http_openid:openid_current

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Predicate openid_current_url/2

openid_current_url(+Request, -URL) is det: Find the public URL for Request that we can make available to our identity provider. This must be an absolute URL where we can be contacted. Before trying a configured version through http_public_url/2, we try to see whether the login message contains a referrer parameter or whether the browser provided one.