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http.headers.Trailer - Not meaningfully supported in Chrome #18441
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I can confirm this. It seems on Chrome it ignores even Server-Timings from Trailers: https://issues.chromium.org/issues/40811358 See also Fyrd/caniuse#6159 and Fyrd/caniuse#2482. |
Thanks for raising this. This should be resolved in the linked PR now, so I'm closing as done. See also: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Trailer#browser_compatibility |
Thanks. But on mdn it still says: "This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015." But when you look at data below, this is not really true? So I think the top message seems misleading? |
@mitar are you referring to the Baseline banner? This takes some time to be updated / recalculated following BCD updates, so it's no longer showing on this page. Could you check again to confirm? |
True. It is not there anymore. Thanks. |
What type of issue is this?
Incorrect support data (ex. Chrome says "86" but support was added in "40")
What information was incorrect, unhelpful, or incomplete?
The page about the HTTP Header "Trailer" says that it is supported in Chrome. This is misleading; it is only supported to the extent that it is harmlessly ignored.
What browsers does this problem apply to, if applicable?
Chromium (Chrome, Edge 79+, Opera, Samsung Internet)
What did you expect to see?
Not supported in Chrome.
Did you test this? If so, how?
Verified by looking at the source code.
Can you link to any release notes, bugs, pull requests, or MDN pages related to this?
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Trailer
Do you have anything more you want to share?
No response
MDN URL
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Trailer
MDN metadata
MDN page report details
http.headers.Trailer
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