[Webkit-unassigned] [Bug 256698] New: ServiceWorker downloads fail when chunks are sent via postMessage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=256698

            Bug ID: 256698
           Summary: ServiceWorker downloads fail when chunks are sent via
                    postMessage
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: iOS 16
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Service Workers
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mrskman at gmail.com

Steps to reproduce:
1) Go to https://stat-info.cz/safari-sw-download-tests.html
2) Start download using Test #3 (4 GiB at least)

It looks like the ServiceWorker thread is killed usually after downloading 1-2 GiB. This doesn't happen when chunks are downloaded inside the ServiceWorker thread (tests #1 and #2).

Reproduced on iOS 16.4.1 (iPhone XS).
Working fine on macOS 13.3.1 in Safari 16.4.

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