Welllllll...it's doing a 3270 write, is the point. You have up to one 3270 
screen at a time: it's not going to be something that can run as a background 
process without a pretty big architectural change, one that will break it for 
every emulator until they catch up. So where's the win there? "Just use FTP." 
In fact, if I were still an emulator vendor and this change did happen, I would 
probably look into supporting FTP before I'd change my IND$FILE support.

Anyone remember where the IND$FILE protocol was documented? I do...

-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of 
Charles Mills
Sent: Wednesday, September 25, 2024 4:57 PM
To: [email protected]
Subject: Re: Mainframe FTP status

That was true once upon a time but has not been true since about 1995. IND$FILE 
uses a 3270 sub-protocol called "structured fields" and can transfer up to 32K 
of binary data in a block.

It's still single-task and half-duplex, and layered into TSO, all of which 
makes it a lot slower than FTP, but it is NOT 3270 screen oriented.

Charles

On Wed, 25 Sep 2024 15:30:50 -0400, David Spiegel <[email protected]> 
wrote:

>Hi Gil,
>If IND$FILE replaces FTP, it would be slow beyond belief.
>The way that IND$FILE works is that it reads a screenfull (24*80=1920
>Bytes) at a time and deals with the this buffer.
>I cannot imagine the time it would take to Upload/Download a large TRS 
>Dataset.

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