SeeView Server Gateway (SSG) Manual

Introducing SSG
HP NonStop SeeView Server Gateway (SSG) Manual—526356-004
1-4
Components
Logically the CSG and SSG can be thought of as a bridge or pipe between Windows
NT-based or Windows programs and NonStop OS programs. For example, client
applications use the workstation-based CSG as a gateway to the HP host SSG in order
to communicate with host subsystem command interpreters (CIs).
One important aspect of the Client Server Gateway is that it provides a workstation
data communications gateway, allowing client applications to communicate with the
command interpreter world.
An example of this form of communication appears in Figure 1-3. In this example, the
SSGSendPrivate procedure call allows a Windows program to communicate with the
NonStop OS command interpreter (CI), such as SCF, with this API call:
SSGSendPrivate ... "SCF", "LISTDEV DISK", ...
Figure 1-3 shows the message flow that occurs when a client application makes a
CSG/SSG API call.
Figure 1-2. The Client Server Gateway
Figure 1-3. Client Application Message Flow
Client
CSG
CI
VST002.vsd
Client
SSG
Workstation
Host
CI
Client Client CI
VST003.vsd
. . .
Workstation
Host
. . .
CSG
Client
Server
Gateway
2
1
6
SSG
SeeView
Server
Gateway
5
3
4