1232812 - Implement the Save-Data header

Status: RESOLVED WONTFIX

(Core :: Networking, defect)

Description

[Kevin Brosnan [Ex-Mozilla]]

Chromium/Chrome are planning on shipping a new header to allow websites to know when to send the low bandwidth versions. 

https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/-_pEwnE_e_Y/zx5KFs3VBAAJ

Comment 1

[Kevin Brosnan [Ex-Mozilla]]

I filed this as unconfirmed as I would like the networking team to set to new if they plan on working on this.

Comment 2

[Patrick McManus [:mcmanus]]

in general I think we're more likely to go a client hints route.. if this has some standardization or sees traction on the net please reopen/open-new.. but for now let's wontfix and follow as necessary.

Comment 4

[JFSIII]

(In reply to Patrick McManus [:mcmanus] from comment #2)
> in general I think we're more likely to go a client hints route.. 
The proposal is to use a Client Hint http://httpwg.org/http-extensions/client-hints.html#save-data If this isn't what you meant, can you give more detail?

> if has some standardization or sees traction on the net please
> reopen/open-new.. but for now let's wontfix and follow as necessary.

I'm not sure what qualifies as traction but https://developers.google.com/web/updates/2016/02/save-data?hl=en#browser_support lists browser support as 

Chrome 49+
Opera 35+
Yandex 16.2+


which, according to http://caniuse.com/usage-table, makes it available on 
              Desktop  Mobile
Chrome 49+:    25.58%  26.57%
Opera 35+:      0.66%   0.02%
Yandex 16.2+:   0.21%   0.03%

I appreciate that this might not change the ticket's status, but can you more clearly define the criteria for revisiting or implementing?

Comment 5

[Patrick McManus [:mcmanus]]

I'm not ready to make a decision about google's client hints right now - but feel free to discuss in that bug. traction is going to require services too.

ch is 935216

Comment 6

[Emma Humphries ☕️🎸🧞‍♀️✨ (she/they) [:emceeaich] (Pacific Time) use needinfo]

Report from the field that South Asian and Brazilian users are sending the header with their requests. Should this be reopened?

Comment 7

[Dragana Damjanovic [:dragana]]

This depends on client-hints. Whether we are going to implement client-hints has not been decided yet.