Connection-Allowlist: (response-origin "*://*:*/*\\?*&ignore-allowlist=true*")
Link: <http://{{hosts[][www]}}:{{ports[http][0]}}/connection-allowlist/tentative/resources/key-value-store.py?key=641530d4-9e7d-4760-91da-2a57191363c1&value=hello>; rel=prefetch