whatwg / whatwg/fetch

Location header is the empty string

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#669 7 comments 0 reactions 0 assignees View on GitHub

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topic: http topic: redirects
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HTML
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Description

I'm trying to figure out what happens when you do a fetch() in follow mode, and get a 302 response with a Location header whose value is the empty string.

Chrome returns a response with type 'basic', status 302, and a Location header with the empty string. (It also crashes in debug mode.) Firefox returns a network error.

For a similar test where Location is omitted, Chrome returns a response with type 'basic', status 302, and no Location header. Firefox returns the same.

What does the spec say and people think? Here is my proposed WPT test for reference:
https://chromium-review.googlesource.com/c/chromium/src/+/910753

@wanderview

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Research direction

Start by reading the Fetch Standard's redirect and Location-header processing, then compare its treatment of an empty value with the Chrome and Firefox behavior described here. Review the proposed WPT test at chromium-review.googlesource.com/c/chromium/src/+/910753; done means the expected behavior is clarified and the test or specification direction is agreed.

Written by the indexing model from the issue text.

Assessment

Domain
api, web-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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