The AICC specification is unclear on what protocol should be used as the default when no protocol is specified in the AICC_URL parameter on the launch URL. By default, the Player uses the HTTP protocol if no protocol is specified. You can change this to use HTTPS instead if you need to. Note that this is ignored if the LMS passes the protocol in the AICC_URL parameter.
To set the default protocol to HTTPS:
Note: As with the AiccAppletPath, you may want to edit config.xml in the Player publishing style if you always use HTTPS as the default protocol for your published content.