239591 2022-04-20 23:25:34 -0700 REGRESSION (r281791): [iOS] WKWebView cannot load local .log file 2022-05-13 16:13:29 -0700 1 1 1 Unclassified WebKit Page Loading Safari 15 iPhone / iPad iOS 15 RESOLVED FIXED InRadar P2 Normal --- 229414 1 lilinfeng303 bfulgham achristensen beidson bfulgham darin ggaren smoley webkit-bug-importer oldest_to_newest 1863213 0 lilinfeng303 2022-04-20 23:25:34 -0700 On iOS 15.4, the following code loading a local .log file (works on iOS 15.2.1) stops working. ``` let url = Bundle.main.url(forResource: "ABC", withExtension: "log")! webView.loadFileURL(url, allowingReadAccessTo: url) ``` Some logs: ``` [Process] 0x7fa558809220 - [pageProxyID=6, webPageID=7, PID=81527] WebPageProxy::didFailProvisionalLoadForFrame: frameID=3, domain=WebKitErrorDomain, code=102, isMainFrame=1 ``` Error object in func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) ``` Error Domain=WebKitErrorDomain Code=102 "Frame load interrupted" UserInfo={_WKRecoveryAttempterErrorKey=<WKReloadFrameErrorRecoveryAttempter: 0x6000000a2120>, NSErrorFailingURLStringKey=LOG_FILE_PATH, NSErrorFailingURLKey=LOG_FILE_PATH, NSLocalizedDescription=Frame load interrupted} ``` 1865066 1 webkit-bug-importer 2022-04-27 23:26:13 -0700 <rdar://problem/92442408> 1865145 2 smoley 2022-04-28 08:23:31 -0700 Thanks for filing, can you please submit a sysdiagnose via http://feedbackassistant.apple.com/ and mention this report (Bug 239591)? When filing that report please capture a sysdiagnose immediately after the issue reproduces with the web view in the foreground. Additionally, please note the exact time (ex: 1/1/19 12:51PM) and URL so we can investigate further. Thanks again! macOS Sysdiagnose documentation: https://developer.apple.com/services-account/download?path=/OS_X/OS_X_Logs/sysdiagnose_Logging_Instructions.pdf 1865321 3 lilinfeng303 2022-04-28 19:11:48 -0700 (In reply to Smoley from comment #2) > Thanks for filing, can you please submit a sysdiagnose via > http://feedbackassistant.apple.com/ and mention this report (Bug 239591)? > > When filing that report please capture a sysdiagnose immediately after the > issue reproduces with the web view in the foreground. Additionally, please > note the exact time (ex: 1/1/19 12:51PM) and URL so we can investigate > further. Thanks again! > > macOS Sysdiagnose documentation: > https://developer.apple.com/services-account/download?path=/OS_X/OS_X_Logs/ > sysdiagnose_Logging_Instructions.pdf I've filed a feedback with FB10000223 and attached an Xcode project for reproducing and a sysdiag 1865428 4 smoley 2022-04-29 07:52:35 -0700 Thanks Levin I've added the attachments to the original report and will route accordingly. 1868235 5 bfulgham 2022-05-11 15:41:09 -0700 It looks like this regressed in the iOS-specific changes for Bug 229414. 1868236 6 bfulgham 2022-05-11 15:47:08 -0700 This use case was previously handled in the Quicklook code path (even though QL isn't actually needed for this). 1868239 7 459187 bfulgham 2022-05-11 16:03:26 -0700 Created attachment 459187 Patch 1868240 8 459187 ggaren 2022-05-11 16:15:38 -0700 Comment on attachment 459187 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=459187&action=review r=me Does something specifically prevent us from adding a regression test that loads a .log file? > Source/WebCore/platform/network/ios/WebCoreURLResponseIOS.mm:72 > + } else > #endif // USE(QUICK_LOOK) > + if (!type) > + CFURLResponseSetMIMEType(response, CFSTR("application/octet-stream")); > } Super-hard to read an else-if that spans an #ifdef. Can the previous block use an early return instead? 1868253 9 459187 bfulgham 2022-05-11 17:06:29 -0700 Comment on attachment 459187 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=459187&action=review > Source/WebCore/platform/network/ios/WebCoreURLResponseIOS.mm:-53 > - return; @Darin: It's surprising to me that our iOS code path only ever dealt with the amusingly-named 'mjs' file extension, while our macOS code deals with a myriad of things. Before your refactoring, we would fall through to the QuickLook case which seems like it would generally hand off to the equivalent of your new 'preferredMIMETypeForFileExtensionFromUTType' method, and return a valid MIME type. I wonder if we should just always check 'preferredMIMETypeForFileExtensionFromUTType' if we have a valid file URL, rather than depending on the main resource load + QuickLook case handling them. 1868254 10 bfulgham 2022-05-11 17:07:07 -0700 (In reply to Geoffrey Garen from comment #8) > Comment on attachment 459187 [details] > Patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=459187&action=review > > r=me > > Does something specifically prevent us from adding a regression test that > loads a .log file? > > > Source/WebCore/platform/network/ios/WebCoreURLResponseIOS.mm:72 > > + } else > > #endif // USE(QUICK_LOOK) > > + if (!type) > > + CFURLResponseSetMIMEType(response, CFSTR("application/octet-stream")); > > } > > Super-hard to read an else-if that spans an #ifdef. Can the previous block > use an early return instead? Oh, gosh -- yes. I should have done that instead. I'll fix before landing, though I'm going to wait until Darin has had a look since he may have other ideas for how to address this. 1868255 11 459187 darin 2022-05-11 17:17:22 -0700 Comment on attachment 459187 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=459187&action=review >> Source/WebCore/platform/network/ios/WebCoreURLResponseIOS.mm:-53 >> - return; > > @Darin: It's surprising to me that our iOS code path only ever dealt with the amusingly-named 'mjs' file extension, while our macOS code deals with a myriad of things. Before your refactoring, we would fall through to the QuickLook case which seems like it would generally hand off to the equivalent of your new 'preferredMIMETypeForFileExtensionFromUTType' method, and return a valid MIME type. > > I wonder if we should just always check 'preferredMIMETypeForFileExtensionFromUTType' if we have a valid file URL, rather than depending on the main resource load + QuickLook case handling them. I did make a mistake in my refactoring. I assumed that shouldUseQuickLookForMIMEType would return false if passed null for a MIME type, and clearly it returns true for that case. Oops! Your change looks fine. 1868524 12 459245 bfulgham 2022-05-12 13:22:49 -0700 Created attachment 459245 Patch for landing 1868537 13 ews-feeder 2022-05-12 13:59:31 -0700 Committed r294118 (250499@main): <https://commits.webkit.org/250499@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 459245. 1868634 14 lilinfeng303 2022-05-12 21:17:37 -0700 Thanks for the quick fix! Do you know in which iOS version will this fix be included? 1868853 15 darin 2022-05-13 13:50:13 -0700 Brent, please consider my comment: https://github.com/WebKit/WebKit/commit/5883fa195996d3faa26e6a8453505a1169548719#r73616271 Levin, Apple folks generally can’t announce which fixes go into which iOS versions. I understand how useful it would be for you to have that information! 1868878 16 bfulgham 2022-05-13 15:03:39 -0700 Reopening to add a follow-up fix. 1868879 17 459322 bfulgham 2022-05-13 15:03:45 -0700 Created attachment 459322 Patch for landing 1868906 18 ews-feeder 2022-05-13 16:13:26 -0700 Committed r294182 (250549@main): <https://commits.webkit.org/250549@main> All reviewed patches have been landed. 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