Very Computer

Hi,

I have a program that - via kermit - dials and logs into various
database systems. On some of these systems, I produce a file that is
subsequently downloaded. I use the rz and sz programs to do this. The
lines in my kermit command file to do that look like this:

output sz  file_to_pull-\%c.zip\13
run rz  -r < /dev/ttyS0 > /dev/ttyS0

(\%c is a unique number)

Recently, nearly 100% of these file transfers have been failing and I'm
pulling my hair out in an attempt to troubleshoot. What I've done, or
know so far.

1) I'm fairly certain the sending system is OK as I can dial in
   "manually" with Windows Hyperterminal and download a file via
   ZModem protocol.

2) I've tried many switches, the last of which look like this:

output sz -Z -w 2048 -a file_to_pull-\%c.zip\13
run rz -Z -w 2048 -a -vvvvv < /dev/ttyS0 > /dev/ttyS0

Output from the above recieve command looks like this (minus the
astericks):

**********************************************
mode:1
rz waiting to receive.zshhdr: ZRINIT 23000000
zgethdr: ZRINIT 23000000
got ZRINITmode:0

Transfer incomplete
 *Cq0,]file_to_pull-74714813.zip1196 7611317462 100777 0 1 1196kL
                                 +++                        P
OK

OK
+++
ATQ0H0
***********************************************

Interestingly enough, if I comment out the  sz command (so the remote
machine never gets the command to start sending the file) the same thing
happens: the recieve immediately terminates with similar debug output

***********************************************
mode:1
rz waiting to receive.zshhdr: ZRINIT 23000000
zgethdr: ZRINIT 23000000
got ZRINITmode:0

Transfer incomplete
************************************************

Again, this used to work fine!  Anyone have an idea of what could be
going wrong?

--
Posted via http://dbforums.com

Quote:>I have a program that - via kermit - dials and logs into various
>database systems. On some of these systems, I produce a file that is
>subsequently downloaded. I use the rz and sz programs to do this.

what version of kermit are you using?

Quote:>Recently, nearly 100% of these file transfers have been failing and I'm
>pulling my hair out in an attempt to troubleshoot. What I've done, or
>know so far.

>1) I'm fairly certain the sending system is OK as I can dial in
>   "manually" with Windows Hyperterminal and download a file via
>   ZModem protocol.

Quote:>Again, this used to work fine!  Anyone have an idea of what could be
>going wrong?

--
bringing you boring signatures for 17 years

Thanks for the note! I actually solved this and was going to post saying
so, but the site was down.

why?  you are using kermit on your side, use kermit on the remote.
what version of kermit are you using?

I'm  using rz/sz in this case because the remote machine can only send
via ZMODEM.

I'm still not sure why this started failing so consistently. In
retrospect, I think the kermit code I posted before (to do the file
transfer) may have been faulty from day one. I remember thinking at one
point that the file transfer failed at a rate that was higher than
normal. I just never had time to investigate it before, and since it did
suceed after a few attempts, it was never thought to be bad.

Anyway, after perusing the kermit manual, I found that there is a way
you can do ZModem file transfers from within kermit (more or less).
So instead of making an out-and-out system cal to recieve the file, I
now do this:

set terminal autodownload off
set proto zmodem rz {rz -a} {sz %s} {sz -a %s} rz {rz -a}
set file type text
output sz -Z -w 2048 -a mavmail-\%c.zip\13
wait 1
receive

I'm not sure I need the wait, or the parameters to change the window
size, but the above is working. And it works very quickly too.

Thanks again for your input. It is greatly appreciated.

--
Posted via http://dbforums.com

Quote:>>why?  you are using kermit on your side, use kermit on the remote.
>>what version of kermit are you using?

>I'm  using rz/sz in this case because the remote machine can only send
>via ZMODEM.

are you aware of g-kermit?  it doesn't have any of the user interface
stuff, it's just a protocol module, like sz and rz.  g-kermit is typically
about the same size as sz and rz on any given platform.

Quote:>I'm still not sure why this started failing so consistently. In
>retrospect, I think the kermit code I posted before (to do the file
>transfer) may have been faulty from day one. I remember thinking at one
>point that the file transfer failed at a rate that was higher than
>normal.

--
bringing you boring signatures for 17 years