VBE_CheckFd(): Check that a filedescriptor is reusable.

Right now we simply poll it with a zero timeout, and if there are
any events, we can't reuse it.

This check may need refinement down the road.

One option would be to attempt to write a CRNL onto the fd and see
that it works.



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combination.  This will be necessary in most if not all backend methods,
so it should be generic.



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This is not optimal, but a better compromise than the alternative.

DNS names are case insensitive, but URLs are not.

However, URLs are very often filenames and having files which differ
only in case is already asking for trouble.



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* Close list in varnishreplay.1
* Remove macro after Cm, as this cancelled the effect of Cm


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* Add magic tag in varnish.postinst for debhelper
* Remove old overrides, add two overrides for update-rc.d


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Fixes #132

Many thanks to Janis Putrams for debugging this.



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The health checks work the same as for a general backend. The worse the health of
an individual server within a balanced backend, the less likely it will be to get new
connections.



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* Removed -n switch from varnish defaults file and varnishlog init script.
  Use the default instance name instead.  This makes sure varnish utilities work
  without having to use the -n switch for the default instance.



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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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