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Re: [rtcweb] Please require user consent for data channels

Iñaki Baz Castillo <ibc@aliax.net> Fri, 17 July 2015 23:48 UTC

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From: Iñaki Baz Castillo <ibc@aliax.net>
Date: Sat, 18 Jul 2015 01:47:47 +0200
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To: Martin Thomson <martin.thomson@gmail.com>
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Subject: Re: [rtcweb] Please require user consent for data channels
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2015-07-18 1:41 GMT+02:00 Martin Thomson <martin.thomson@gmail.com>:
>
> On Jul 17, 2015 4:35 PM, "Iñaki Baz Castillo" <ibc@aliax.net> wrote:
>> What I understand is that the browser should bind on 0.0.0.0 (or ::0)
>> and send the STUN/TURN request,
>
> That works most of the time, but it is a cheat. What Chrome and Firefox do -
> bind to reach local interface separately - is the only reliable way to do
> this. If you bind to 0.0.0.0, you can't handle multiple interfaces
> correctly, and that reduces the odds of completing ICE with the best result.

If you bind to 0.0.0.0 the OS will find out the proper interface to
send the STUN/TURN request. The browser should then check the chosen
source IP to match the associated local candidate.

>  If you bind to 0.0.0.0, you can't handle multiple interfaces
> correctly, and that reduces the odds of completing ICE with the best result.

Any real usecase in which that could be true? Why should the app
override the OS routing table?

-- 
Iñaki Baz Castillo
<ibc@aliax.net>

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