W3C home > Mailing lists > Public > public-webrtc@w3.org > June 2012

Re: Keeping up data channel

From: Stefan Hakansson LK <stefan.lk.hakansson@ericsson.com>
Date: Tue, 12 Jun 2012 22:15:18 +0200
Message-ID: <4FD7A356.2010406@ericsson.com>
To: public-webrtc@w3.org
On 06/12/2012 07:36 AM, Harald Alvestrand wrote:
> On 06/11/2012 03:58 PM, Markus.Isomaki@nokia.com wrote:
>> Hi,
>>
>> In today's WebRTC meeting a discussion came up on how costly it is
>> to keep an unused data channel connected.
>>
>> As long as we are using UDP, it is extremely costly for cellular
>> connected mobile devices. In many networks keep-alives at least
>> every 30 seconds are neeed to keep the UDP flow alive.
> We also have to send something every 30 seconds to keep the
> consent-to-receive alive in the case of media (and to maintain NAT
> mappings). So as long as a PeerConnection remains unclosed, I think
> we should assume that a packet will be sent every 30 seconds.

I agree, and I also think this is more of a PeerConnection than a data 
channel issue.

I think we need to make developers close the PeerConnection when it is 
not needed. A way to promote this would of course be to make 
PeerConnection set up fast.
Received on Tuesday, 12 June 2012 20:15:44 UTC

This archive was generated by hypermail 2.3.1 : Monday, 23 October 2017 15:19:28 UTC