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000205_news@columbia.edu _Tue Apr 18 14:37:16 2000.msg
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From: "A. B. HUNT (K3531)" <ahunt2@ford.com>
Subject: Change in Kermit Protocol between Kermit V5 and V6
Date: Tue, 18 Apr 2000 13:28:41 -0400
Organization: sys0$11:[hunt]organization
Message-ID: <38FC6309.A499725@ford.com>
To: kermit.misc@columbia.edu
We have an application that uses Kermit to download files to a PC from
VAX/OpenVMS. The PC is running Keaterm which includes Kermit. The
VAX/OpenVMS Kermit we used was:
C-Kermit 5A(188), 23 Nov 92, OpenVMS VAX
When we installed the latest Kermit:
C-Kermit 6.0.192, 6 Sep 96, for OpenVMS VAX
the procedure broke. On the PC a KeaTerm macro is being activated which
looks for the Kermit packets and expects a certain format for the
characters wrapped around the packet.
The following lines in the middle of macro is the key to the problem.
KerSpkt = "^A0 S*^M" // note the * in this and next string
KerIpkt = "^A0 I*^M" // is a wild card ie any number of characters
As you can see the macro is looking for the Kermit packet to start with
the characters "^A0 S" and "^A0 I" with any number of characters in the
middle and ending with "^M". The old Kermit does this but the new
Kermit starts the packets with "^A8 S" and "^A8 I" and ends them with
"^M". The second character of each packet is an "8" instead of an "0"
which breaks the macro.
Can anyone explain the change in behavior and is there a way to control
whether a "0" or an "8" is sent? I haven't found anything in the Kermit
manual that talks about it. The Kermit in KeaTerm appears to take
either format. It is just the macro that breaks.
Thanks for any help or advice.