Linux-Hams archive - December 1997: Re: Convers/AX25/CRLF

Re: Convers/AX25/CRLF

Barry Winch (omwzv@travedsl.de)
Tue, 9 Dec 1997 18:08:51 -4


Hi Tomi, not sure whether you got the original reply or not, so here
is a second attempt. Your axconv programme sounds like it is tailor
made! I would like to try it out if possible?

73 Barry

> On Sun, 7 Dec 1997,
Barry Winch wrote:
>
> > I can connect over a radio link to my node and then issue the convers
> > alias, set up as follows in node.conf
> > ALIAS CONVERS "telnet 44.135.97.17 3600"
> >
> > Where the problem arises is if I connect direct to convers over ax25,
> > with the following in ax25d.conf:
> >
> > [VE3NAV-2 VIA AX0]
> > NOCALL * * * * * * L
> > default * * * * * * - root /bin/telnet telnet 44.135.97.17 3600
> >
> > with this connection, the received text has no line feeds, only
> > cariage returns, therefore the screen is difficult to read, any
> > transmitted data is not rebroadcast on the convers system, nor is any
> > request for help or info commands actioned even /q doesn't work!!
> > when I send text to the convers node, all that is broadcast is
> > <ve3nav>
>
> Yep. The latter won't work because of incompatibility of the
> end-of-line conventions between different protocols. The packet
> radio protocols (ax25/netrom/rose) use CR, internet protocols
> traditionally use CRLF but TPP seems to use only LF if you telnet to
> it (it does understand the standard CRLF on input though). When you
> use the node alias, it is node that makes the necessary end-of-line
> conversions.
>
> > I can ax25 connect to another node in town and the formatting comes
> > out ok, as it does if I connect through my own node, so I dont
> > believe the problem lies with the TNC or terminal programme settings.
> > It seems that I don't have AX25 set up coreectly.
>
> Nothing wrong in your AX25 settings.
>
> > Any ideas please.
>
> I have made a simple program called axconv that does exactly what
> you need. It can be called from ax25d and it then connects to the
> specified convers server, optionally logs in with the callsign of
> the connectee and then does the end-of-line conversions. It also
> buffers the data for a while (0,5 sec) so that when TPP sends short
> lines one after another in separate frames (as it often does), my
> program gathers them and sends them out in larger chunks. This is
> really useful in packet radio environment.
>
> I have sent the program to Terry for inclusion in the next
> ax25-utils release but in the mean while I can send it to you if you
> want.
>
> --
> ---Tomi Manninen / nzkrgb.yctlox@linzu5-101-47.utaonline.at / OH2BNS @
> OH2RBI.FIN.EU---
>

_________________________________________________
Barry Winch
ve3nav/va3wi

Internet ipbzsjl@mx.dy.fi
BBS ve3nav@ve3nav.#eon.on.can.noam