Eric Covener wrote:
On Sat, Nov 28, 2009 at 7:23 PM, Carsten Wiedmann <carsten_st...@gmx.de> wrote:
André Warnier schrieb:
So how do you enumerate invalid hosts explicitly then ?
Right, it's a little bit curious, that you can't set 400 with mod_rewrite
(or header), only 403 (or 410).
In 2.2.x you can probably use [R=400]
My original post was more like a jest or a provocation, rather than a
real question.
But is is interesting to see how in the end, a document such as RFC2616
which is meant to "specify" a relatively strict set of rules, and of
which I am sure the phrasing is examined carefully and repeatedly (it
being after all a revision of an earlier document on the same topic),
still leaves areas open to interpretation, or downright inconsistent.
What is for example, in this case, a hostname which is /invalid/ on this
host ?
If the request reached this host, then it must be that for the DNS
system, the hostname resolved to one of this physical host's IP
addresses. In that sense, any HTTP request which reaches the host could
be deemed to address a valid hostname.
Yet the HTTP server listening on that host (and port), may be configured
to accept requests for several specific hostnames, but not the one
mentioned in the request. In that sense, Apache's defaulting to a
"default" host whose name does not match the request hostname would be
in contravention of the RFC. Yet by the same token, Apache's defaulting
to the default host and accepting the request, would seem to make the
request's hostname "valid", since the request is accepted.
So basically, the HTTP RFC obliges the server to send a 400 response for
an invalid host, but what is an invalid host is decided by the server.
Kind of circular as far as arguments go.
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