IDP SP communication

[Arnal, Pascal]

Hi,

I have one new problem in my configuration.
My understanding of Shibboleth (SP v2 and IDP v3) flow :
1 - The Web Browser call the SP for one resource
2 - The SP redirect the Browser via HTTP 302 to the IDP for authentication
3 - The user fill his credentials and submit the form to the IDP
4 - The IDP return one HTTP POST form with automatic submit on load via Javascript

My problem is, if the browser doesn't permit Javascript, there is one "ugly" web page
with one button that submit the form.
Is-there another meaning for the IDP to "talk" to the SP (may be one another HTTP 302, ...)?

Thanks

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