On Tue, 25 Jul 1995, Jonathan Backus wrote:
 
>         If I know that a PC is being used to access a host application via a
> VT session over a LAN, can that application determine the IP address of said
> PC?  My development language options are Speedware (V7.14) and COBOL.
 
  Hmmm... don't use TCP/IP on MPE, but I would assume that you could go
into the POSIX shell and do a who command which should show the site from
which someone is logged on.  I think I remember someone saying that it's
an environment variable, but I'm not sure.  If it's an environment
variable, it would be very easy to write a UDC called by the logon UDC,
or use a system call from a program, to extract the IP address.  I think
NSCONTROL has an option which shows the IP address of open connections
(you can tell I've never used TCP/IP on MPE before).
 
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Daniel Kosack