Based on Theo Schlossnagle's Solaris portability patch.


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req.request is "HEAD".  This is what broke the RePurge test case.

Ideally, sp->wantbody would be controllable by VCL.


git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1780 d4fa192b-c00b-0410-8231-f00ffab90ce4

Made it possible to pass a vcl variable to error (error 200 backend.health).
Implemented a first attempt at an algorithm for checking the health of a backend. 
Negative values means the backend has problems, positive values means it is ok. 0 is neutral,
and could mean that it has been a while since the backend was asked for anything.
See the code for details.



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sub vcl_recv {
	if (req.request == "REPURGE") {
		purge(req.url);
		error 404 "Purged";
	}
}



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to an unsigned int (which triggered warnings on some 64-bit platforms) and
printed with %08lx, incorrectly assume that it can be meaningfully cast to
a void * and printed with %p.  While still incorrect in general terms, the
latter turns out to be correct on the specific systems that we care about.


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headers.  This fixes #128.


git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1751 d4fa192b-c00b-0410-8231-f00ffab90ce4

assumption about which is the default.


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one stevedore to the next.  The LRU code is invoked as soon as any of the
stevedores fills up.

This algorithm is far from ideal, and will not work well with differently
sized stevedores, but it has the advantage of being simple and lock-free.


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locking, which introduces a choke point.


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Support for multiple cache files. The selecting of a cache file is done by a simple round-robin that selects
the first file in the list, and then moves it to the end. If the selected file hasn't got enough space, the next
one is tried. If no file has enough space, the LRU discarding is applied to the first file in the list.


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Also, ignore the result of dlclose().


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glibtool, and has a version of automake 1.6 which does not exhibit the
bug I've observed on other platforms.


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tentative definitions with non-tentative ones, thus sidestepping one
of the issues we have on MacOS X.


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scenario where multiple clients each require different objects such that
the sum of the sizes of the objects is larger than the cache (or, in the
extreme case, one client requests an object which is larger than the
cache) causing STV_alloc() to enter an infinite loop.

This is not ideal - a better solution would be return NULL and have the
caller deal with the problem, possibly by returning a 503 result, or by
stalling the request for some time.


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