On Thu, Sep 1, 2016 at 12:57 PM, Diane Hosfelt <dhosf...@mozilla.com> wrote:

> Right now, what I’m working on is updating some TLS statistics using
> https://github.com/mozilla/cipherscan <https://github.com/mozilla/
> cipherscan> (it’s taking a bit longer than I’d originally anticipated).
> Based on my current results (~50k sites), over 7% can only use TLS1 or
> lower. This means that, at a minimum, rustls would need need to implement
> TLS1 and 1.1 in addition to 1.2 (and eventually 1.3) in order for Servo to
> use it. I’m not quite sure what the bar should be for deciding that it’s
> okay to not support legacy protocols, but I definitely think that 7% is too
> high. In my opinion, web compatibility should be a goal of Servo.
>

FWIW, while I agree with that, I think it's important to get key
high-volume sites working well in Servo --- Facebook, GMail, Youtube,
Yahoo, Twitter, Amazon, etc --- before tackling the "long tail". I assume
the former do not require TLS < 1.2. That gives you plenty of time to add
TLS < 1.2 to rusttls.

One question I haven't seen asked or answered yet is whether the rusttls
maintainers would accept contributions to make it Web-compatible, and if
not, how one would maintain a Web-compatible version of it.

Rob
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