How can i pass additional attributes in a SAML authentication request from SP to IdP using Shibboleth?

[Peter Schober]

* Kilian Ries <mail at kilian-ries.de> [2012-05-09 10:55]:
> void SHIBSP_DLLLOCAL clearHeaders(SPRequest& request) {
[...]
> Is this the code, where the SP builds the authnRequest?

I would say clearHeaders() does just this, clear headers.

> Is there anything else which i'll have to pay attention to?

The IdP will need to be changed as well, to be able do anything with
those extensions in the authnRequest,
-peter