1070779 - Firefox requests single file multiple times in one page

Status: UNCONFIRMED

(Core :: Graphics: ImageLib, defect)

Description

[aneesiqbalbhatti]

Attachment: Screenshot from 2014-09-22 05:34:42.png

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36

Steps to reproduce:

I have multiple image sources that point to the same link, but have #{unique_slug} at the end. I am using the slug to show different images from one svg file. it's a css-sprites like trick in svgs. Only the svg element with the id you give is shown, all others are hidden.


Actual results:

It requests the same file more than 10 times in a single page load.


Expected results:

It should have loaded the file just one time and showed it in all places.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Imagelib needs to use the url-without-ref as the cache key or something, assuming we want this behavior.

I say assuming, because there is no spec I can see which has this as a requirement at the moment.  Probably needs a spec issue raised on HTML as well.

Comment 2

[aneesiqbalbhatti]

Bump

Comment 3

[Alice0775 White]

Could you provide a testcase or public URL to reproduce the problem?

Comment 4

[aneesiqbalbhatti]

If you visit [this][1] Pen URL in the latest Firefox, You'll see icons.svg being downloaded multiple times.

[1]:http://codepen.io/anon/pen/pvRybV

Comment 5

[Seth Fowler [:seth] [:s2h]]

Note that this is actually by design, to support the way that the -moz-resolution media fragment works. We are planning to rip that out very soon, probably in the Firefox 38 timeframe, and that will eliminate this issue as well.

Comment 6

[Seth Fowler [:seth] [:s2h]]

(In reply to Boris Zbarsky [:bz] from comment #1)
> Imagelib needs to use the url-without-ref as the cache key or something,
> assuming we want this behavior.
> 
> I say assuming, because there is no spec I can see which has this as a
> requirement at the moment.  Probably needs a spec issue raised on HTML as
> well.

We definitely do want this behavior, because otherwise using spatial media fragments (#xywh) for things like sprite sheets will be so inefficient that nobody will want to do it.