Add 29.5: Profiling Web Pages

.symfony/config.vcl

@@ -1,3 +1,11 @@
+acl profile {
+   # Authorize the local IP address (replace with the IP found above)
+   "a.b.c.d";
+   # Authorize Blackfire servers
+   "46.51.168.2";
+   "54.75.240.245";
+}
+
 sub vcl_recv {
     set req.backend_hint = application.backend();
     set req.http.Surrogate-Capability = "abc=ESI/1.0";
@@ -8,6 +16,16 @@ sub vcl_recv {
         }
         return (purge);
     }
+
+    # Don't profile ESI requests
+    if (req.esi_level > 0) {
+        unset req.http.X-Blackfire-Query;
+    }
+
+    # Bypass Varnish when the profile request comes from a known IP
+    if (req.http.X-Blackfire-Query && client.ip ~ profile) {
+        return (pass);
+    }
 }
 
 sub vcl_backend_response {