Bug 282427 – Service Worker can't correctly redirect relative URLs

• Component: Service Workers
• Status: RESOLVED FIXED

[Bero]

Created attachment 473100 [details]
Error in the network request

When I use a Service Worker for 300 redirects it works well when the Location header is set to an absolute URL like http://localhost/redirect.html, but the request returns an error when I set the location header to a relative URL like /redirect.html.

Relative URL redirects work in both Firefox and Chrome, just not in Safari.

If a relative URL location header is returned by a server like Apache the redirect will work. This is why I assume the issue is specifically related to Service Workers. 

Here is a repository with a minimal example of the issue https://github.com/bgrgicak/service-worker-redirect-test and testing instruction.

[Radar WebKit Bug Importer]

<rdar://problem/139498279>

[youenn fablet]

One temporary workaround is to use Response.redirect instead. This will autocomplete the URL in the location header.

[Bero]

(In reply to youenn fablet from comment #2)
> One temporary workaround is to use Response.redirect instead. This will
> autocomplete the URL in the location header.

Thank you! I can confirm the workaround works.

[EWS]

Committed 286470@main (8aeae6caf539): <https://commits.webkit.org/286470@main>

Reviewed commits have been landed. Closing PR #36386 and removing active labels.