Feature Request: Support for srcset attribute in Static CDN Filters

[omriamos]

Hi,

ZenCache's Static CDN Filters works great within my site, beside one issue - I'm using the 'srcset' parameter in the tags in order to set a different image src for each screen size, and the filter changed only the first "src=" parameter but none of the "srcset=" parameters...

For example:
<img class="alignnone wp-image-86011" src="//cdn.hwzone.co.il/wp-content/uploads/2016/01/1-1.jpg?iv=1" alt="" width="1920" height="1157" srcset="//hwzone.co.il/wp-content/uploads/2016/01/1-1-300x181.jpg 300w, //hwzone.co.il/wp-content/uploads/2016/01/1-1-768x463.jpg 768w, //hwzone.co.il/wp-content/uploads/2016/01/1-1-1024x617.jpg 1024w, //hwzone.co.il/wp-content/uploads/2016/01/1-1-600x362.jpg 600w, //hwzone.co.il/wp-content/uploads/2016/01/1-1-696x420.jpg 696w, //hwzone.co.il/wp-content/uploads/2016/01/1-1-1068x644.jpg 1068w, //hwzone.co.il/wp-content/uploads/2016/01/1-1-697x420.jpg 697w, //hwzone.co.il/wp-content/uploads/2016/01/1-1.jpg 3882w" sizes="(max-width: 1920px) 100vw, 1920px">

Note how the "src=" has turned into the cdn subdomain, while the "srcset=" hasn't.

This is not a critical issue since obviously it still works - but nevertheless if there is a possible fix for this - it'll great :)

thanks

[raamdev]

@omriamos Thank you for the feature request. :-)

---

This article provides an overview of the how and why of the srcset attribute:

http://www.sitepoint.com/responsive-images-part-1-using-srcset/

And here's some official docs:

https://www.w3.org/html/wg/drafts/html/master/semantics.html#introduction-3:device-pixel-ratio-2

Note that this is for HTML 5.1 and the above link is to the W3C Working Draft 08 October 2015.

cc @jaswsinc

[jaswrks]

Also requested here. Referencing internal/private ticket.
https://websharks.zendesk.com/agent/tickets/13167