[Webkit-unassigned] [Bug 152490] New: WKWebView provides misleading info about applicationCache support

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=152490

            Bug ID: 152490
           Summary: WKWebView provides misleading info about
                    applicationCache support
    Classification: Unclassified
           Product: WebKit
           Version: Other
          Hardware: iOS
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: eugenebut at chromium.org

Created attachment 267760
  --> https://bugs.webkit.org/attachment.cgi?id=267760&action=review
Test App

Application cache is not supported by WKWebView, but window.applicationCache object exists, so web pages can not distinguish if applicationCache is not supported or it is not loaded yet.

Some web applications may rely on window.applicationCache presence to check if Application Cache is supported. That can lead to performance issues with WKWebView-based browsers. This bug does not affect Safari, which supports Application Cache.

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