[1] [CITE@en[Guidelines for Web Content Transformation Proxies 1.0]]
( ([TIME[2010-10-22 17:20:31 +09:00]] 版))
<http://www.w3.org/TR/2010/NOTE-ct-guidelines-20101026/#sec-types-of-proxy>

[FIG(quote)[
[FIGCAPTION[
[2] [CITE@en[Re: ''''''[''''''mixed-content'''''']'''''' DASH Players and Mixed Content]]
([[Ben Gidley]] 著, [TIME[2015-07-22 17:22:43 +09:00]] 版)
<https://lists.w3.org/Archives/Public/public-webappsec/2015Jul/0155.html>
]FIGCAPTION]

> 
> - Using HTTPS breaks downstream caching - this can be a big deal in some
> regions. Many ISP's have transparent HTTP proxies for video and using
> HLS/DASH with HTTP enables them to effectively extend the CDN into their
> networks for 'free' as far as the operator is concerned.

]FIG]