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Re: [rtcweb] draft-ibc-rtcweb-sip-websocket -- WebSocket Transport for Session Initiation Protocol (SIP)

Randell Jesup <randell-ietf@jesup.org> Thu, 15 September 2011 19:10 UTC

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Date: Thu, 15 Sep 2011 12:12:37 -0700
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Subject: Re: [rtcweb] draft-ibc-rtcweb-sip-websocket -- WebSocket Transport for Session Initiation Protocol (SIP)
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On 9/15/2011 11:57 AM, Roman Shpount wrote:
> Actually SIP over UDP is what is typically used for mobile apps now. 
> If you are doing SIP from the public IP, you do not need to maintain 
> the connection even if TCP/TLS is used.

Markus had a point: SIP over UDP requires keepalives if it's behind a 
NAT as well.  So maybe it's not such a big difference, depending on the 
keepalive rates needed (and for UDP circa 30 sec is typical).

-- 
Randell Jesup
randell-ietf@jesup.org

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