Required?: YES (http, https and server-to-server are optional)

This is the root URL of the web site of the proxy tool server. Requests from both the Blackboard Learn servers and all of the end-users who use the tool come through this site.

Specify the http URL; specifying the https URL forces the proxy tool into using SSL via the Blackboard Learn interface. If an https URL is configured then all simple XML response requests will be sent via SSL.

If the SSL handshake fails then an error is logged and the proxy server falls back to the non-ssl URL for the request (the fallback is not shown in the user interface).

A server-to-server URL can also be specified. If the configuration of the network path from the Blackboard Learn server to the proxy tool server is different than the path from the external world to the proxy tool server then specify a different URL for the Blackboard Learn server to use for the simple XML response requests. This alternate URL is attempted first; if it fails due to an SSL handshake error then Blackboard Learn falls back to the https URL (if configured) and then to the http URL if necessary.

If https is not supported then either do not specify the https URL OR specify a http URL. Blackboard Learn does not force the https URL to be https. Conversely, Blackboard Learn does not force the http URL to be http. To force 100% of communication to be SSL then set them both to https URLs.

Do not use fake certificates to test this because the server-server simple XML response requests fail.

All URL values in the other parts of this XML descriptor is relative to this URL.It is also possible to serve up all of the icons from a different server. If this is desired, add two more baseurls of type="icon-http" and "icon-https". If specified then all images are served up relative to this baseurl instead of the standard baseurls (type="http" and type="https").