Could you elaborate on how this would break the HTTP spec? I was under the (admittedly naive) impression that more or less any challenge-response authentication mechanism could be implemented in HTTP via the HTTP 401 error code. So presumably I would think that GSS context tokens could be exchanged through this mechanism. (E.g., client sends a request with an initial context token, server returns an HTTP 401 with a continuation token, client resends request with context completion token, and perhaps subsequent requests contain some context identifier)

This approach may not be standard, but a standard authentication mechanism could theoretically be proposed. I don't see how it breaks HTTP, but I'm not an HTTP expert.

Thanks,
Fred

On Jul 11, 2005, at 12:59 PM, Wyllys Ingersoll wrote:

Mutual authentication is not supported correctly because it is not possible
to do so without violating the HTTP spec.

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