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April 1994

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Subject:
From:
Kent Covert <[log in to unmask]>
Reply To:
Miami University VMS News <[log in to unmask]>
Date:
Tue, 19 Apr 1994 07:41:13 -0500
Content-Type:
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In article <1994Apr17.114030.24475@miavx1>, [log in to unmask]
writes:
>         I Have a couple of questions about using kermit.  I have been using
> it for a while to transfer files to my pc.  I am able to get throughput of
> about 800-900 cps using the following settings:
> SET XFER CANCELLATION OFF
> SET FLOW-CONTROL XON/XOFF
> SET WINDOW-SIZE 31
> SET BUFFERS 9024 9024
> SET FILE TYPE BIN
> SEND FILENAME
>
>         I am using Crosstalk for Windows on an Intel 14.4 modem.  I have
> checked all my kermit settings for Crosstalk and they seem to match, but I am
> never able to finish transfers greater than 200,000 bytes or so.  The screen
> stops showing the transfer and I get an error message saying that the host
has
> cancelled the transfer.  Is there some wayto prevent this from happening.
 
There are a couple of problems here.
 
1) There was a problem with our configuration of Kermit.  Kermit on the VAX
was set to default to no parity.  It appears that Kermit normally
nogotiates this at the beginning of the transfer and therefore usually
isn't a problem.  But, this negotiation was not taking place if all of the
following conditions are true:
    1) You are using MS-Kermit 3.11 (or a look-alike such as Crosstalk),
    2) you are not using server mode, and
    3) you try to download a VMS file of type STREAM_LF (which is the file
        type of files ftp'ed in binary mode).
We fixed this problem this morning by setting the default parity to even.
 
2) When using the SET FILE TYPE BINARY command, VMS actually tries to guess
the type of the file (This seems counter-intuitive, but that's what the
manual says).  For STREAM_LF type files, the system guesses that they're
actually of type TEXT and will download them as such.  To tell the system
that you REALLY mean binary mode, use the command SET FILE TYPE IMAGE.
 
--
                                     Kent Covert, Software Coordinator
                                     Miami Computing and Information Services
                                     Miami University, Oxford, OH
                                     [log in to unmask]  (internet)
                                     kacovert@miavx1                 (bitnet)

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