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000367_news@columbia.edu_Sat Jul 15 16:02:10 1995.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: Send Packet too long?
Date: 15 Jul 1995 16:02:10 GMT
Organization: Columbia University
Lines: 31
Message-Id: <3u8oq2$1s4@apakabar.cc.columbia.edu>
References: <3u3lrs$eak@cronkite.ocis.temple.edu> <3u5r36$o4@apakabar.cc.columbia.edu> <3u66hj$kam@cronkite.ocis.temple.edu>
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In article <3u66hj$kam@cronkite.ocis.temple.edu>,
John Price <jprice@astro.ocis.temple.edu> wrote:
: Frank da Cruz (fdc@watsun.cc.columbia.edu) wrote:
: [ what kind of connection to IBM mainframe? ... ]
:
: Well now, there's a question. We get to the VM through two different ways
: -- one is through a Cisco router with it's own internal 3270 emulator,
: the other is in 'linemode'. Same error both ways.
:
You should be aware that Cisco's tn3270 versions prior to 10.3
do not allow Kermit file transfers in any straightforward way. In some
cases, packets might have to be extremely short -- 40 characters or less.
: The exact error is "Internal Error: Send packet too long". I've checked
: again, and what is happening is that MS Kermit 3.14 is trying to send a
: packet of length 65. (after I have set "send packet" to 64). That appears
: to be where it's getting hung up.
:
: The really interesting part is -- without doing *anything* to the VM, I
: can get this binary file to upload at 63 or at 65 (via "set send pack"),
: but not at 64....
:
So evidently we have some kind of off-by-one error when MS-DOS Kermit is
supposed to be sending packets that are 64 bytes long. We'll look into
this.
: I have a packet log available (two, actually) if it helps.
:
By all means, email them to kermit@columbia.edu.
- Frank