656251 - reduce verbosity of Accept header for fetching XSLT

Status: RESOLVED FIXED

(Core :: XSLT, defect)

Description

[Julian Reschke]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
Build Identifier: 

FF4 sends the following Accept header when fetching an XSLT referenced from an XML resource:

  text/xml,application/xml,application/xhtml+xml,*/*;q=0.1

Observations:

- doesn't list text/xsl (the "unofficial" media type)
- doesn't list application/xslt+xml (the official type, see https://bugzilla.mozilla.org/show_bug.cgi?id=655238)

Also, it has a fallback to */* anyway.

Proposal: cut this down to just "*/*".

Comparison with other UAs (see http://lists.w3.org/Archives/Public/www-archive/2011May/0013.html):


IE9: */*

Safari 5: text/xml, application/xml, application/xhtml+xml, text/xsl, 
application/rss+xml, application/atom+xml

Opera 11.10: text/html, application/xml;q=0.9, application/xhtml+xml, 
image/png, image/webp, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1

Chrome 12: text/xml, application/xml, application/xhtml+xml, text/xsl, 
application/rss+xml, application/atom+xml

(so most of the other UAs are equally weird, except IE9)

(Also note that in theory Accept isn't needed here at all, but there may be servers that rely on its presence)

Reproducible: Always

Comment 1

[Julian Reschke]

Updated comparison (see <http://lists.w3.org/Archives/Public/www-archive/2011Aug/0007.html>):

Firefox 5:

text/css -> Accept: text/css,*/*;q=0.1

text/xsl -> text/xml,application/xml,application/xhtml+xml,*/*;q=0.1

application/xslt+xml -> not supported


Firefox 7 ("aurora"):

text/css -> text/css,*/*;q=0.1

text/xsl -> 
text/xml,application/xml,application/xhtml+xml,application/xslt+xml,*/*;q=0.1

application/xslt+xml -> 
text/xml,application/xml,application/xhtml+xml,application/xslt+xml,*/*;q=0.1


IE9:

text/css -> text/css

text/xsl ->  */*

application/xslt+xml ->  */*


Safari 5.1:

text/css -> text/css,*/*;q=0.1

text/xsl -> text/xml, application/xml, application/xhtml+xml, text/xsl,

application/rss+xml, application/atom+xml
application/xslt+xml -> not supported


Opera 11.50:

text/css -> text/html, application/xml;q=0.9, application/xhtml+xml, 
image/png, image/webp, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1

text/xsl -> text/html, application/xml;q=0.9, application/xhtml+xml, 
image/png, image/webp, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1

application/xslt+xml -> not supported


Chrome 13:

text/css -> text/css,*/*;q=0.1

text/xsl -> text/xml, application/xml, application/xhtml+xml, text/xsl, 
application/rss+xml, application/atom+xml

application/xslt+xml -> not supported


Konqueror 4.6:

text/css -> text/css,*/*;q=0.1

text/xsl -> not supported

application/xslt+xml -> not supported

Comment 2

[Julian Reschke]

Attachment: shrink the accept header for XSLT

Comment 3

[Phil Ringnalda (:philor)]

http://hg.mozilla.org/integration/mozilla-inbound/rev/f1820278311e

Comment 4

[Matt Brubeck (:mbrubeck)]

http://hg.mozilla.org/mozilla-central/rev/f1820278311e

Comment 5

[Julian Reschke]

I don't believe this requires any developer-visible documentation.

Comment 6

[Eric Shepherd [:sheppy]]

Just for completeness's sake, I've listed this change on Firefox 9 for developers. The previous header was not documented, though, so this is the only documentation effect.