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Hi David, On 7/20/15 6:06 AM, David Cake wrote:
As someone with moderate experience in both DNS and web server configuration, FWIW I found the meaning relatively obvious. The notion that HTTP Host headers might be used to change web server response independent of name resolution (e.g. that two names that return identical responses to every possible DNS query, but produce different web server responses) has been fairly intrinsic to how web servers operate for a couple of decades now, and this seems a simple but useful clarification regarding how this operates for .onion names to me. Yes, there is an HTTP Host header. Yes, responses vary by the *value* but not by the *structure*. As far as Apache is concerned, for instance, I would imagine it's doing a string compare without counting or considering dots. By discussing an arbitrary number of components, that paragraph implies that HTTP cares about the *structure* of the name, when it does not (although some implementations might kludge this with www.domain = domain). And I'll just hasten to add that now between you and Richard there are two interpretations of what the text in the document means. All I am suggesting is a bit of clarity, please. Eliot |
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