Hi there.
I've been playing with first_byte_timeout parameter.
Supposing the following script:
<?
sleep(10);
echo ('hi there');
And a simplified VCL like this:
backend test {
.host = "x.x.x.x";
.port = "80";
.first_byte_timeout = 1200ms;
}
sub vcl_recv {
set req.backend = test;
return(pass);
}
sub vcl_fetch {
esi;
}
When I request http://test/sleep.php after 1200 milli seconds Varnish
returns a 503, this is the expected behaviour.
But, when we have an html with esi code like this:
<html>
<body>
<esi:include src="/sleep.php"/>
</body>
</html>
When I request http://test/test.html, the 503 is thrown after 2400
milliseconds. As you can see is exactly double of first_byte_timeout.
If other esi:included is set, the elapsed time goes to 3600
milliseconds, and so on.
My question, is this the expected behaviour ????
Thanks in advance.
Kind Regards.
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