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connect to, but a connection to a backend, this makes it possible
for the directors to choose another backend, if connection to the
first backend fails.



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we actually need to get a filedescriptor to the backend.

This also makes it evident for vcl_pass{}, vcl_pipe{} and vcl_miss{}
if the client sent a Host: header or not.  Previously these functions
saw the default Host: header.



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IANA has reserved the 198.18.0.0/24 network for Network Interconnect Device
Benchmark Testing which vaguely fits what we are doing.  Use that
instead of 127.0.0.2 since the latter works fine to bind to on Linux
(at least).


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When testing synthetic error page caching, make sure we connect to
:9080 rather than the default :80 since the machine might well have an
httpd running already.


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Don't look for umem on FreeBSD, which have dummy stub version for
dtrace or ZFS compatibility.

Generally restrict probes for Solaris specific stuff to when we
run on solaris, no need to make configure slower than it is.

Don't pretend we can get anywhere without poll(2) we use it for
lots of things:  Remove #if conditionals around poll-acceptor.

Sort a couple of lists, before they get too unsorted.

Submitted by:	Theo Schlossnagle



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really check anything yet, because we lack the stats counters to test.



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with its header around.

Found and nailed by:	Adrian Otto <aotto@mosso.com>



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traffic fares.  Problems seen there could be caused by all sorts
of special circumstances (bad PHP, weird headers from client etc)
and is not indicative of the backends health.



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probe requests.



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paramters.

Log each polls result in the SHMlog



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.window is how many of the latest polls we examine.
.threshold is how many must have succeeded for the backend to be healthy.

	.window = 40;
	.threshold = 30;
		// Thirty of the last fourty polls must have succeed.

	.threshold = 4;
		// The last four polls must have succeeded.

Default values:
	.window = 8;
	.threshold = 3;



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When an -expect fails in varnishtest, loop for up to a second since stats sometimes takes a little while to update


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that to make sense.

We do not need a mutex for our list, all manipulation is from CLI thread.



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- default.vcl has moved
- Added groff to build requirements



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behaviour.

Submitted by:	 sky (ticket 267)



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