title: Haproxy acl rules is not working
body: <p>I trying to configure haproxy-1.7.3 with HTTP2 support next acl rules:</p>
  
  <pre><code>acl rule0 hdr_beg(host) -i i0.
  acl rule02 ssl_fc_alpn -i h2 and hdr_beg(host) -i i0.
  use_backend i02 if rule02
  use_backend i0 if rule0
  
  acl rule1 hdr_beg(host) -i i1.
  acl rule12 ssl_fc_alpn -i h2 and hdr_beg(host) -i i1.
  use_backend i12 if rule12
  use_backend i1 if rule1
  
  backend i0
      server node1 192.168.40.51:5000 ssl verify none
  
  backend i02
      mode tcp
      http-request add-header X-Forwarded-Proto https
      server node1 192.168.40.51:5001 check send-proxy
  
  backend i1
      server node1 192.168.40.23:5000 ssl verify none
  
  backend i12
      mode tcp
      http-request add-header X-Forwarded-Proto https
      server node1 192.168.40.23:5001 check send-proxy
  </code></pre>
  
  <p>I want all requests for subdomain i0. forward to i0.myserver.com and all requests for for subdomain i1. forward to i1.myserver.com with HTTP2 support. 
  But in my case all requests always forward to i0.myserver.com. What is wrong with this acl rules?</p>