Subj : Re: Question for telnet/BBS gurus.
To   : Mark Lewis
From : Mark Hofmann
Date : Thu Jun 18 2020 08:59 am


ml> do you mean like telnetting from one system to another and then
ml> downloading and expecting it to cross both telnet hops?
ml> 
ml> if yes, i would first be looking at the connection between the two
ml> servers and seeing if it is a binary capable stream or not... if it is
ml> not, is there an attempt to switch it to being so? whatever the client
ml> passes to the first server might should also be passed to the second
ml> server so channel switches like this can take place...

Basically, yes.  Where one program accepts the telnet and then performs another telnet to another application.  

The wildcard here is the second destination is running Raymond Gwinn's SIO drivers (telnet emulation for serial ports).  Transfers work fine over telnet if you go directly to the nodes running SIO.  It is only the "double telnet" situation where the downloads don't work.

Figure it has something to do with telnet control codes/binary mode or something.  The xfers will start but get lots of errors and eventually terminate.  

- Mark

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