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000222_nospam@dontbother.luser_Wed Aug 13 12:10:45 EDT 2003.msg
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Article: 14460 of comp.protocols.kermit.misc
Path: newsmaster.cc.columbia.edu!phl-feed.news.verio.net!nntp1.tagonline.com!nycmny1-snf1.gtei.net!nycmny1-snh1.gtei.net!news.gtei.net!newsfeed.mathworks.com!wn13feed!wn11feed!wn14feed!worldnet.att.net!199.45.49.37!cyclone1.gnilink.net!spamkiller2.gnilink.net!nwrdny01.gnilink.net.POSTED!53ab2750!not-for-mail
From: marty <nospam@dontbother.luser>
Subject: Re: Telnet zmodem
Newsgroups: comp.protocols.kermit.misc
References: <WpYZa.2154$u%2.1308@nwrdny02.gnilink.net> <bhapf2$d0a$1@watsol.cc.columbia.edu> <0r9_a.319$jw4.275@nwrdny03.gnilink.net> <bhbbm5$rrj$1@watsol.cc.columbia.edu>
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Message-ID: <8Vs_a.8529$UB4.2245@nwrdny01.gnilink.net>
Date: Wed, 13 Aug 2003 15:35:32 GMT
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Xref: newsmaster.cc.columbia.edu comp.protocols.kermit.misc:14460
Frank da Cruz wrote:
> In article <0r9_a.319$jw4.275@nwrdny03.gnilink.net>,
> marty <nospam@dontbother.luser> wrote:
> : Frank da Cruz wrote:
> : > In article <WpYZa.2154$u%2.1308@nwrdny02.gnilink.net>,
> : > marty <nospam@dontbother.luser> wrote:
> : > : Using: C-Kermit 8.0.209, 17 Mar 2003, for Linux(RH 8.0)
> : > : ...
> : > : From a C-Kermit prompt I telnet to and log onto the server. The
> : > : procedure for downloading via a telnet connection is to choose the
> : > : download option and name the file one wishes to download. Chose
> : > : xmodem or zmodem (C-Kermit: set protocol zmodem) and the process
> : > : begins...
> : > :
> : > "set protocol zmodem" invokes an external protocol, whatever Red Hat
> : > happens to have installed as "rz" and "sz".
(lrzsz) 0.12.20 I believe this was the last available 'free' version that
is in the public domain?
> :
> : Yes I was aware of that fact, thanks.
> :
> Yes but I didn't know you were aware.
>
> : > : The process finishes with me being dumped back to the C-Kermit
> : > : prompt. Status: FAILURE
> : > :
> : > So "rz" failed.
> :
> : Actually, I wrongly stated that status reported 'FAILURE'. In fact
> : after all of these failed transfers, typing 'Status' at the C-Kermit
> : prompt reports: 'SUCCESS'
> :
> Probably you gave some other command that succeeded after the failed
> file transfer and before the STATUS command. From your posting, it's
> clear that Kermit reported failure.
>
I think I now understand why C-Kermit reports status: SUCCESS ? After the
xfer attempt, I reconnect to the host. The host message is reporting 'File
transfer complete' although there was no transfer?
> : > Some knowledge of serial communication is required. The C-Kermit book
> : > has chapters and chapters explaining all this.
> :
> : Ok, so you would like me to buy your book! Maybe I will, but in the
> : meantime your help is greatly appreciated.
> :
> My point is that it takes a lot of explaining, more than you'd expect me
> to
> type in the response to a newsgroup posting. That's why we wrote the
> books. We definitely do not get rich from them.
Ok, it was just an feeble attempt to inject a bit of my lame humor into this
thread! From re-reading the C-Kermit man-pages I see that you are one of
the main software developers of C-Kermit AS WELL AS author of the man, the
manual, etc. Ouch! Please accept my apology.
>
> : > You have to make sure an effective form of flow control is established
> : > between every pair of devices along the communication path, e.g. local
> : > computer to its modem, modem to modem, remote modem to remote serial
> : > port. See:
> : >
> : > http://www.columbia.edu/kermit/support.html#hints
> :
> : Thanks for the link but one minor detail I failed to mention. My
> : connection to the remote host is via broadband and the Internet, no
> : modem(s) involved. I've tried various flow-control settings for both
> : 'tcpip' and 'remote' to no avail?
> :
> Then it's a Zmodem protocol failure, which is prone to happen over Telnet
> connections due to Telnet NVT rules, which Kermit obeys but many Zmodem
> implementations do not. Some of them might have a command-line option to
> force them to adapt to Telnet connections. Kermit protocol would work a
> lot better
>From what I have read, I am sure your are correct.
-- you might want to mention this to whoever is in charge of
> the other end.
They don't care. This is a free account provided by my local library via a
library cooperative (www.suffolk.lib.ny.us). Heck, the only Online support
they provide is to windows and mac types! It took three or four eMails to
tech support for them to come up with untried software suggestions,
C-Kermit being one of two.
Meanwhile, you'll have to look at the rz and sz programs
> on your Linux system and see what command-line options are available and
> tailor Kermit's SET PROTOCOL command accordingly.
>
> - Frank
*Bottom line*
User error was to blame for the C-Kermit/zmodem/sz/SEND error. Once I
entered the FULL path name to the file I needed to upload all works
perfectly. (I had assummed that because I was in the file directory I
could type SEND filename... never assume)
Downloading is still the issue of failure, but I will continue to
experiment. The fact that I can now do file uploads via telnet/zmodem to
the host is most helpful.
Frank, thanks for your comments and your patience. It is much appreciated.
I won't trouble you further.
marty
--
All UNconstructive criticism will be filed in the appropriate receptacle.