| AGate |
Main processing component of the Internet Transaction Server (ITS).
The AGate (application gateway) links the ITS to the R/3 System by receiving Web browser requests from the WGate (Web gateway) via the Web server and communicating with the R/3 application server via the DIAG or RFC protocol.
A single AGate instance consists of one or more AGate processes plus the ITS Mapping Manager, which is implemented as a Windows NT service. An AGate instance is part of only one ITS instance, but one ITS instance can contain multiple AGate instances.
When the AGate receives requests, it processes them and sends all the details to the R/3 System, which either starts the first dialog step of a new transaction or submits further data for the next dialog step of a transaction already in progress. When a dialog step finishes, the AGate retrieves the result from R/3, processes it and sends the response back to the WGate as an HTML page.