Sync serial bridging over Ethernet, was Re: [HECnet] Multi-floor household (DECnet) routing help needed

Tue Jan 22 10:03:43 PST 2013

Johnny Billquist <bqt at softjar.se> writes: 

On 2013-01-22 18:06, G. wrote: > On Tue, 22 Jan 2013 09:57:35 -0500, you
wrote: > >> There is a test suite which attempts to validate whether or
not an emulation >> does VT (DEC) escape sequences correctly.   I posted
a service which I offer >> to run this suit yesterday.   'telnet
great-escape.tmesis.com' and login as >> VTTEST.   There is no password.
It's me or the Tmesis ASCII-art logo appears somewhat scrambled? I'm
using > PuTTY 0.62 (the latest) on Windows XP. I've tried more than once
before > writing this, and got the same result either with a 80x24
terminal size, or > with a full screen PuTTY window that gives more or
less a 120x60 terminal. > > OK, just to be sure I looked at the raw data
with tcpdump and there is really > a CRLF where I think it should not: >
      0x00b0:   316d 6d71 716b 2020 206c 7171 7171 7171   1mmqqk...lqqqqqq
      0x00c0:   7171 7171 7177 7171 7171 7171 7171 7171   qqqqqwqqqqqqqqqq
      0x00d0:   7177 7171 7171 7171 7171 7171 7177 7171   qwqqqqqqqqqqqwqq
      0x00e0:   7177 7171 7171 7171 710d 0a71 7171 7175   qwqqqqqqq..qqqqu
      0x00f0:   1b28 421b 5b30 3b31 6d20 2874 6d29 1b5b   .(B.[0;1m.(tm).[
The above is the second Tmesis logo line, the one ending with
'(tm)'. Note > that there is a CRLF pair on the fourth tcpdump line...
:P 

I believe that is because VMS is wrapping output at 80 characters, and
(unfortunately) don't realize that some characters are non-printing, as
they are part of escape sequences. So the wrapping happens, even though
we're not at column 80 yet. 

Before one is logged in, it had assumed that the terminal buffer (screen
width) was 80 characters.   I normally don't use telnet (in fact, VTTEST
is the only account that can connect REMOTE with telnet) so I didn't see
that the template device was at a default of 80 characters.

-- 
VAXman- A Bored Certified VMS Kernel Mode Hacker       VAXman(at)TMESIS(dot)ORG

Well I speak to machines with the voice of humanity.