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Re: [presentation-api] possible charter for second screen cg - 2 UA communication

From: Louay Bassbouss via GitHub <sysbot+gh@w3.org>
Date: Thu, 12 Nov 2015 07:18:44 +0000
To: public-secondscreen@w3.org
Message-ID: <issue_comment.created-156021352-1447312719-sysbot+gh@w3.org>
@karim76 thx for your feedback I agree with you about your concern if 
devices are not in the same network and but there are cases where BLE 
makes sense. Example: Present on a Display as guest (Controller and 
display are not in the same network but both are connected to the 
internet). In this case BLE will help to discover the display and 
maybe exchange some signalling information and launch the 
presentation. for communication WebRTC can be used. This should be 
possible even if the devices are not in the same network. BLE can be 
used as signalling channel  e.g. to exchange WebRTC metadata (offer, 
answer, etc.). It is also possible to use WebSocket for the 
communication instead of WebRTC but this must be routed over a cloud 
server. In this case, during the BLE discovery the display sends its 
remote Endpoint and the controller connects to it. 
To makes things clear: my proposal was only to put BLE in the 
discussion but not necessary as main protocol for discovery. maybe as 
additional optional protocol if we see there are relevant use cases 
for it. most currently available presentation devices (mainly TVs and 
streaming devices) support IP based discovery protocols (mDNS/DNS-SD, 
SSDP) and we should consider them first. 

-- 
GitHub Notif of comment by louaybassbouss
See 
https://github.com/w3c/presentation-api/issues/220#issuecomment-156021352
Received on Thursday, 12 November 2015 07:18:47 UTC

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