The image shows a flow of HTTP / HTTPS calls to the Forms Listener servlet. In this image, the client is to the left. In the center of the image, the HTTP Listener acts as the network endpoint for the client, keeping the other server computers and ports from being exposed at the firewall.

The Forms Runtime process, in the right side of the image, executes the code contained in a particular Forms application. The Forms Listener servlet manages the creation of a Forms Runtime process for each client and manages the network communications between the client and its associated Forms Runtime process.