Bug#859930: apt-transport-https: Add http/2 support
On Sun, Jun 04, 2017 at 11:18:53PM -0400, Tim Sattarov wrote:
> Hello
>
> I also think HTTP/2 could be useful in APT
>
> > I don't think there is anything to gain from HTTP/2 support
> > - we don't fetch small files, so all the multiplexing, binary
> > framing, and header compression is basically irrelevant.
>
> Here is my regular "apt update" output:
>
> ~# apt update
> [skip]
> Get:32 https://cloudfront.debian.net/debian experimental InRelease [107 kB]
> Get:33 https://cloudfront.debian.net/debian stretch/contrib
> Sources.diff/Index [27.8 kB]
> Get:34 https://cloudfront.debian.net/debian stretch/main
> Sources.diff/Index [27.9 kB]
> Get:35 https://cloudfront.debian.net/debian stretch/non-free
> Sources.diff/Index [27.8 kB]
> Get:36 https://cloudfront.debian.net/debian stretch/main amd64
> Packages.diff/Index [27.9 kB]
> Get:37 https://cloudfront.debian.net/debian stretch/main i386
> Packages.diff/Index [27.9 kB]
> [skip ~170 lines of similar sized files]
> Get:203 https://cloudfront.debian.net/debian unstable/contrib DEP-11
> 128x128 Icons [310
> kB]
>
> Fetched 56.1 MB in 45s (1,225 kB/s)
>
> I skipped about 170 lines of small, less than 50K files, they all could
> be downloaded in parallel, instead of sequential order.
> And I am downloading from HTTP/2 capable mirror (AWS CloudFront).
Our http method already supports pipelining, so requests are sent while
responses are pending, so all responses can be sent as fast as possible
by the server already. Note that while we could parallelize that too,
we chose to not run downloads from the same server in parallel by
principle.
I think the curl-based https method does not support pipelining, but
we will replace that with the http method.
Adding HTTP/2 support to the http method is a huge undertaking. I think
it might come eventually in a few years, but I don't see any real
motivation for that at the moment.
--
Debian Developer - deb.li/jak | jak-linux.org - free software dev
| Ubuntu Core Developer |
When replying, only quote what is necessary, and write each reply
directly below the part(s) it pertains to ('inline'). Thank you.
Reply to: