[Webkit-unassigned] [Bug 228683] New: WebKitBlobResource error 1 exactly after 60 seconds when trying to read file input

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=228683

            Bug ID: 228683
           Summary: WebKitBlobResource error 1 exactly after 60 seconds
                    when trying to read file input
           Product: WebKit
           Version: Safari 14
          Hardware: iPhone / iPad
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dwynr at outlook.de

When trying to parse large files in chunks using FileReader for example, mobile safari seems to somehow revoke access to a file input after exactly 60 seconds. Expected behaviour would be that the file input stays available until changed by the user. This does not happen in desktop safari. Only on mobile.

JSFiddle to reproduce this behaviour on mobile safari (inputs file, waits 70 seconds and then attempts to read it): https://jsfiddle.net/rw8m1k29/

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