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000367_news@watsun.cc.columbia.edu _Mon Mar 15 16:45:07 1999.msg
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From: jaltman@watsun.cc.columbia.edu (Jeffrey Altman)
Subject: Re: Carrier test
Date: 15 Mar 1999 21:44:42 GMT
Organization: Columbia University
Message-ID: <7cjv0a$aoi$1@newsmaster.cc.columbia.edu>
To: kermit.misc@watsun.cc.columbia.edu
In article <7cjjme$gd6$1@solaris.cc.vt.edu>,
Tim Rhodes <rhodes@rhodes.cc.vt.edu> wrote:
: : However, if Carrier-Watch is ON and you are using INPUT commands the INPUT
: : command will fail if Carrier-Detect has dropped assuming there is no
: : data waiting to be read. Under what circumstances do you find that
: : carrier-detect is not being noticed?
:
: : What version of C-kermit are you using and on which operating system
: : and version?
:
: Using C-Kermit 6.0.192, 6 Sep 96, for Solaris 2.x on Solaris 2.6.
:
: The app is fairly brain dead procedure when the server issues a login
: prompt and the client sends a login. Unsuccessful login is indicated
: by the server hanging up (the Procomm script waits 5 seconds and then
: tests to see if connection still has carrier detect). If still connected,
: the script attempts to receive a file (using kermit protocol).
:
: In my testing, I have SET MODEM CARRIER-WATCH ON. After login, the
: script issues a receive. The server may or may not have a file to be
: sent. If no file is available, the server hangs up. The outstanding
: receive does not notice carrier dropping. The script works by the
: receive failing with message "?Sent too many NAKs." and success/failure
: set properly.
You can replicate the brain-dead behavior with
PAUSE 5
WAIT 1 CD
IF FAILURE END 1 No carrier signal present
You should also try the C-Kermit 7.0 Beta. 7.0 does a significantly '
better job of handling carrier-detect loss during file transfers.
The RECEIVE command should return immediately with it.
http://www.kermit-project.org/ck70.html
Jeffrey Altman * Sr.Software Designer * Kermit-95 for Win32 and OS/2
The Kermit Project * Columbia University
612 West 115th St #716 * New York, NY * 10025
http://www.kermit-project.org/k95.html * kermit-support@kermit-project.org