Re: [hybi] The future of WebSockets, and the WiSH proposal

Takeshi Yoshino <tyoshino@google.com> Thu, 27 April 2017 11:21 UTC

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From: Takeshi Yoshino <tyoshino@google.com>
Date: Thu, 27 Apr 2017 20:20:56 +0900
Message-ID: <CAH9hSJaM0nisAMYcbCY0WFm82tyQG+VUrtbSG-LFdTWwcbchOw@mail.gmail.com>
To: Anne van Kesteren <annevk@annevk.nl>
Cc: Andy Green <andy@warmcat.com>, "hybi@ietf.org" <hybi@ietf.org>
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Subject: Re: [hybi] The future of WebSockets, and the WiSH proposal
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Anne,

Regarding my thoughts about choosing web APIs to focus,

I understand that we have many APIs around for doing the similar thing. I'm
following your thoughts regarding e.g. that we've frozen XHR while evolving
only fetch(). But I'm thinking that it's worth improving the WS ecosystem
even while we're evolving fetch()/Streams considering risk, gain and
velocity as follows.

Risk
- WiSH doesn't require any change to the API surface.
- WS API can always fallback to use WS/1.0 protocol when WiSH capability is
not announced.

Gain
- As I quoted in the first mail, there are lots of WS users in the Web.
According to Chrome's stats, 3.7% of page views contain WebSocket
initiation [1]. I think it's been serving significant portion of web apps'
cloud communication.
- The top starred issue for AppEngine has been WS [2].

Velocity
- As it stays inside the standard HTTP semantics, it wouldn't require so
much logic in the browser as when we introduced WS. The same about
frameworks/intermediaries, etc.
- We definitely continue making HTTP web APIs better by evolving fetch(),
but it takes some time. WiSH + HTTP/2 might be able to give enough benefit
quickly with small investment

Though all of these depend on data/feedback from the community as Addy,
Loïc, Greg have already expressed, I think it's worth exploring.

[1] Please note that our adoption metrics (
https://www.chromestatus.com/metrics/feature/timeline/popularity/1149) is
showing a smaller value currently, but will be replaced to more accurate
one according to which it's 3.7%.
[2] https://issuetracker.google.com/savedsearches/559750