Re: Remote sessions hanging

[Jeff Volckaert <jvolckaert@xxxxxxxxxxxxxxxx>]

I just did a fresh install of Redhat 6.1 & TN5250-0.15.6 on my laptop and the 
problem
is still there.  In fact I can replicate the problem at home from my server, 
main
workstation, and laptop.  I have a coworker experiencing the same issue as well.
This problem has been going on for some time and I just attributed it to the 
cable
modem network (i.e. lost packets or bad routing or something).  Before I did the
tests I sent about 2000 ping packets home with 0% loss just to make sure the 
network
was running smooth.  Also, my SSH session never dropped.  The thing I find 
strange is
that commands from the command line work much better than ones picked off the 
menu.
Wierd.

Also before the tests I downloaded and installed the latest Cisco PIX binary 
just to
make sure that was not causing the problem

Jeff

"Jason M. Felice" wrote:

> On Thu, Feb 03, 2000 at 12:30:32PM -0500, Jeff Volckaert wrote:
> > Hello Everybody,
> >
> > I'm using TN5250 0.15.6 to connect from home and have a problem with the 
>session
> > hanging.  I also use it at work everyday and the sessions don't hang.  I 
>have
> > the hospital connected to a cable modem via a Cisco PIX firewall with an
> > IP reserved for the AS/400.  My home Linux server is also connected to a 
>cable
> > modem.
> >
> > I ran TCPDUMP here at work and SSHed into home and ran TN5250.  If I type
> > WRKACTJOB it works fine.  I did ten of these and all were succesfull.  Then 
>I
> > select menu item 2 from my main menu which runs WRKACTJOB and the session 
>will
> > hang about two-thirds of the time.  Watching the tcpdump I can see a few 
>packets
> > go from home to newton and back, but the screen doesn't change.  I can 
>Cntl-Q
> > and restart TN5250 and repeat this test numerous times and once in a while
> > WRKACTJOB from the command line will hang and most of the time '2' off the 
>menu
> > will hang.
>
> Interesting.  I haven't heard of anyone else having this problem, and the fact
> that it's sporadic seems to indicate it's some sort of timing/network issue
> that we're not handling properly - we've had similar problems to this, so I
> know where to look, sort of.
>
> >
> > If I repeat the test with telnet then nothing hangs.
> >
> > Also, I'm having a small problem with TN5250 with the keymapping.  F5 seems 
>to
> > generates 15~ instead of refreshing the screen in WRKSYSACT.  I think all 
>the
> > F13-F24 keys are messed up.  I 'export TERM=5250', then 'loadkeys 
>us5250.map',
> > then 'TN5250 -u work'.  SInce I almost always use XT5250 (which works fine) 
>I
> > only notice the problem when I'm doing this from my home server.
>
> This sounds like you have a version of tn5250 from CVS which has the new
> keyboard handling enabled.  Try commenting out the #define USE_OWN_KEY_PARSER
> near the top of cursesterm.c, recompiling, reinstalling, and testing.  You
> can comment out the line by inserting "//" at the beginning of the line if
> this is the case.
>
> >
> > Any suggestions?
>
> Try reinstalling the software.  Make sure all versions of `lib5250*' are 
>deleted
> from the system, all versions of `tn5250' and `xt5250', most of this (but
> probably not any prior versions) can be removed by doing `make uninstall' in
> the source directory as root, but you should still check (using `locate') to
> make sure you've gotten everything.  Then delete your source directory, your
> tarball, get a fresh source tarball, unpack, rebuild.
>
> I'm not sure this will do anything, but I know that strange things can happen
> when one version's tn5250 is using another's lib5250 or when tn5250 is using
> the wrong version keymap or something.
>
> >
> > TIA,
> > Jeff Volckaert
> >
>
> If it still happens, let me know.  I'm not currently set up to test (I don't
> have access to a 400 until probably middle of next week, nor the time at the
> moment - apologies).
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