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Re: [rtcweb] draft-ietf-rtcweb-transports

Justin Uberti <juberti@google.com> Wed, 22 October 2014 20:36 UTC

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From: Justin Uberti <juberti@google.com>
Date: Wed, 22 Oct 2014 13:36:05 -0700
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To: Harald Alvestrand <harald@alvestrand.no>
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Subject: Re: [rtcweb] draft-ietf-rtcweb-transports
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yes, they need to happen. Framing is 4571. See
http://tools.ietf.org/html/rfc6544#section-7.1.

On Wed, Oct 22, 2014 at 7:52 AM, Harald Alvestrand <harald@alvestrand.no>
wrote:

>  On 08/25/2014 07:36 AM, Justin Uberti wrote:
>
> Yes, 4571 must be used for ICE connectivity checks, when using ICE-TCP.
>
>  However, TURN/TCP has its own framing for STUN messages.
>
>  I would simplify your sentence to:
>
>     If ICE-TCP connections are used, framing according to [RFC4571] MUST
>    be used for all packets, unless the content has its own framing
> mechanism.
>
>
> Checking the list for long-delayed updates....
>
> Checking back: The change from TCP to ICE-TCP is good (this excludes
> TURN-TCP from this paragraph), but the exchange leaves me uncertain about
> the status of STUN packets on ICE-TCP connections.
>
> Do they happen at all? If they happen, should they be RFC 4571
> encapsulated, or not?
>
>
>
>
> On Fri, Aug 22, 2014 at 8:38 AM, Iñaki Baz Castillo <ibc@aliax.net> wrote:
>
>> Hi,
>>
>> draft-ietf-rtcweb-transports-06 says:
>>
>>    If TCP connections are used, RTP framing according to [RFC4571] MUST
>>    be used, both for the RTP packets and for the DTLS packets used to
>>    carry data channels.
>>
>>
>> Not just RTP and DTLS, but also for STUN packets must be framed with
>> RFC4571. And I do not understand why "DTLS packets used to carry data
>> channels". In fact all the DTLS packets (also the ones for the
>> handshake) must be framed as per RFC 4571.
>>
>>
>> So I suggest to improve the above text as follows:
>>
>>    If TCP connections are used, RTP framing according to [RFC4571] MUST
>>    be used for the STUN packets, SRTP packets, SRTCP packets and DTLS
>>    packets.
>>
>>
>>
>>
>>
>>
>> --
>> Iñaki Baz Castillo
>> <ibc@aliax.net>
>>
>> _______________________________________________
>> rtcweb mailing list
>> rtcweb@ietf.org
>> https://www.ietf.org/mailman/listinfo/rtcweb
>>
>
>
>
> _______________________________________________
> rtcweb mailing listrtcweb@ietf.orghttps://www.ietf.org/mailman/listinfo/rtcweb
>
>
>
> --
> Surveillance is pervasive. Go Dark.
>
>
> _______________________________________________
> rtcweb mailing list
> rtcweb@ietf.org
> https://www.ietf.org/mailman/listinfo/rtcweb
>
>

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