add test c00013.vtc

src/tests/c00013.vtc

+varnishtest "Test parking second request on backend delay"
+
+server s1 {
+	rxreq
+	expect req.url == "/foo"
+	send "HTTP/1.0 200 OK\r\nConnection: close\r\n\r\n"
+	delay .2
+	sema r1 sync 2
+	delay .2
+	send "line1\n"
+	delay .2
+	sema r1 sync 2
+	send "line2\n"
+} -start
+
+varnish v1 -vcl {
+	import backend_dyn from "${vmod_topbuild}/src/.libs/libvmod_backend_dyn.so";
+
+	backend dummy { .host="${bad_ip}"; }
+
+	sub vcl_init {
+		if (!backend_dyn.create(name="be", host="${s1_addr}",
+		   		        	   port="${s1_port}")) {
+			return(fail);
+		}
+	}
+
+	sub vcl_backend_fetch {
+		set bereq.backend = backend_dyn.by_name("be");
+	}
+
+	sub vcl_backend_response {
+		set beresp.do_stream = false;
+	}
+} -start
+
+varnish v1 -cliok "param.set debug +syncvsl"
+
+client c1 {
+	txreq -url "/foo" -hdr "client: c1"
+	rxresp
+	expect resp.status == 200
+	expect resp.bodylen == 12
+	expect resp.http.x-varnish == "1001"
+} -start
+
+sema r1 sync 2
+
+client c2 {
+	txreq -url "/foo" -hdr "client: c2"
+	delay .2
+	sema r1 sync 2
+	rxresp
+	expect resp.status == 200
+	expect resp.bodylen == 12
+	expect resp.http.x-varnish == "1004 1002"
+} -run
+
+client c1 -wait
+
+varnish v1 -expect busy_sleep == 1
+varnish v1 -expect busy_wakeup == 1