Re: TELNET question

Theodore Ts'o <> Fri, 18 November 1994 20:31 UTC

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From: Theodore Ts'o <>
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In-Reply-To: braden@ISI.EDU's message of Fri, 18 Nov 1994 12:12:43 -0800, <>
Subject: Re: TELNET question
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   Date: Fri, 18 Nov 1994 12:12:43 -0800
   From: braden@ISI.EDU

   Both FTP and SMTP both use "telnet streams", with CRLF as end of line.
   I would expect that 1. was the right answer, as a question of philosophy.
   Of course, reality sometimes intervenes...

True, although I don't think SMTP is obligated to handle telnet IAC
options.  FTP does, if I remember correctly.  (Easy enough to look up).

Actually, after doing a bit of looking at the BSD telnet implementation,
I couldn't see anything that indicates that the BSD telnet
implementation would do different things as far as CRLF interpretation
if a non-standard port was given.  The only that might happen with a
nonstandard port is that unless the non-standard port was prefixed with
a '-', the telnet client (sorry, telnet user implementation) wouldn't
actually initiate any telnet options negotiation --- which is legal, as
far as I can tell.

Of course, it could very well be that I missed something obvious (this
was a less than 3 minute investigation) or it was completely different
implementation that was under going testing....

						- Ted