Re: 2 questions

Hi Glen, all

>I have 2 questions, if I may.
>1. What were the reasons for HTTP/2 not requiring TLS?
>Is there a significant performance consideration, is it related to the
>cost of certificates (which is now fairly low or even free), or are there
>other technical reasons?
>It would be nice if the web was just "secure by default", and I would
>have thought that now would be the right time to move in that direction.
>Also, at least 2 of the major browser vendors have said that they won't
>be supporting HTTP/2 without TLS, so surely no one is going to want to
>run their website without it?

There is a very interesting use case where TLS is an overhead related to
video streaming over HTTP/2. MPEG DASH provides DRM encryption for video
content. If you transfer DRM encrypted MPEG-DASH video over HTTP/2, you
will have double encryption, which is clearly an overkill. Generalizing,
when you need to use Digital Rights Management, there are no additional
benefits by encrypting again with TLS.

Best Regards,



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Received on Thursday, 9 April 2015 22:52:44 UTC