236213 2022-02-06 18:14:35 -0800 Video range requests are not cached 2022-02-10 16:57:04 -0800 1 1 1 Unclassified WebKit Media Safari 15 All Unspecified NEW InRadar P2 Normal --- 1 samuel.wemyss webkit-unassigned jer.noble webkit-bug-importer oldest_to_newest 1837973 0 451057 samuel.wemyss 2022-02-06 18:14:35 -0800 Created attachment 451057 Reduced testcase of the issue When videos are loaded using the HTMLVideoElement, the range requests are not cached if the video is reloaded or if a video with the same src is added. See the attached demo for an example. Chrome and Firefox will cache the video when video.load() is called and when another element is created referencing the same src. 1840056 1 webkit-bug-importer 2022-02-10 16:57:04 -0800 <rdar://problem/88787022> 451057 2022-02-06 18:14:35 -0800 2022-02-06 18:14:35 -0800 Reduced testcase of the issue report.html text/html 2632 samuel.wemyss PCFET0NUWVBFIGh0bWw+CjxodG1sIGxhbmc9ImVuIj4KPGhlYWQ+CiAgPG1ldGEgY2hhcnNldD0i VVRGLTgiPgogIDxtZXRhIGh0dHAtZXF1aXY9IlgtVUEtQ29tcGF0aWJsZSIgY29udGVudD0iSUU9 ZWRnZSI+CiAgPG1ldGEgbmFtZT0idmlld3BvcnQiIGNvbnRlbnQ9IndpZHRoPWRldmljZS13aWR0 aCwgaW5pdGlhbC1zY2FsZT0xLjAiPgogIDx0aXRsZT5Eb2N1bWVudDwvdGl0bGU+CjwvaGVhZD4K PGJvZHk+CiAgPGJ1dHRvbiBpZD0iZ28iPkFkZCBhIHZpZGVvICYgcGxheSBpdDwvYnV0dG9uPgog IDxwPgogICAgWW91IGNhbiBhbHNvIGNsaWNrIHZpZGVvcyB0byBsb2FkIHRoZW0gYWdhaW4gYW5k IHBsYXkuIE5vdGUgdGhhdCBpbiB0aGUgbmV0d29yayBpbnNwZWN0b3IgdGhhdCByYW5nZSByZXF1 ZXN0cyBmb3IgdGhlIHZpZGVvIGFyZSBub3QgY2FjaGVkLCByZWdhcmRsZXNzIG9mIHRoZQogICAg bWV0aG9kIG9yIHNyYyB1cmwuCiAgPC9wPgogIDxkaXYgaWQ9InZpZGVvcyI+PC9kaXY+CiAgPHNj cmlwdD4KICAgIGNvbnN0IGJ0biA9IGRvY3VtZW50LmdldEVsZW1lbnRCeUlkKCdnbycpOwogICAg Y29uc3QgdmlkZW9zID0gZG9jdW1lbnQuZ2V0RWxlbWVudEJ5SWQoJ3ZpZGVvcycpOwoKICAgIGZ1 bmN0aW9uIGNyZWF0ZVZpZGVvKHRpbWUpIHsKICAgICAgY29uc3QgdmlkZW8gPSBkb2N1bWVudC5j cmVhdGVFbGVtZW50KCd2aWRlbycpOwogICAgICAvLyB2aWRlby5zcmMgPSAndmlkZW8ubXA0JzsK ICAgICAgdmlkZW8uc3JjID0gJ2h0dHBzOi8vd3d3LmFwcGxlLmNvbS8xMDUvbWVkaWEvdXMvaXBo b25lL3N3aXRjaC8yMDIxLzYyNjI5NTZlLTJkOTQtNDE4OC1hMWY2LTI5ZmNmZTg0NWNmOC9hbmlt L2NoaXAvbWVkaXVtXzJ4Lm1wNCc7CiAgICAgIC8vIHZpZGVvLnNyYyA9ICdodHRwczovL3ZpZGVv LXB1YmxpYy5jYW52YS5jb20vVkFEYnlGOUpTLTAvdmlkZW9zL2QxOTAwMDE3ZjgubXA0JzsKICAg