Bug 169420

Summary: XMLHttpRequest: request body dropped during redirects
Product: WebKit Reporter: Anne van Kesteren <annevk>
Component: DOMAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: achristensen, ahmad.saleem792, ap, beidson, bfulgham, cdumez, mike, rniwa, w0rse.t, webkit-bug-importer, youennf
Priority: P2 Keywords: InRadar
Version: Safari Technology Preview   
Hardware: Unspecified   
OS: Unspecified   

Description Anne van Kesteren 2017-03-09 10:10:52 PST
See https://github.com/w3c/web-platform-tests/pull/5070 (XMLHttpRequest/send-redirect-to-cors.htm in web-platform-tests) for tests.
Comment 1 Alexey Proskuryakov 2017-03-13 09:51:55 PDT
This may need some vetting. I believe that WebKit behavior for each specific HTTP redirect response code has been looked at in the past, and is intentional.
Comment 2 Andrey Povazhnyi 2017-12-15 03:00:46 PST
Interestingly, Fetch API call doesn't just drop request body, but sets it to "{}" after redirect
Comment 3 Ahmad Saleem 2022-08-10 03:28:35 PDT
Safari Technical Preview 150 still fail few tests:

https://wpt.fyi/results/xhr/send-redirect-to-cors.htm?label=master&label=experimental&aligned&view=subtest&q=send-redirect-to-cors

cdumez@apple.com - you fixed quite a lot XHR related bugs recently (updated TP not released yet)? Is this fixed in those? I couldn't find any commit mentioning this test, which was recently committed. Thanks!
Comment 4 Radar WebKit Bug Importer 2022-08-10 10:53:04 PDT
<rdar://problem/98459882>