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000411_news@newsmaster….columbia.edu _Wed Dec 9 09:55:18 1998.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc,comp.unix.solaris
Subject: Re: kermit 6.1.193 Beta.05 no xmodem protocol
Date: 9 Dec 1998 14:53:50 GMT
Organization: Columbia University
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In article <913198664.933802@scarlatti>,
hans mayer <mayer1b@unisys.co.at> wrote:
: i tried to install c-kermit 6.1.193 Beta.05 on sun sparc solaris 2.5.1
: the reason is binary file transfer over serial line with xmodem protocol.
: this is the only available protocol on the other site.
:
: i tried -DXYZ_INTERNAL, but i got errors on linking step. see below.
: this seems to be a bug.
:
It's not a bug. XYZ_INTERNAL is not documented or advertised anywhere as
doing anything. You have to use external rx/sx programs.
: so i tried with external programms rx and sx
: receiving files worked now. but not transmitting. i did
: a truss -t exec and i can see, that kermit forkes, if i try to
: receive a file, but nothing happens, if keying in the transmit command.
: a second bug ?
:
No. First of all, you must ensure you have rx and sx programs that use
stdio, so they can be redirected over the SET LINE or SET HOST device.
Second, XMODEM is not a robust protocol. It demands a 100% 8-bit transparent
connection, and you probably don't have one. To cite one example: it is
incompatible with Xon/Xoff flow control. It probably also will not work over
a Telnet connection, through a terminal server, etc, because of transparency
issues.
- Frank