varnishtest "Check req.backend.healthy with UDS backends"

barrier b1 cond 2
barrier b2 cond 2
barrier b3 cond 2
barrier b4 cond 2

server s1 -listen "${tmpdir}/s1.sock" {
	rxreq
	barrier b1 sync
	expect req.url == "/"
	txresp -body "slash"
	accept
	rxreq
	barrier b2 sync
	barrier b3 sync
	expect req.url == "/"
	txresp -body "slash"
	accept
	barrier b4 sync
} -start

varnish v1 -vcl {

	import std;

	probe foo {
		.url = "/";
		.timeout = 1m;
		.interval = 1s;
		.window = 3;
		.threshold = 2;
		.initial = 0;
	}

	backend default {
		.path = "${s1_sock}";
		.max_connections = 1;
		.probe = foo;
	}

	sub vcl_recv {
		if (std.healthy(default)) {
			return(synth(200,"Backend healthy"));
		} else {
			return(synth(500,"Backend sick"));
		}
	}
} -start

varnish v1 -cliok "backend.list -p"

client c1 {
	txreq
	rxresp
	expect resp.status == 500
} -run

logexpect l1 -v v1 -g raw -q Backend_health {
	expect 0 0 Backend_health "default Still sick"
} -start

barrier b1 sync
barrier b2 sync

logexpect l1 -wait

client c2 {
	txreq
	rxresp
	expect resp.status == 500
} -run

logexpect l2 -v v1 -g raw -q Backend_health {
	expect 0 0 Backend_health "default Went healthy"
} -start

barrier b3 sync
barrier b4 sync

logexpect l2 -wait

client c3 {
	txreq
	rxresp
	expect resp.status == 200
} -run
