When an Internet user requests an ITS service by clicking on a URL hyperlink
or keying in a URL address in a Web browser to run a IACEWT, the request is
processed as follows:
1. The Web browser passes the request to the Web server.
2. The Web server calls the server-specific ITS extension WGate - WGate
is the link between the ITS and the Web server. WGate is a Web server
extension that encapsulates the various supported HTTP server interfaces
such as: CGI (Common Gateway Interface), NSAPI (Netscape Server Application
Programming Interface), ISAPI (Internet Server Application Programming
Interface) in a transparent manner that passes the requested data to the ITS
AGate component.
3. WGate forwards the request to the ITS server process called AGate
(which may or may not reside on the same machine.)
4. AGate is the link between the ITS and the SAP R3 application server.
AGate is the core processing component of the ITS. It receives Web browser
request from WGate and communicates with the SAP R3 application server via
the DIAG or RFC protocol.
5. AGate then processes the requests, and sends all relevant details
(including logon information) to the SAP R3 system, which either starts the
first dialog step of a new transaction of submits further data for the next
dialog step of a transaction already started.
6. SAP R3 starts the transaction for the service requested and sends the
screen output to AGate.
7. When the dialog step has finished, AGate retrieves the result from SAP
R3, and is responsible for session management, including mapping of SAP R3
screen or function modules to HTML, web session timeout handling, SAP R3
connection management and generation of HTML documents that are sent back to
the Web browser client.
8. AGate forwards the formatted HTML page to WGate.
9. WGate forwards the formatted HTML page to the Web server.
10. The Web server sends the formatted HTML page to the Web browser,
where it can be viewed by the user.
The ITS is downward compatible, therefore the ITS release must be the same or
higher than the SAP R/3 kernel release.
There are three restrictions to this approach:
1. The SAP R3 release must be at least version 3.1I or higher.
2. You can only use those Internet Application Components that were
shipped with the SAP R3 release you are using.
3. ITS 6.10 should only be installed in front of an SAP E3 kernel release
6.10 (e.g. CRM 3.0)
*** ITS 4.6D Server Platforms ***
>>Wgate
Microsoft NT 4.0 Server
Microsoft Web Server (ISAPI)
Netscape Web Server (NASPI)
Apache HTTP Server (Apache Module)
Any CGI Web Server (CGI)
Microsoft windows 2000 Server
Microsoft Web Server (ISAPI)
Linux/Intel
Apache HTTP Server (Apache Module)
>>Agate
Microsoft NT4.0 Server
Microsoft Windows 2000 Server
SAP@Web Studio
Microsoft NT 4.0 Workstation
Microsoft Windows 2000 Workstation
*** ITS 6.10 Server Platforms ***
>>Wgate
Microsoft NT 4.0 Server
Microsoft Web Server (ISAPI)
Netscape Web Server (NASPI)
Apache HTTP Server (Apache Module)
Any CGI Web Server (CGI)
Microsoft windows 2000 Server
Microsoft Web Server (ISAPI)
Microsoft XP Server
Linux/Intel
Apache HTTP Server (Apache Module)
>>Agate
Microsoft NT4.0 Server
Microsoft Windows 2000 Server
Microsoft XP Server
SAP@Web Studio
Microsoft NT 4.0 Workstation
Microsoft Windows 2000 Workstation
Microsoft XP Server
