Re: [pntaw] Real-time media over TCP

"Parthasarathi R" <partha@parthasarathi.co.in> Wed, 09 October 2013 17:02 UTC

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From: "Parthasarathi R" <partha@parthasarathi.co.in>
To: "'Simon Perreault'" <simon.perreault@viagenie.ca>, <pntaw@ietf.org>
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Subject: Re: [pntaw] Real-time media over TCP
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Hi Simon,

I have seen only two requirements in
draft-ietf-rtcweb-use-cases-and-requirements-11, NAT/FW that blocks UDP and
FW that only allows http. The relevant draft snippet is attached as a note
of this mail. I'm discussing about NAT/FW that blocks UDP requirement. In
case you foresee that the requirement is not detailed now, we need to sort
out the requirement first before discussion the solutions.

Regards
Partha

PS: In draft-ietf-rtcweb-use-cases-and-requirements-11 snippet,

3.2.2.  Simple Video Communication Service, NAT/FW that blocks UDP

3.2.2.1.  Description

   This use-case is almost identical to the Simple Video Communication
   Service use-case (Section 3.2.1).  The difference is that one of the
   users is behind a NAT that blocks UDP traffic.

3.2.3.  Simple Video Communication Service, FW that only allows http

3.2.3.1.  Description

   This use-case is almost identical to the Simple Video Communication
   Service use-case (Section 3.2.1).  The difference is that one of the
   users is behind a FW that only allows http traffic.

> -----Original Message-----
> From: pntaw-bounces@ietf.org [mailto:pntaw-bounces@ietf.org] On Behalf
> Of Simon Perreault
> Sent: Tuesday, October 08, 2013 11:55 PM
> To: pntaw@ietf.org
> Subject: Re: [pntaw] Real-time media over TCP
> 
> Le 2013-10-08 19:52, Parthasarathi R a écrit :
> > I understand that two WebRTC endpoint are behind firewall scenario
> wherein
> > TURN server is unavoidable. Most of the SP & Enterprise deployment
> wherein
> > one of the endpoint is not surely going to be behind UDP blocking
> Firewall,
> > mandating TURN server as a mechanism is overkill. As ICE is mandated
> in
> > WebRTC, supporting ICE-TCP should not be such a complex activity.
> 
> A firewall that blocks UDP but allows incoming TCP is not very common,
> is it?
> 
> Or did I miss something?
> 
> Simon
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