[PATCH] Normalizing the Host: header

[Nils Goroll]

Hi phk,

> But this is exactly the kind of needless text-processing we should avoid

In general: Absolutely, yes.

In this case, normalizing once should pay off wherever the host header needs to
be checked at least once.

> a regexp or a strncasecmp()

We don't have stncasecmp() in VCL at this point, so we need to compare
performance of pcre_exec() and strcmp().

Besides this, my main motivation for this suggestion was to avoid wrong host
header comparisons for all of those who have not spotted the right place in the
docs.

If this suggestion is not found useful, I think we should at least fix all the
wrong examples for host header comparison in the docs.

Thanks, Nils

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