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Create a New LU 2.0 Command Called Pause

IP.com Disclosure Number: IPCOM000109762D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 2 page(s) / 73K

Publishing Venue

IBM

Related People

Boeving, RD: AUTHOR [+3]

Abstract

This article describes a new command that has been created for applications using High Level Application Programming Interface (HLAPPI). The new command has created the ability to get the PC and the host back in synchronization when they get out of sync.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Create a New LU 2.0 Command Called Pause

       This article describes a new command that has been
created for applications using High Level Application Programming
Interface (HLAPPI).  The new command has created the ability to get
the PC and the host back in synchronization when they get out of
sync.

      In OfficeVision*/2 (OV/2) V1 mail can be exchanged with
OfficeVision/VM* (OV/VM) or PROFS* user by establishing a VM gateway
connection.  The VM gateway from the PC uses a LU 2 connection
utilizing HLAPPI and Server Requester Programming Interface (SRPI) to
perform the required actions.  During the mail exchange the gateway
machine executes script files called LOGON.PRO and LOGOFF.PRO to
physically logon and logoff of the host service machine.  During the
logon and logoff process certain cases occur when the host and PC get
out of sync.  An out of sync situation is created primarily because
the host and the PC server performance can vary by the amount of
workload they are being asked to process at the given moment.  In
certain cases the host will process the commands that the PC issues,
while the same command may not be processed a few minutes later
because the host took a nanosecond more to process the previous
command and was not ready for the next command to be entered.  The PC
has no way of knowing the difference in host states and cannot
accommodate.  When an out of sync situation occurs, manual
intervention is normally required to bring the two machines in
communications mode again.  The only indication of out of sync
situations is that mail exchange stops.

      Even though the script language provides many commands that
could be used during the logon and the logoff process, no...