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Re: DataChannel.send() blocks for some milliseconds, how is it possible?

From: Harald Alvestrand <harald@alvestrand.no>
Date: Mon, 09 Jun 2014 20:53:40 +0200
Message-ID: <539602B4.9020407@alvestrand.no>
To: Iñaki Baz Castillo <ibc@aliax.net>, "public-webrtc@w3.org" <public-webrtc@w3.org>
On 06/09/2014 08:34 PM, Iñaki Baz Castillo wrote:
> Hi,
> I've realized, by measuring DataChannels performance in a JS
> application, that in certain circumstances (network conditions?)
> DataChannel.send() blocks for 1ms, 2ms or even 10ms. Tested in Chrome
> 35.
> This is obviously catastrophic for a JS application since it blocks
> the JS loop, and it is even worse given that existing periodic timers
> (window.setInterval) get their next tick delayed the number of
> milliseconds it took to DataChannel.send() to return.

Please file a Chrome bug, preferably with a script that reproduces the

> I assume this cannot be valid and thus it is an implementation bug. Am
> I right? or must I assume that send() may, not just fail, but also
> block the JS execution loop?
> Thanks a lot.

Surveillance is pervasive. Go Dark.
Received on Monday, 9 June 2014 18:54:15 UTC

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