The error message for Unauthorised actions is poorly formatted

[Rob Cresswell]

The error message from the REST API for attempting an unauthorised action gives:

{
  code: "401 Unauthorized"
  message: "This server could not verify that you are authorized to access
            the document you requested. Either you supplied the wrong
            credentials (e.g., bad password), or your browser does not
            understand how to supply the credentials required.<br /><br
            />↵↵↵"
  title:"Unauthorized"
}

This is wrong for several reasons:

1) "401 Unauthorized" is not an error code, its an error code converted to a string and with the error name/title appended.

2) The error message contains "<br /><br />↵↵↵".

3) This part is unlikely to be fixed, but the error itself is not embedded in an error object as with Keystone and Neutron, so the consistency issue means a generic solution can't be used.

[Cyril Roelandt (cyril-roelandt)]

How do you get this error? What steps should one follow in order to see this error message?

I cannot find any occurrences of "401 Unauthorized" in glance (see http://codesearch.openstack.org/?q=%22401%20Unauthorized%22&i=fosho&files=&repos=).