ICAgdmlkZW8ud2lkdGggPSAxNTA7CiAgICAgIHZpZGVvLmN1cnJlbnRUaW1lID0gdGltZTsKICAg ICAgdmlkZW8ucHJlbG9hZCA9ICdhdXRvJzsKICAgICAgdmlkZW8ubXV0ZWQgPSB0cnVlOwogICAg ICB2aWRlby5wbGF5c0lubGluZSA9IHRydWU7CiAgICAgIHZpZGVvLmN1cnJlbnRUaW1lID0gdGlt ZTsKICAgICAgdmlkZW8uYWRkRXZlbnRMaXN0ZW5lcignbG9hZGVkbWV0YWRhdGEnLCAoKSA9PiB7 CiAgICAgICAgLy8gV29ya2Fyb3VuZCB1bnRpbCBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93 X2J1Zy5jZ2k/aWQ9MjI5NjA1IGlzIG9uIGFsbCB2ZXJzaW9ucwogICAgICAgIHZpZGVvLmN1cnJl bnRUaW1lID0gdGltZTsKICAgICAgfSk7CiAgICAgIHZpZGVvLmFkZEV2ZW50TGlzdGVuZXIoJ2Nh bnBsYXl0aHJvdWdoJywgKCkgPT4gewogICAgICAgIHZpZGVvLnBsYXkoKTsKICAgICAgfSkKICAg ICAgdmlkZW8uYWRkRXZlbnRMaXN0ZW5lcigncG9pbnRlcmRvd24nLCAoKSA9PiB7CiAgICAgICAg Ly8gbG9hZCB0aGUgdmlkZW8gYW5kIHJlcGxheSBpdAogICAgICAgIHZpZGVvLmxvYWQoKTsKICAg ICAgfSkKCiAgICAgIHJldHVybiB2aWRlbwogICAgfQoKICAgIGxldCBwcmV2ID0gcGVyZm9ybWFu Y2Uubm93KCk7CiAgICBsZXQgc3RhcnRUaW1lID0gcHJldjsKCiAgICBmdW5jdGlvbiBkZWx0YVRp bWUoKSB7CiAgICAgIGNvbnN0IG5leHQgPSBwZXJmb3JtYW5jZS5ub3coKTsKICAgICAgY29uc3Qg ZGVsdGEgPSBuZXh0IC0gcHJldjsKICAgICAgcHJldiA9IG5leHQ7CiAgICAgIHJldHVybiB7IGRl bHRhLCBkZWx0YUZyb21TdGFydDogbmV4dCAtIHN0YXJ0VGltZSB9OwogICAgfQoKICAgIGxldCBp ZENvdW50ID0gMDsKICAgIGZ1bmN0aW9uIGFkZEV2ZW50TGlzdGVuZXJGb3IodmlkZW8gLCBldmVu dHMpIHsKICAgICAgY29uc3QgaWQgPSBpZENvdW50Kys7CiAgICAgIGZvciAoY29uc3QgZXZlbnQg b2YgZXZlbnRzKSB7CiAgICAgICAgdmlkZW8uYXJpYUxhYmVsID0gYCR7aWR9YDsKICAgICAgICB2 aWRlby5hZGRFdmVudExpc3RlbmVyKGV2ZW50LCAoKSA9PgogICAgICAgICAgY29uc29sZS5sb2co ewogICAgICAgICAgICBpZCwKICAgICAgICAgICAgZXZlbnQsCiAgICAgICAgICAgIHRpbWluZzog ZGVsdGFUaW1lKCksCiAgICAgICAgICAgIHZpZGVvVGltZTogdmlkZW8uY3VycmVudFRpbWUsCiAg ICAgICAgICB9KQogICAgICAgICk7CiAgICAgIH0KICAgIH0KCiAgICBidG4uYWRkRXZlbnRMaXN0 ZW5lcigncG9pbnRlcmRvd24nLCAoKSA9PiB7CiAgICAgIGNvbnN0IHZpZGVvID0gY3JlYXRlVmlk ZW8oMCk7CiAgICAgIHZpZGVvcy5hcHBlbmRDaGlsZCh2aWRlbyk7CiAgICAgIGNvbnN0IGV2ZW50 cyA9IFsKICAgICAgICAnY2FucGxheScsCiAgICAgICAgJ2NhbnBsYXl0aHJvdWdoJywKICAgICAg ICAnZHVyYXRpb25jaGFuZ2UnLAogICAgICAgICdwYXVzZScsCiAgICAgICAgJ3BsYXknLAogICAg ICAgICdwbGF5aW5nJywKICAgICAgICAnc3RhbGxlZCcsCiAgICAgICAgJ3N1c3BlbmQnLAogICAg ICAgICd0aW1ldXBkYXRlJywKICAgICAgICAnd2FpdGluZycsCiAgICAgIF07CiAgICAgIGFkZEV2 ZW50TGlzdGVuZXJGb3IodmlkZW8sIGV2ZW50cyk7CiAgICB9KTsKICA8L3NjcmlwdD4KPC9ib2R5 Pgo8L2h0bWw+Cg==