Get YKeys from Origin server

varnishtest "Get YKeys from Origin server"

server s1 {
        rxreq
        txresp -hdr "ykey: BOB TOM"
} -start

varnish v1 -vcl+backend {
        import ykey;

        sub vcl_backend_response {
                ykey.add_header(beresp.http.ykey, sep=" ");
                ykey.add_key("all");
                set beresp.ttl = 2m;
        }

        sub vcl_deliver {
                if (req.http.DEBUG == "true") {
                        # we can only expose ykey set by the origin server
                        # by default Varnish will copy the beresp contenxt into the resp context
                        # hence what in backend_resp is 'beresp.http.ykey' now it becomes
                        # 'resp.http.ykey'
                        set resp.http.debug-ykey = resp.http.ykey;
                }
        }
} -start

client c1 {
        txreq -hdr "DEBUG: true"
        rxresp
        expect resp.http.ykey == "BOB TOM"
} -run