Configuring the Web Interface › How the Web Interface Works

How the Web Interface Works

The CA SDM web interface uses a standard HTTP server, such as Tomcat, Apache, or Microsoft Internet Information Server (IIS).

• With the Tomcat server, a Java Servlet, pdmweb.jar, processes web requests.
• With Apache or IIS server, a CGI interface, pdmweb.exe, processes web requests.

The CA SDM web interface works as follows:

1. When a user requests a CA SDM web page, the HTTP server invokes pdmweb.jar or pdmweb.exe which sets up a connection with a CA SDM daemon (or Windows service) named the web engine.
2. The web engine interprets the user request. Most requests require the web engine to look up an HTML template (HTMPL) file and translate it into standard HTML.
3. Usually, the translation process requires the web engine to communicate with a CA SDM server to read or update the database and include database information in the generated HTML.
4. After the HTML is complete, the web engine sends it to pdmweb.jar or pdmweb.exe, which in turn sends it back to the user’s browser.
5. After the data is sent back to the browser, pdmweb.exe terminates but pdmweb.jar stays active.