Ajax / jQuery：同源政策

I want to know the below pairs consider http://en.wikipedia.org/wiki/Same_origin_policy?

https://myserver.com/ <--> https://myserver.com:443/

Is it considered a cross domain?

My problem occurrs when client-side jQuery.ajax request to https://myserver.com/one.action

Then server-side one.action response 302 with a http header Location redirect to https://myserver.com:443/two.action

I am using jQuery 1.3.2 while MSIE6.0 treats these pairs save but Firefox dropped my connection, client-side jQuery.ajax just respond me with status = 0 and textStatus = error:

• Firefox does not request to two.action, error instead.
• MSIE could complete the response from two.action and finish the success callback.

Is it because the originating location was https://myserver.com/ but not https://myserver.com:433/? Firefox problem?

Internet Explorer 6.0 is not praised for its security features. While the same protocol and same port should be considered the same origin, Firefox may simply decide to err on the side of safety and not trust it.