and very basic, but it should be ready for testing. Two strategies for load balancing
are implemented: a simple round robin, and a simple weighted random. The following
is an example configuration in vcl. The weight parameter for random is optional. Default
is equal weight.

backend foo {
	set backend.host = "foo.bar.com";
	set backend.port = "http";
}

backend_round_robin rr {
	set backend.set = {
		{ "foo1.bar.com", "http" }
		{ "foo2.bar.com", "http" }
		{ "foo3.bar.com", "http" }
	};
}

backend_random rrr {
	set backend.set = {
		{ "foo1.bar.com", "http", 0.3 }
		{ "foo2.bar.com", "http", 0.6 }
		{ "foo3.bar.com", "http", 0.1 }
	};
}

sub vcl_recv {
	if {req.http.host ~ "foo"} {
		req.backend = foo;
	} elseif {req.http.host ~ "bar"} {
		req.backend = rr;
	} else {
		req.backend = rrr;
	}
}




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a Host: header.


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in ticket #144.

Use per backend mutex, do refcounts right, protect the address structures
with a sequence number.

Should close #144.



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handling.

Add more asserts.


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unlucky multiple times in which case the responsibility falls back to
cnt_lookup().

Fixes 144.





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WikiText from a change log.


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add an explicit dependency so the logs are regenerated if the stylesheet
changes.


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DocBook, and that I don't have <filename>, <literal>, <varname> etc. -
just <code>.


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Move the VRT initializer for simple backends home.

Add a backend method to get hostname.  This may be a hack.

Move fields private to "simple" to its private structure.

Add cleanup method to backend, so we can collect the garbage.



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when a new VCL instantiates a backend.

Drop backends when their reference count goes to zero.



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For now all we have is a "simple" method, but we want more complex
methods later on, round-robin, least-busy and so on.

For now, fall into the other ditch and move everything to 
cache_backend_simple.c, we will move bits back as the gain generality.



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a couple of now pointless debugging messages in pipe mode.


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across unchanged, otherwise the semantics of the Connection: header cannot
be interpreted correctly by the server.

wget(1) could trigger this problem and would have to wait for the server
to close the (seemingly idle) connection before continuing.



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It's a fine point of C-linguistics, but I have to admit that in
certain universes it would have a point.  Not this one though.




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code that invokes it.

If fmtcheck(3) is available, we refuse pedal target practice.



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A svn trunk build needs automake, autoconf and libtool to build. A release tarball can remove these requirements.

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