Closed Bug 918752 Opened 7 years ago Closed 4 years ago
[XHR2] Default Accept: header more complex than */*
If no author-supplied Accept header is given, the default should be */* Test case: http://w3c-test.org/web-platform-tests/master/XMLHttpRequest/send-accept.htm
Here is a simple patch that overrides accept accordingly in Send(), if it has not been user-specified.
Attachment #8760829 - Flags: review?(jst)
Note that bug 433859 is a dupe of this one. It does mention the fetch API has the same requirement, but the fetch API's related test is passing already: http://w3c-test.org/fetch/api/basic/accept-header.html It might be worth changing that test so it also verifies that Accept can be overridden, as it only checks that */* is set by default (the same change might be worth adding to this XHR test). Also, the Fetch spec isn't as simple as just requiring */*, but requires specific UA strings for navigation requests and certain request content types (see https://fetch.spec.whatwg.org/#concept-fetch). It seems the test isn't checking those cases... perhaps it's outdated?
(That XHR test is already checking that Accept can be overridden, no? Master repo: https://github.com/w3c/web-platform-tests/blob/master/XMLHttpRequest/send-accept.htm )
Ah, indeed it is. Strange that I would have missed that; guess I didn't expect it to test for more than one thing at once.
Comment on attachment 8760829 [details] [diff] [review] 918752-set-accept-request-header-properly-if-not-user-set-for-xhrs.diff Review of attachment 8760829 [details] [diff] [review]: ----------------------------------------------------------------- Changing reviewers, just in case :jst is unavailable. Hopefully this isn't a faux pas...
Attachment #8760829 - Flags: review?(jst) → review?(jonas)
Here's a successful try run: https://treeherder.mozilla.org/#/jobs?repo=try&revision=ef87b0be88b2 The noted failures there are happening for me locally with or without this patch, so they should be unrelated.
Rebased the patch. Try seems fine: https://treeherder.mozilla.org/#/jobs?repo=try&revision=76c1042164ad There were no functional changes, just a minor update to a test I had missed, so I'm carrying over r+ and requesting check-in.
Attachment #8771717 - Attachment is obsolete: true
Pushed by email@example.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/00afd3c93ccf Override Accept request header to */* in XMLHttpRequest::Send() if it is not specified by the user. r=jst
Posted the site compatibility doc: https://www.fxsitecompat.com/en-CA/docs/2016/accept-header-for-xhr-has-been-simplified/
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