HTTP binding: whis is {http authentication scheme} an xs:string?

Section 6.12.2 Relationship to WSDL Component Model reads:

    {http authentication scheme} REQUIRED. xs:string to the Endpoint
    component, corresponding to the HTTP authentication scheme used.
    The valid values are "basic" for the "basic" authentication scheme
    defined in [IETF RFC 2617], "digest" for the Digest Access
    Authentication scheme as defined in [IETF RFC 2617], and "none"
    for no access authentication.

It would be better to have:

  A xs:token with one of the values basic, digest, or none.

and have this reflected in the schema.

-- 
Hugo Haas - W3C
mailto:hugo@w3.org - http://www.w3.org/People/Hugo/