230970 2021-09-29 10:49:23 -0700 MediaSource SourceBuffer never fires any event beyond updatestart 2021-09-29 11:02:12 -0700 1 1 1 Unclassified WebKit Media WebKit Local Build Unspecified Unspecified NEW InRadar P2 Normal --- 1 gsnedders webkit-unassigned jer.noble webkit-bug-importer oldest_to_newest 1798446 0 439627 gsnedders 2021-09-29 10:49:23 -0700 Created attachment 439627 testcase (but needs file from WPT) Loading the attached test over HTTPS from the web-platform-test server/directory gives: Resource fetch success [object MediaSource]: sourceopen [object SourceBuffer]: updatestart This isn't an acceptable output, as far as I can tell; there should always be an updateend event (and either an update or error event between them). This is causing a fair few WPT tests to timeout in Safari, so this would be good to improve. 1798447 1 webkit-bug-importer 2021-09-29 10:49:33 -0700 <rdar://problem/83678497> 1798456 2 jer.noble 2021-09-29 11:02:12 -0700 This is (currently) expected behavior. The file in question is encrypted, and the parser is stalled waiting for the page to handle the generated "encrypted" event. I suspect that the stalling WPT tests in question are EME tests, and there is no EME test support for FairPlay encryption, which is the only CDM Cocoa-ports support. 439627 2021-09-29 10:49:23 -0700 2021-09-29 10:49:23 -0700 testcase (but needs file from WPT) test.html text/html 1470 gsnedders PCFkb2N0eXBlIGh0bWw+Cjx0aXRsZT5mb29wPC90aXRsZT4KPHByZSBpZD0ibG9nZWxlbWVudCI+ PC9wcmU+Cjx2aWRlbyBpZD0idmlkZW9lbGVtZW50Ij48L3ZpZGVvPgoKPHNjcmlwdD4KICAKICBm dW5jdGlvbiBsb2cocykgewogICAgICBsb2dlbGVtZW50LnRleHRDb250ZW50ICs9ICJcbiIgKyBz OwogICAgICByZXR1cm4gczsKICB9CgogIGZ1bmN0aW9uIGxvZ0V2ZW50KG9iamVjdCwgZXZlbnRU eXBlKSB7CiAgICAgIG9iamVjdC5hZGRFdmVudExpc3RlbmVyKGV2ZW50VHlwZSwgKGUpID0+IGxv ZyhlLnRhcmdldC50b1N0cmluZygpICsgIjogIiArIGUudHlwZSkpOwogIH0KICAKICAvLyBGZXRj aCB0aGUgbWVkaWEgcmVzb3VyY2VzCiAgZmV0Y2goIi9lbmNyeXB0ZWQtbWVkaWEvY29udGVudC92 aWRlb181MTJ4Mjg4X2gyNjQtMzYwa19lbmNfZGFzaGluaXQubXA0IikudGhlbihmdW5jdGlvbihy ZXNwb25zZSkgewogICAgICBpZiAoIXJlc3BvbnNlLm9rKSB0aHJvdyBuZXcgRXJyb3IobG9nKCdS ZXNvdXJjZSBmZXRjaCBmYWlsZWQnKSk7CiAgICAgIGxvZygiUmVzb3VyY2UgZmV0Y2ggc3VjY2Vz cyIpOwogICAgICByZXR1cm4gcmVzcG9uc2UuYXJyYXlCdWZmZXIoKTsKICB9KS50aGVuKGZ1bmN0 aW9uKHZpZGVvTWVkaWEpIHsKICAgICAgLy8gQ3JlYXRlIG1lZGlhIHNvdXJjZQogICAgICB2YXIg c291cmNlID0gbmV3IE1lZGlhU291cmNlKCk7CiAgICAgIGxvZ0V2ZW50KHNvdXJjZSwgInNvdXJj ZW9wZW4iKTsKICAgICAgbG9nRXZlbnQoc291cmNlLCAic291cmNlY2xvc2UiKTsKICAgICAgbG9n RXZlbnQoc291cmNlLCAic291cmNlZW5kZWQiKTsKICAgICAgICAgICAgICAgIAogICAgICAvLyBD cmVhdGUgYW5kIGZpbGwgc291cmNlIGJ1ZmZlcnMgd2hlbiB0aGUgbWVkaWEgc291cmNlIGlzIG9w ZW5lZAogICAgICBzb3VyY2UuYWRkRXZlbnRMaXN0ZW5lcignc291cmNlb3BlbicsIG9uU291cmNl T3Blbik7CiAgICAgIHZpZGVvZWxlbWVudC5zcmMgPSBVUkwuY3JlYXRlT2JqZWN0VVJMKHNvdXJj ZSk7CgogICAgICBmdW5jdGlvbiBvblNvdXJjZU9wZW4oZXZlbnQpIHsKICAgICAgICAgIHZhciB2 aWRlb1NvdXJjZUJ1ZmZlciA9IHNvdXJjZS5hZGRTb3VyY2VCdWZmZXIoInZpZGVvL21wNCIpOwoK ICAgICAgICAgIGxvZ0V2ZW50KHZpZGVvU291cmNlQnVmZmVyLCAidXBkYXRlc3RhcnQiKTsKICAg ICAgICAgIGxvZ0V2ZW50KHZpZGVvU291cmNlQnVmZmVyLCAidXBkYXRlIik7CiAgICAgICAgICBs b2dFdmVudCh2aWRlb1NvdXJjZUJ1ZmZlciwgInVwZGF0ZWVuZCIpOwogICAgICAgICAgbG9nRXZl bnQodmlkZW9Tb3VyY2VCdWZmZXIsICJlcnJvciIpOwogICAgICAgICAgbG9nRXZlbnQodmlkZW9T b3VyY2VCdWZmZXIsICJhYm9ydCIpOwogICAgICAgICAgdmlkZW9Tb3VyY2VCdWZmZXIuYXBwZW5k QnVmZmVyKHZpZGVvTWVkaWEpOwogICAgICB9CiAgfSk7Cgo8L3NjcmlwdD4K