RSC/MP Programming Manual

Introduction to Remote Server Call (RSC/MP) Application Program Interface
RSC/MP provides an API and a communications transport on client workstations that
support communication between the workstation and the host system.
The following subsections describe the RSC/MP components on the client workstation.
Application Program Interface
The RSC/MP application program interface (API) provides workstation applications
with a standard interface for communicating with the NonStop system. The API is
distributed as a dynamically linked library (DLL) for Windows 32-bit and 64-bit
applications and as a shared library for UNIX applications. The API consists of function
calls for performing these application tasks:
Establishing and closing a logical connection between a workstation and the
NonStop system.
Starting and ending a session between an application and the Transaction Delivery
Process (TDP) on the NonStop system.
Controlling Transaction Management Facility (TMF) protection for beginning,
ending, and aborting TMF transactions on the NonStop system.
Sending data to and receiving data from application server processes on the
NonStop system.
Obtaining error information about RSC/MP function calls.
Receiving and replying to unsolicited messages sent to an application.
Formatting data.
Synchronizing workstations with the NonStop system clock.
See Section 3, API Functions and Options, for details about the RSC/MP API and API
options. See the Remote Server Call (RSC/MP) Installation and Configuration Guide
for information about installing the RSC/MP API.
Communications Subsystems
The RSC/MP communications subsystem (CSS) resides on the workstation. A CSS
communicates with the TDP on the NonStop system. The RSC/MP CSS consists of
the RSC/MP I/O Manager and the RSC/MP Transport processes.
Note. In versions prior to RSC/MP, Piccolo had to be installed as a separate product for use
as the RSC Transport. The Piccolo product is now integrated into RSC/MP and is called the
RSC/MP Transport.
See the Remote Server Call (RSC/MP) Installation and Configuration Guide for
information on installing the RSC/MP I/O Manager and Transport on the workstation.
HP NonStop Remote Server Call (RSC/MP) Programming Manual — 522360-006
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