x/pkgsite: pkg.go.dev/net/http

[InfoLibre]

What is the URL of the page with the issue?

https://pkg.go.dev/net/http#DetectContentType

What is your user agent?

Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0

What did you do?

I used http.DetectContentType with this uploaded TIFF file (unzip it to test):

Document numérisé.tif.zip

buff, err := file.Open()
head := make([]byte, 512)
_, err = buff.Read(head)
contentType = http.DetectContentType(head)

What did you expect to see?

image/tiff

What did you see instead?

application/octet-stream (the MIME type of this file isn't recognized)

Could you add this MIME type to http.DetectContentType?

[ALTree]

As documented, DetectContentType follows https://mimesniff.spec.whatwg.org/, which does not define a TIFF signature.