Re: Sz and rz problem

Douglas Warren (dwarren@alpha.NetUSA.Net)
Mon, 14 Jul 1997 12:46:27 -0400 (EDT)

On Mon, 14 Jul 1997, Rich Burroughs wrote:
> We have several PM3s running ComOS 3.5.1b19 and fed by channelized T1s.
> This seems to work fine for most things, but I have a co-located client
> who is having a weird problem.
> They have a custom client/server app. The end user dials into the PM3
> and is telnetted to the co-located server and logged in. The server
> does an rz and gets some info from the client end of the app, then does
> an sz to send some back.
>
> problem. They send a small amount of data and then the connection just
> freezes up. We were able to duplicate this under other circumstances
> -- telnetting from the PM3 to the co-located server and catting a large
> file caused pretty much the same thing.

Is the co-lo server running Linux? I've reported it before, and several
other people have confirmed that Comos 3.5 does not like sz under linux
(well particuarlly 2.0.30 since that's what everyone who reported the
problem seems to be running) My personal belief, is that something in the
rlogin code in ComOS and in Linux is making it not be 8 bit clean, and
Linux is getting an XOFF and suspends transmittal until it receives an
XON again. However, so far I haven't found anything deffinate about
the situation, though it's been strking us for the past several months.

---
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