RE: [saml-dev] Query regarding SAML 2.0 WEB SSO profile <AuthnRequest>

> But the HTTP Artifact binding uses <ArtifactResolve> (Artifact Resolution
> Protocol) and not <AuthnRequest> (Authentication Request Protocol).

The part that's called the "artifact binding" is not message-type-specific,
the artifact can be a stand in for any kind of request or response.

If you use it to send an AuthnRequest or any other message, the artifact is
turned into a message by the recipient using a separate protocol over a
separate binding, generally SOAP over HTTP.

Lastly, I very much doubt you want to do this. Using the artifact binding
for an AuthnRequest is highly unusual. Using it for the Response is more
typical.

-- Scott