Not fully working, but saving progress

templates/hap_backend.tpl

@@ -0,0 +1,9 @@
+
+backend {{ name }}-backend
+
+    option forwardfor
+    http-request add-header X-CLIENT-IP %[src]
+    {% if ssl_enabled %} ttp-request set-header X-Forwarded-Proto https if \{ ssl_fc \} {% endif %}
+    {% for server in servers %}
+    server {{ server.name }} {{ server.address }}:{{ server.port }} {{ server.options }}
+    {% endfor %}