TRANSFER Programming Manual

2 TRANSFER Application
Components
40970 Tandem Computers Incorporated 2–1
A TRANSFER application consists of a number of processes. Some of these processes
are supplied as part of the TRANSFER delivery system or PATHWAY and some are
written by the application programmer.
The following components are written by the application programmer for a specific
application:
Clients
Agents
Specialized servers that may be required by clients and agents
Tandem supplies clients and agents for the TRANSFER administration and for the
PS MAIL application.
The following components are supplied by the TRANSFER delivery system:
TRANSFER interactive server (TISERV)
TRANSFER asynchronous processes
Name Server
Text Server
Other TRANSFER components to which you can add extensions, including the
ADMIN client and the TMANAGER client, both of which are accessible to your
application
These components communicate and interact with each other through the use of
interprocess communication (IPC) messages.
When these processes run under the PATHWAY transaction processing system, they
take advantage of the requester-server model on which all PATHWAY applications
are based. Figure 2-1 illustrates these processes and shows how they interact within
the framework of PATHWAY.
This section describes each TRANSFER component and concludes with a discussion of
IPC messages.
Rules for starting TRANSFER components are listed in the TRANSFER Installation and
Management Guide.