[770] in netbsd-help mailing list archive
telnet doubles characters?
daemon@ATHENA.MIT.EDU (John Hawkinson)
Wed Feb 7 04:41:55 1996
Date: Wed, 7 Feb 1996 04:37:43 -0500
To: netbsd-help@MIT.EDU
From: John Hawkinson <jhawk@MIT.EDU>
Using the telnet in /usr/athena/bin (NetBSD) to talk to a SunOS 4.1.4
box, I noticed that in some cases I get doubled characters.
I noticed this while scanning through logfiles and wondering why some
lines looked longer than others, and observed the problem went away
when I hit ^L in less.
I was able to reproduce this fairly straightforwardly with repeated
invokations of "lptest"; it seems to very depending on how much data
is output. For instance "lptest 60" doesn't generate problems, but
"lptest 60 100" seems to have one instance each time.
An example:
> lptest 60 100
[...]
rstuvwxyz{|}~ !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN
stuvwxyz{|}~ !"#$%&'()*+,-./01234566789:;<=>?@ABCDEFGHIJKLMNO
tuvwxyz{|}~ !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOP
(note the doubled 6 in the middle line.). Here's another
fragment:
YZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~ !"#$%&'()*+,-./012345
Z[\]^_`abcdefghijklmnopqrstuvwxyz{|}~ !"#$%&'()*+,,-./0123456
[\]^_`abcdefghijklmnopqrstuvwxyz{|}~ !"#$%&'()*+,-./01234567
Note that the doubled character changes in position. The same problem
shows up if I telnet to granola from itself. It does not show up if I
telnet to the chargen port, suggesting it might be an
optioning-related bug?
Using the /usr/athena/bin/telnet client on bill (to granola), I don't
see this problem.
I'm really too tired to debug this now, and am trying to finish
reading TWO CROWNS FOR AMERICA, so I'm sending this to netbsd-help
instead of netbsd-dev and hoping someone else will debug it.
--jhawk
