Re: [hybi] WebSocket Connection Failure Rates By Platform and Localhost or Other Destination

Adam Rice <ricea@chromium.org> Thu, 17 August 2017 10:20 UTC

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From: Adam Rice <ricea@chromium.org>
Date: Thu, 17 Aug 2017 19:20:14 +0900
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Subject: Re: [hybi] WebSocket Connection Failure Rates By Platform and Localhost or Other Destination
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Interesting idea, thank you.

WebSockets in Chrome only became directly blockable by extensions (ie. via
the webRequest API) in March.

Prior to that, they could only be blocked by injecting Javascript into the
page to replace the global WebSocket constructor, in which case our metrics
would never see the connection attempt (unless the ad blocker just rewrote
it to a different URL?).

I just checked, and the relative failure rates in February were very
similar to what they are today.

On 17 August 2017 at 18:33, Andy Green <andy@warmcat.com>; wrote:

>
>
> On 08/17/2017 04:17 PM, Adam Rice wrote:
>
>> I investigated the difference in success rates between WebSocket
>> connections on different platforms, as recorded by Chrome.
>>
>> I was able to show that most of the low success rate on Mac OS X could be
>> explained by attempted connections to localhost.
>>
>> There is still significant variation between platforms that is
>> unexplained.
>>
>> The document with the full results is at
>> https://docs.google.com/document/d/1S2y768C0hbI0etvSZWUoed5S
>> UdXAewRw3UpAKnuz0BE/edit
>>
>> Feedback and speculation as to the cause of the discrepancy is welcome.
>> I'm also interested if anyone has data from other sources they could share
>> for comparison.
>>
>
> How about [ad|u]block filters the attempted connection?
>
> Linux users have a high probability to use some kind of adblocking.
>
> Last time I looked chrome on Android wouldn't let me install such
> revenue-shrivelling addons.
>
> -Andy
>
>
>
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