Flex accessing https service of the same domain that swf is loaded

I am developing a flex application with flex 4.1 sdk and java backend (runs on Glassfish 3.1 via http). For security reasons I decided to move my authentication process to https until a session id is obtained. Therefore I changed the filter settings to use ssl for login and logout pages(just two pages due to performance reasons. The data-size sent to client is large and I do not want to slow down the system). Glassfish forwarded these pages to 8181 port (which is HTTPS por开发者_如何转开发t). Everything is ok for the java part. However flex defines the 8181 port as a different domain and then problems arise. Due to flash's same-origin policy it cannot load the secured content. Normally a crossdomain.xml is the solution but I am accessing content of the same domain through a different port. What will be the solution ?

Probably not the best solution but create a subdomain that maps to 8181 and put a crossdomain.xml that will allow access from root domain.