title: haproxy match various conditions in use_backend
body: <p>I'm trying to match various conditions inside one backend, like this:</p>
  
  <pre><code>acl rule1 hdr_dom(host) -i ext1
  acl rule2 utl_beg /img
  default_backend back-server-http if rule1 and rule2
  </code></pre>
  
  <p>but, how can I put this "and" between the two rules?</p>