Merge pull request 'Add hap_backend_websocket.tpl long-lived/websocket backend template' (#5) from add-websocket-backend-template into main

Reviewed-on: #5

templates/hap_backend_websocket.tpl

@@ -0,0 +1,34 @@
+# Long-lived / websocket-safe backend for {{ name }} (template_override)
+# For apps with persistent WebSocket/streaming connections (e.g. Jitsi /xmpp-websocket, /colibri-ws).
+backend {{ name }}-backend
+    no option http-server-close
+    option http-no-delay
+    timeout server 6h
+    timeout tunnel 6h
+    timeout http-keep-alive 6h
+    option forwardfor
+    http-request add-header X-CLIENT-IP %[var(txn.real_ip)]
+    http-request set-header X-Real-IP %[var(txn.real_ip)]
+    http-request set-header X-Forwarded-For %[var(txn.real_ip)]
+    http-request set-header X-Forwarded-Proto https if { ssl_fc }
+    http-request set-header X-Forwarded-Proto http if !{ ssl_fc }
+    {% for server in servers %}
+    server {{ server.server_name }} {{ server.server_address }}:{{ server.server_port }} {{ server.server_options }} resolvers docker_dns init-addr last,libc,none
+    {% endfor %}
+
+# SSE variant (Accept: text/event-stream / ?action=stream auto-routes here)
+backend {{ name }}-sse-backend
+    no option http-server-close
+    option http-no-delay
+    timeout server 6h
+    timeout tunnel 6h
+    timeout http-keep-alive 6h
+    option forwardfor
+    http-request add-header X-CLIENT-IP %[var(txn.real_ip)]
+    http-request set-header X-Real-IP %[var(txn.real_ip)]
+    http-request set-header X-Forwarded-For %[var(txn.real_ip)]
+    http-request set-header X-Forwarded-Proto https if { ssl_fc }
+    http-request set-header X-Forwarded-Proto http if !{ ssl_fc }
+    {% for server in servers %}
+    server {{ server.server_name }} {{ server.server_address }}:{{ server.server_port }} {{ server.server_options }} resolvers docker_dns init-addr last,libc,none
+    {% endfor %}