imported/w3c/web-platform-tests/XMLHttpRequest/send-entity-body-get-head-async.htm imported/w3c/web-platform-tests/XMLHttpRequest/send-entity-body-get-head.htm imported/w3c/web-platform-tests/XMLHttpRequest/send-redirect.htm imported/w3c/web-platform-tests/XMLHttpRequest/setrequestheader-content-type.htm I suspect this is a bug in CFNetwork, but haven't investigated much.