Re: Telnet Server

["Jeffrey Silberberg" <jsilberberg@xxxxxxxxxxxxxx>]

Shannon,

        Just what is the objective and details of what you are attempting to
implement  ??

Jeffrey M. Silberberg
Independent Consultant
CompuDesigns, Inc.
Atlanta

AS SOON AS I KNOW THE ANSWERS
THEY CHANGE THE QUESTIONS

----- Original Message -----
From: Shannon O'Donnell <orion@auburnctnet.com>
To: <midrange-l@midrange.com>
Sent: Friday, August 31, 2001 10:32 AM
Subject: Re: Telnet Server


Thanks Simon!

That's a lot more information than I had when I started down this road!

I may contact IBM about this, but since I need a solution to a problem
immediately, it won't be anytime soon. I'll be spending my time now looking
for an alternate way of doing what I need to do.

Thanks for the info!

Shannon O'Donnell
----- Original Message -----
From: "Simon Coulter" <shc@flybynight.com.au>
To: <midrange-l@midrange.com>
Sent: Thursday, August 30, 2001 11:37 PM
Subject: Re: Telnet Server


> M
> Hello Shannon,
>
> I tested the information I sent earlier on VRM440 and found that it no
longer
> works.  As part of the architectural change to Telnet that occured at 440
the
> QTGSTART program (which is what gets called by STRTCPSVR *TELNET) gets to
see
> if TELNET is currently active.  It is not doing that by checking the port
> however I haven't bothered trying to find out what it does check.
QTGSTART
> sends TCP1A04 - "Telnet currently active" if it finds Telnet is already
> running.
>
> The nett result is that on 440 and later releases only one instance of
TELNET
> can be active.  That single instance can (and does) listen on multiple
ports
> but they haven't written it to handle more than one port per service name.
> They probably just use getservbyname() which returns the first entry with
the
> requested name and protocol from the SERVICES table.  That approach is
> reasonable and consistent with most TCP applications.  You could raise a
DCR
> and request they use getservent() and then they could process all the
entries
> in the SERVICES table.  I notice that TELNET uses accept() rather than the
more
> useful select() so they would have a bit of work to implement multiple
servers.
>
> Regards,
> Simon Coulter.
>
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