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To: Terry Lambert <tlambert@primenet.com>
cc: grog@lemis.com (Greg Lehey), doconnor@Ist.flinders.edu.au,
        freebsd-hackers@FreeBSD.ORG
Subject: Re: Divert sockets.. 
In-reply-to: Your message of "Sun, 07 Sep 1997 14:15:31 -0000."
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Date: Sun, 07 Sep 1997 16:00:04 +0100
From: Brian Somers <brian@awfulhak.org>
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[.....]
> Or maybe he's like me, and he can't get the thing to idle disconnect
> because of the !@#$! keep-alives that are near-impossible to turn
> off if you have a local net as well.

Hmm.  I have a local net of 8 machines, and I don't have any such 
problems.  Of course you know about "set afilter".

The thing I don't understand is how re-writing anything is going to 
solve a problem where people want the link to shutdown subliminally :-)

> There are a lot of general uses, besides PPP, for interface event
> notification.  PPP just uses one of them.

Agreed.

> In answer to te original question, yes, it's possible, if you are the
> packet transporter and use the tunnel devices, just like iijppp, to
> let you sleep waiting for a packet "event".  But there is no general
> event interface, even though it's becoming more and more of a kludge
> to not have one (e.g.: say I want to register for a directory change
> event because I'm a file browser, and I want to see files show up
> immediately, not after 10's of seconds when my poll-the-directory
> timer fires off).

You've been working w/ Windoze too long !!!  You're becoming a 
heretic !

Perhaps that idea warrants some sort of ability to do a select() on a 
seekable file.  If you've got the O_APPEND flag, select will return 
when there's more data at the end (tail(1) would be almost perfect). 
When you haven't got O_APPEND, maybe a file update would wake up the 
select().

Of course the implementation is trivial ;-I (not)

> 					Terry Lambert
> 					terry@lambert.org
> ---
> Any opinions in this posting are my own and not those of my present
> or previous employers.

-- 
Brian <brian@awfulhak.org>, <brian@freebsd.org>
      <http://www.awfulhak.org>
Don't _EVER_ lose your sense of humour....