Using John's approach you would have to worry about things like keeping
track of each client session IP address and port number so you could support
multiple sessions from a client and during the replay, send the proper input
to the right (new) TN3270 session.

Your "transparent proxy" would also look to the TN3270 server to be the
client machine (IP address of connection origin).  This can cause all sorts
of problems with how the server allows or decides how your client can use
its services and what LUs are allocated to its sessions. 

And to build the screen image buffer from the 3270 data streams, you have to
basically write a 3270 emulator.

Agreed, these things can be handled, but I don't think this would be an easy
path to do what he wants.

Chuck Arney
illustro Systems International, LLC
http://www.illustro.com
Access 3270 data from anywhere with z/XML-Host
Access 3270 apps from the web with z/Web-Host
Access CMS minidisks from z/OS or VSE with CMSACCess
Voice: 972-296-6166

> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
> Behalf Of McKown, John
> Sent: Thursday, September 22, 2005 10:53 AM
> To: IBM-MAIN@BAMA.UA.EDU
> Subject: Re: HOD/HACL running on z/OS?
> 

<<lots of details snipped>>

> 
> I suggest this simply because, to me, this TCPIP program would be easier
> to code than the equivalent VTAM program.
> 

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