Setting grace from the backend

grace.vtc

varnishtest "Setting grace from the backend"
 
server s1 {
	rxreq
	txresp -hdr "Cache-Control: max-age=60, stale-while-revalidate=15"
} -start
 
varnish v1 -vcl+backend {
	sub vcl_backend_response {
		set beresp.http.X-ttl = beresp.ttl;
		set beresp.http.X-grace = beresp.grace;
	}
} -start
 
client c1 {
	txreq
	rxresp
	expect resp.status == 200
	expect resp.http.X-ttl == "60.000"
	expect resp.http.X-grace == "15.000"
} -run