Useless MIME type served for rss feeds

[singpolyma]

Both /feed/, /feed/rss2/, and /feed/rss/ are served using the very undescriptive and generally useless "text/xml" MIME type. ATOM and RDF feeds are served with their proper MIME types. It looks like the MIME types for RSS are in feed.php, but for some reason there is a special "rss-http" type that returns the useless type? Changing the first line in feed-rss.php and feed-rss2.php to use the rss and rss2 type instead of rss-http fixed it on my site.

[singpolyma]

Patch I've used to fix this

[iridox]

Can we get this added to the queue for 3.5 please?

[SergeyBiryukov]

Related: [11358], #9810

[SergeyBiryukov]

Need to check if the ​wp-testers report and ticket:9810:5 still apply.

[chriscct7]

Refreshed patch and added the rss2 header to the comments rss2 feed

[SergeyBiryukov]

The patch essentially reverts [11334] and [11358].

Still need to make sure this does not reintroduce any issues mentioned in #9810 or in the ​wp-testers report.

[chriscct7]

This works for the couple of people on a Mac who've helped test it for me at LoopConf.

Apple actually serves their own feeds using application/rss+xml ​http://ax.itunes.apple.com/WebObjects/MZStore.woa/wpa/MRSS/justadded/limit=10/rss.xml

The previously mentioned download behavior in FireFox was actually a bug they fixed: ​https://bugzilla.mozilla.org/show_bug.cgi?id=256379

[wonderboymusic]

Firefox works fine with both.
Chrome parses the old feeds with an XML parser, parses them as plain text with patch
Safari doesn't parse in either version but suggests downloading a feed reader

[wonderboymusic]

In 32468:

Serve RSS feeds with the proper mime-type: application/rss+xml. The reason for hacking around browsers by using text/xml appears to no longer be relevant.

Props @chriscct7.
Reverts [11334] and [11358]
Fixes #15110.

[johnbillion]

In 36230:

Feeds: Remove the rss-http feed type, unused since r32468.

See #15110

[johnbillion]

Follow-up: #36620