3 17:51:41 1995
Date: Tue, 3 Oct 1995 17:51:34 -0400
From: Derek Atkins <warlord@MIT.EDU>
To: Chris Shabsin <shabby@MIT.EDU>
Cc: bugs@MIT.EDU
In-Reply-To: "[13895] in Athena Bugs"
zctl add_un works as it is supposed to work. THe problem is that the
current zephyr servers do not, yet, support negative subscriptions.
The plan was to encourage the server to support punting, to reduce the
overhead of messages sent to zwgc processes which would then drop them
on the floor.
However it never quite got that far.
The zephyr protocol, I believe, supports negative subscriptions, which
are denoted in your .zephyr.subs file with a leading '!'. The '-'
construct was added later for zwgc -- when zwgc starts it reads the
.zephyr.subs file and automatically punts the lists subscriptions.
I believe the plan is to move punting into the server, which would
consolidate the .zephyr.subs clutter, in a future version of zephyr.
-derek
