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000193_news@watsun.cc.columbia.edu _Mon Feb 8 16:23:19 1999.msg
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From: "Michel" <mjka@globalxs.nl>
Subject: Re: Transparent printing
Date: Mon, 8 Feb 1999 22:03:59 +0100
Organization: MultiAccess
Message-ID: <918507836.289598@samba.news.big-orange.net>
To: kermit.misc@mailrelay2.cc.columbia.edu
After reading this article i have the following question":
With Kermit95 and tcp/ip direct ethernet connection, users
shutting down the pc accidently, will never connect again to their previous
telnet session.
As you say in your atricle, there is some kind of utility to pick "old"
telnet sessions, something like
nvt (novell virtual terminal session) or something like that.
Thnx
Michel Krabshuis
MCP
Email: mjka@globalxs.nl
Scott Nelson heeft geschreven in bericht ...
>I developed a utility similar to FSF's screen program so that our K95
>users connecting over the internet can re-connect to their "session" if
>they get bumped off (phone line or internet problems). (It ended up
>being easy to add "shadowing" features so that our customer support team
>can connect and help someone).
>
> application ---- utility ----- user
>
>The link between the utility and the user can be broken and
>reestablished without the application even knowing about it. Pretty
>snazzy isn't it :-). It allows us to use our legacy application over
>the internet, using kermit with encryption and authentication. The
>application displays its data even if there is no connection on the
>other end. When the user re-connects, the utility sends a "refresh the
>screen" function key to the application and bingo - they are back where
>they need to be. The reason I don't block data when the user
>disconnects is that I don't know exactly when the user gets
>disconnected. Sometimes, it's not until they login again. That's why I
>let the data pass freely when disconnected and then have a simple
>"refresh" fkey.
>
>My problem is printing.
>
>1) You loose printer output when disconnected; user must request report
>again (and hopefully they stay online longer)
>2) Long reports to the screen makes it impossible to use the screen.
>3) We can't share the printer. (The data is sent directly by the
>application; not by a spooler)
>
>What I would like to do is this: Have my utility read two pseudo ttys
>instead of one; one from the application and one from the spooler. It
>would then multiplex this output to the user. I could give the
>application priority over the spooler. I guess I would also need to
>interpret the application's output to prevent breaking up an escape
>sequence.
>
>Any ideas on how I should do this? Originally I thought that I was
>going to use only K95 in scoansi mode and could use a formula to
>determine when an escape sequence ends, but now I have learned that I
>need to support all terminals connected directly to the system (They
>loved the customer support shadowing idea).
>
>Moreever, I don't have ANY solution to #1 above.
>
>Scott Nelson - Thermeon Corporation - St. Louis Office
>sbnelson@thermeon.com