HP SNA 3270 Data Stream Programming Interface for OpenVMS

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Software

Product

Description

PRODUCT NAME: HP SNA 3270 Data Stream Programming SPD 26.87.11

Interface for OpenVMS, Version 1.8

This SPD describes HP SNA 3270 Data Stream Pro-

gramming Interface for OpenVMS, which is available for

the OpenVMS I64, OpenVMS Alpha and OpenVMS VAX

platforms. All information applies to all platforms unless

otherwise indicated.

DESCRIPTION

HP SNA 3270 Data Stream Programming Interface for

OpenVMS (3270 DS) is a layered software product that

allows user-written applications running on suitably con-

ﬁgured OpenVMS systems within a DECnet or TCP/IP

network or on suitably conﬁgured OpenVMS systems

within an OpenVMS SNA environment to exchange

messages with cooperating applications on an IBM host.

The 3270 DS software exists in the OpenVMS system

as a shareable image. Access between the cooperating

HP and IBM applications is via one of the following SNA

servers or gateways:

TCP/IP or DECnet Connections

• HP SNA Peer Server

• HP SNA Domain Gateway

• HP SNA Access Server for Windows NT®

• HP SNA Server for OpenVMS Alpha, a layered prod-

uct that supports local access as well as TCP/IP and

DECnet clients

DECnet Only Connections

• HP DECnet SNA Gateway for Synchronous Trans-

port

• HP DECnet SNA Gateway for Channel Transport

• HP SNA Server for OpenVMS VAX , an OpenVMS

VAX layered product that supports local access as

well as remote DECnet clients

The 3270 DS programming interface is a collection of

subroutines that provides an easy-to-use interface for

the SNA server or gateway application programmer who

has a speciﬁc need to interface to an IBM application

subsystem that uses the LU type 2 (LU2) protocol. The

product can be used with many types of applications.

As an example, a customized 3270 terminal emulator

application can be written by a user and layered on top

of 3270 DS. Applications can be event driven or syn-

chronous in nature with no loss in available functions.

Features

The 3270 DS product is designed to insulate the

OpenVMS application programmer from the inner work-

ings of the SNA network environment as much as possi-

ble, thus allowing the user to concentrate on solving the

application problem. The product performs the following

SNA functions on the user’s behalf:

• Receives and interprets the bind

• Accepts the bind and starts the session

• Maintains the state machines for chaining, bracket-

ing, and data ﬂow control

• Processes an Unbind Type 2 automatically

• Allows, on supported SNA servers and gate-

ways, secured Logical Unit (LU) access via the

SNA3270$REQUEST_CONNECT procedure call.

As a result, the OpenVMS user is required to per-

form a minimum of SNA functions, including processing

the CLEAR and CANCEL functions and handling con-

tention.

December 2006

Summary of content (6 pages)

PAGE 1
Software Product Description PRODUCT NAME: HP SNA 3270 Data Stream Programming Interface for OpenVMS, Version 1.8 This SPD describes HP SNA 3270 Data Stream Programming Interface for OpenVMS, which is available for the OpenVMS I64, OpenVMS Alpha and OpenVMS VAX platforms. All information applies to all platforms unless otherwise indicated.
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HP SNA 3270 Data Stream Programming Interface for OpenVMS, Version 1.8 SPD 26.87.11 Asynchronous Event Notification This product is a set of subroutines used to perform such functions as establishing sessions, sending data, receiving data, and disconnecting sessions. In addition, the 3270 DS interface may be used to interpret the 3270 data stream and build a screen image. The OpenVMS application is then free to interact with the screen image.
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HP SNA 3270 Data Stream Programming Interface for OpenVMS, Version 1.8 SPD 26.87.11 Disk Space Requirements (Block Cluster Size = 1) Choose a networking option appropriate for the selected OpenVMS version from the following table: Disk space required for installation: OpenVMS I64 OpenVMS 18,500 blocks (9.25 MB) OpenVMS Alpha 18,000 blocks (9.0 MB) OpenVMS VAX 17,900 blocks (9.0 MB) TCP/IP DECnet IV DECnet V 8.3 (I64) 5.6 8.3 8.3 8.2-1 (I64) 5.5 8.2-1 8.2-1 8.3 (Alpha) 5.6 8.3 8.
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HP SNA 3270 Data Stream Programming Interface for OpenVMS, Version 1.8 SPD 26.87.11 SOFTWARE LICENSING Media and Documentation License Management Facility Support Product binary kits and online documentation are delivered on consolidated media libraries. Delivery model varies by platform. HP SNA 3270 Data Stream Programming Interface for OpenVMS supports the OpenVMS License Management Facility (LMF).
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HP SNA 3270 Data Stream Programming Interface for OpenVMS, Version 1.8 SPD 26.87.11 SOFTWARE PRODUCT SERVICES A variety of service options are available from HP. For more information, contact your HP account representative or distributor. Information is also available on www.hp.com/hps/software. SOFTWARE WARRANTY This software is provided by HP with a ninety-day conformance warranty in accordance with the HP warranty terms applicable to a license purchase.
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