RelyingPartyConfigurationManager creation failed: IllegalArgumentException: Host name may not be null

[Peter Schober]

* Farrukh Najmi <farrukh at wellfleetsoftware.com> [2013-05-17 17:40]:
> Attached is my SP metadata file. Note this file was generated by the
> spring-security-saml2-core codebase.

Jfyi, that file is empty: [text/xml, base64, us-ascii, 0K]

> What could be causing this problem? Is it because of localhost being
> used in the file instead of FQDN?

Without having encountered the error myself and without having seen
your metadata: No, "localhost" is a name and perfectly usable.
-peter