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Re: Discovery/Signaling via UDP Multicast

From: Eric Rescorla <ekr@rtfm.com>
Date: Sun, 4 Oct 2015 13:28:51 -0700
Message-ID: <CABcZeBOK6dacT7ujORAaafwfa50N54LByt0jVN-8CGf0YVD1WA@mail.gmail.com>
To: Philipp Hagemeister <phihag@phihag.de>
Cc: "public-webrtc@w3.org" <public-webrtc@w3.org>
On Sat, Oct 3, 2015 at 1:36 AM, Philipp Hagemeister <phihag@phihag.de>
wrote:

> I have an application that should allow sharing of data even if there is
> no Internet access at all (think sharing data in disaster conditions, or
> with repressive censorship), but the nodes are in a LAN (at least some
> of the time). At the moment, it seems like the practical signalling
> channels are:
>
> · a STUN server reachable by both endpoints, with a permanent & public name
> · a web server reachable by both endpoints, with a permanent & public name
> · User interaction, say entering the signalling information in a text
> box, or via QR code, or via sound->microphone
>
> Is there any reason why there is no additional channel for
> discovery/signalling via a simple UDP multicast protocol, whether custom
> or zeroconf/mDNS?
>

It's just not in scope for WebRTC. You want:
http://www.w3.org/TR/discovery-api/

-Ekr
Received on Sunday, 4 October 2015 20:29:59 UTC

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