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000084_fdc@columbia.edu_Mon May 20 18:04:59 EDT 2002.msg
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Article: 13378 of comp.protocols.kermit.misc
Path: newsmaster.cc.columbia.edu!news.columbia.edu!news-not-for-mail
From: fdc@columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: REGET not as clever as RESEND?
Date: 20 May 2002 18:04:44 -0400
Organization: Columbia University
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Message-ID: <acbrts$1c7$1@watsol.cc.columbia.edu>
References: <acbqst$bj2$1@panix3.panix.com>
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Xref: newsmaster.cc.columbia.edu comp.protocols.kermit.misc:13378
In article <acbqst$bj2$1@panix3.panix.com>,
David Combs <dkcombs@panix.com> wrote:
: RESEND does a pretty good job of almost instantly
: recovering up to the %done that it had been
: at when the prior transfer crapped out.
:
: REGET seems to me so far to do a much POORER
: job of doing that, like recovering up to only
: maybe 1/3 of how far the prior get had gotten,
: and then rereading a whole lot of stuff that
: had (presumably) already been read in the prior
: kermit-run.
:
: Am I the only one who has seen this?
:
It doesn't ring a bell. Are you saying it corrupts
the file, or just takes longer to resynchronize before
resuming the download?
: (NOTE: I was using -i)
:
: QUESTION: what is the SIZE of the blocks
: that kermit sends? (by default)
:
The sender sends blocks (packets) of whatever length
the receiver tells it to. SHOW PROTOCOL at the
receiver, see the receive packet length.
: Now, kermit registers 100%, but starts getting
: errors (two per second) trying to get the last
: several bytes, it seems.
:
That doesn't have anything to do with RESEND or REGET.
If it happens, it's because of transmission errors,
which could happen with any kind of file transfer.
Is this a straight dialup connection or a Telnet
connection or what?
If straight dialup, what kind of modem? What serial
speed? Are you using RTS/CTS (hardware) flow control?
If Telnet, the same questions about the underlying PPP
driver.
What version of Kermit do you have on your end? (Panix
has the latest, 8.0.201, on its end, at least if we're
talking about the same Panix).
Just now I tried downloading a 3MB file from Panix,
interrupting the download, REGET'ing the file, and
repeating the process several times until it was fully
downloaded. There were no delays, no errors, no
failures. This was using Kermit 95 1.1.21 as a
client.
- Frank