Yup, I believe the ticket for that is
https://phabricator.wikimedia.org/T153897


On 22.12.2016 21:53, Ruben Verborgh wrote:
> Hi Stas,
>
> I found an important problem with the current configuration,
> that is likely a major factor in the performance loss we see.
>
> I noticed that https://query.wikidata.org/bigdata/ldf is served
> on HTTPS, and even with HTTP/2.
> However, the hypermedia controls inside of the message
> direcs the server to the HTTP version of the URL:
>
>     $ curl -s -H "Accept: text/turtle" https://query.wikidata.org/bigdata/ldf 
> | grep '?subject'
>                                
> http://query.wikidata.org/bigdata/ldf{?subject,predicate,object}";
>
> This means that, for every request, the browser has to perform 2 requests:
> 1. the request to http://query.wikidata.org/bigdata/ldf?…, which will 
> redirect to the https:// version
> 2. the request to https://query.wikidata.org/bigdata/ldf?…
> So this gives us all of the drawbacks of HTTP 1.1 and none of the advantages 
> of HTTP/2 :-)
>
> Could you please set
>     "baseURL": "https://query.wikidata.org/bigdata/";
> and verify that this gives indeed
>      https://query.wikidata.org/bigdata/ldf{?subject,predicate,object}";
> in the resulting pages?
>
> Best,
>
> Ruben
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